Additional changes to SubscriptionManager API as per API council.

bug: 17575308
Change-Id: Idd98aa46c15a9219ccf28091c62602ac8bf16c62

8 files changed, 365 insertions, 302 deletions

diff --git a/telephony/java/android/telephony/PhoneStateListener.java b/telephony/java/android/telephony/PhoneStateListener.java
index 2f1a8da..8f4a92b 100644
--- a/telephony/java/android/telephony/PhoneStateListener.java
+++ b/telephony/java/android/telephony/PhoneStateListener.java
@@ -227,7 +227,7 @@ public class PhoneStateListener {
      * @hide
      */
     /** @hide */
-    protected int mSubId = SubscriptionManager.INVALID_SUB_ID;
+    protected int mSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID;
 
     private final Handler mHandler;
 
@@ -237,7 +237,7 @@ public class PhoneStateListener {
      * own non-null looper use PhoneStateListener(Looper looper) below.
      */
     public PhoneStateListener() {
-        this(SubscriptionManager.DEFAULT_SUB_ID, Looper.myLooper());
+        this(SubscriptionManager.DEFAULT_SUBSCRIPTION_ID, Looper.myLooper());
     }
 
     /**
@@ -246,7 +246,7 @@ public class PhoneStateListener {
      * @hide
      */
     public PhoneStateListener(Looper looper) {
-        this(SubscriptionManager.DEFAULT_SUB_ID, looper);
+        this(SubscriptionManager.DEFAULT_SUBSCRIPTION_ID, looper);
     }
 
     /**
diff --git a/telephony/java/android/telephony/SubscriptionInfo.java b/telephony/java/android/telephony/SubscriptionInfo.java
index a3ace36..c8b782f 100644
--- a/telephony/java/android/telephony/SubscriptionInfo.java
+++ b/telephony/java/android/telephony/SubscriptionInfo.java
@@ -102,11 +102,16 @@ public class SubscriptionInfo implements Parcelable {
     private int mMnc;
 
     /**
+     * ISO Country code for the subscription's provider
+     */
+    private String mCountryIso;
+
+    /**
      * @hide
      */
     public SubscriptionInfo(int id, String iccId, int simSlotIndex, CharSequence displayName,
             CharSequence carrierName, int nameSource, int iconTint, String number, int roaming,
-            Bitmap icon, int mcc, int mnc) {
+            Bitmap icon, int mcc, int mnc, String countryIso) {
         this.mId = id;
         this.mIccId = iccId;
         this.mSimSlotIndex = simSlotIndex;
@@ -119,6 +124,7 @@ public class SubscriptionInfo implements Parcelable {
         this.mIconBitmap = icon;
         this.mMcc = mcc;
         this.mMnc = mnc;
+        this.mCountryIso = countryIso;
     }
 
     /**
@@ -159,7 +165,6 @@ public class SubscriptionInfo implements Parcelable {
 
     /**
      * Returns the name displayed to the user that identifies Subscription provider name
-     * @hide
      */
     public CharSequence getCarrierName() {
         return this.mCarrierName;
@@ -265,6 +270,13 @@ public class SubscriptionInfo implements Parcelable {
         return this.mMnc;
     }
 
+    /**
+     * Returns the ISO country code
+     */
+    public String getCountryIso() {
+        return this.mCountryIso;
+    }
+
     public static final Parcelable.Creator<SubscriptionInfo> CREATOR = new Parcelable.Creator<SubscriptionInfo>() {
         @Override
         public SubscriptionInfo createFromParcel(Parcel source) {
@@ -279,10 +291,11 @@ public class SubscriptionInfo implements Parcelable {
             int dataRoaming = source.readInt();
             int mcc = source.readInt();
             int mnc = source.readInt();
+            String countryIso = source.readString();
             Bitmap iconBitmap = Bitmap.CREATOR.createFromParcel(source);
 
-            return new SubscriptionInfo(id, iccId, simSlotIndex, displayName, carrierName, nameSource,
-                    iconTint, number, dataRoaming, iconBitmap, mcc, mnc);
+            return new SubscriptionInfo(id, iccId, simSlotIndex, displayName, carrierName,
+                    nameSource, iconTint, number, dataRoaming, iconBitmap, mcc, mnc, countryIso);
         }
 
         @Override
@@ -304,6 +317,7 @@ public class SubscriptionInfo implements Parcelable {
         dest.writeInt(mDataRoaming);
         dest.writeInt(mMcc);
         dest.writeInt(mMnc);
+        dest.writeString(mCountryIso);
         mIconBitmap.writeToParcel(dest, flags);
     }
 
diff --git a/telephony/java/android/telephony/SubscriptionListener.java b/telephony/java/android/telephony/SubscriptionListener.java
deleted file mode 100644
index 5c65333..0000000
--- a/telephony/java/android/telephony/SubscriptionListener.java
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.telephony;
-
-import com.android.internal.telephony.ISub;
-import com.android.internal.telephony.ISubscriptionListener;
-
-import android.os.Bundle;
-import android.os.Handler;
-import android.os.IBinder;
-import android.os.Looper;
-import android.os.Message;
-import android.os.RemoteException;
-import android.os.ServiceManager;
-import android.telephony.Rlog;
-
-import java.util.List;
-
-/**
- * A listener class for monitoring changes to Subscription state
- * changes on the device.
- * <p>
- * Override the onXxxx methods in this class and passing to the listen method
- * bitwise-or of the corresponding LISTEN_Xxxx bit flags below.
- * <p>
- * Note that access to some of the information is permission-protected. Your
- * application won't receive updates for protected information unless it has
- * the appropriate permissions declared in its manifest file. Where permissions
- * apply, they are noted in the appropriate LISTEN_ flags.
- */
-public class SubscriptionListener {
-    private static final String LOG_TAG = "SubscriptionListener";
-    private static final boolean DBG = false; // STOPSHIP if true
-
-    /**
-     * Permission for LISTEN_SUBSCRIPTION_INFO_LIST_CHANGED
-     *
-     * @hide
-     */
-    public static final String PERMISSION_LISTEN_SUBSCRIPTION_INFO_LIST_CHANGED =
-            android.Manifest.permission.READ_PHONE_STATE;
-
-    /**
-     *  Listen for changes to the SubscriptionInoList when listening for this event
-     *  it is guaranteed that on #onSubscriptionInfoChanged will be invoked. This initial
-     *  invocation should be used to call SubscriptionManager.getActiveSubscriptionInfoList()
-     *  to get the initial list.
-     *
-     *  Permissions: android.Manifest.permission.READ_PHONE_STATE
-     *  @see #onSubscriptionInfoChanged
-     */
-    public static final int LISTEN_SUBSCRIPTION_INFO_LIST_CHANGED = 0x00000001;
-
-    private final Handler mHandler;
-
-    /**
-     * Create a SubscriptionLitener for the device.
-     *
-     * This class requires Looper.myLooper() not return null. To supply your
-     * own non-null looper use PhoneStateListener(Looper looper) below.
-     */
-    public SubscriptionListener() {
-        this(Looper.myLooper());
-    }
-
-    /**
-     * Create a PhoneStateListener for the Phone using the specified subscription
-     * and non-null Looper.
-     */
-    public SubscriptionListener(Looper looper) {
-        if (DBG) log("ctor:  looper=" + looper);
-
-        ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
-        mHandler = new Handler(looper) {
-            @Override
-            public void handleMessage(Message msg) {
-                if (DBG) {
-                    log("what=0x" + Integer.toHexString(msg.what) + " msg=" + msg);
-                }
-                switch (msg.what) {
-                    case LISTEN_SUBSCRIPTION_INFO_LIST_CHANGED:
-                        SubscriptionListener.this.onSubscriptionInfoChanged();
-                        break;
-                }
-            }
-        };
-    }
-
-    /**
-     * Callback invoked when there is any change to any SubscriptionInfo.
-     */
-    public void onSubscriptionInfoChanged() {
-        // default implementation empty
-    }
-
-    /**
-     * The callback methods need to be called on the handler thread where
-     * this object was created.  If the binder did that for us it'd be nice.
-     */
-    ISubscriptionListener callback = new ISubscriptionListener.Stub() {
-        @Override
-        public void onSubscriptionInfoChanged() {
-            Message msg = Message.obtain(mHandler, LISTEN_SUBSCRIPTION_INFO_LIST_CHANGED);
-            msg.sendToTarget();
-        }
-    };
-
-    private void log(String s) {
-        Rlog.d(LOG_TAG, s);
-    }
-}
diff --git a/telephony/java/android/telephony/SubscriptionManager.java b/telephony/java/android/telephony/SubscriptionManager.java
index 78ab6870..40d2e77 100644
--- a/telephony/java/android/telephony/SubscriptionManager.java
+++ b/telephony/java/android/telephony/SubscriptionManager.java
@@ -21,14 +21,17 @@ import android.annotation.SdkConstant.SdkConstantType;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
-import android.provider.BaseColumns;
 import android.telephony.Rlog;
+import android.os.Handler;
+import android.os.Message;
 import android.os.ServiceManager;
 import android.os.RemoteException;
 
 import com.android.internal.telephony.ISub;
+import com.android.internal.telephony.IOnSubscriptionsChangedListener;
 import com.android.internal.telephony.ITelephonyRegistry;
 import com.android.internal.telephony.PhoneConstants;
+import com.android.internal.telephony.TelephonyProperties;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -36,62 +39,79 @@ import java.util.List;
 /**
  * SubscriptionManager is the application interface to SubscriptionController
  * and provides information about the current Telephony Subscriptions.
- *
- * The android.Manifest.permission.READ_PHONE_STATE to retrieve the information, except
- * getActiveSubIdList and getActiveSubIdCount for which no permission is needed.
+ * * <p>
+ * You do not instantiate this class directly; instead, you retrieve
+ * a reference to an instance through {@link #from}.
+ * <p>
+ * All SDK public methods require android.Manifest.permission.READ_PHONE_STATE.
  */
-public class SubscriptionManager implements BaseColumns {
-    private static final String LOG_TAG = "SUB";
-    private static final boolean DBG = true;
+public class SubscriptionManager {
+    private static final String LOG_TAG = "SubscriptionManager";
+    private static final boolean DBG = false;
     private static final boolean VDBG = false;
 
     /** An invalid subscription identifier */
-    public static final int INVALID_SUB_ID = -1000;
+    public static final int INVALID_SUBSCRIPTION_ID = -1;
+
+    /** Base value for Dummy SUBSCRIPTION_ID's. */
+    /** FIXME: Remove DummySubId's, but for now have them map just below INVALID_SUBSCRIPTION_ID
+    /** @hide */
+    public static final int DUMMY_SUBSCRIPTION_ID_BASE = INVALID_SUBSCRIPTION_ID - 1;
 
     /** An invalid phone identifier */
     /** @hide */
-    public static final int INVALID_PHONE_ID = -1;
+    public static final int INVALID_PHONE_INDEX = -1;
 
     /** An invalid slot identifier */
     /** @hide */
-    public static final int INVALID_SLOT_ID = -1;
+    public static final int INVALID_SIM_SLOT_INDEX = -1;
 
     /** Indicates the caller wants the default sub id. */
     /** @hide */
-    public static final int DEFAULT_SUB_ID = Integer.MAX_VALUE;
+    public static final int DEFAULT_SUBSCRIPTION_ID = Integer.MAX_VALUE;
 
-    /** Indicates the caller wants the default phone id. */
-    /** @hide */
-    public static final int DEFAULT_PHONE_ID = Integer.MAX_VALUE;
+    /**
+     * Indicates the caller wants the default phone id.
+     * Used in SubscriptionController and PhoneBase but do we really need it???
+     * @hide
+     */
+    public static final int DEFAULT_PHONE_INDEX = Integer.MAX_VALUE;
 
-    /** Indicates the caller wants the default slot id. */
+    /** Indicates the caller wants the default slot id. NOT used remove? */
     /** @hide */
-    public static final int DEFAULT_SLOT_ID = Integer.MAX_VALUE;
+    public static final int DEFAULT_SIM_SLOT_INDEX = Integer.MAX_VALUE;
 
     /** Minimum possible subid that represents a subscription */
     /** @hide */
-    public static final int MIN_SUB_ID_VALUE = 0;
+    public static final int MIN_SUBSCRIPTION_ID_VALUE = 0;
 
     /** Maximum possible subid that represents a subscription */
     /** @hide */
-    public static final int MAX_SUB_ID_VALUE = DEFAULT_SUB_ID - 1;
-
+    public static final int MAX_SUBSCRIPTION_ID_VALUE = DEFAULT_SUBSCRIPTION_ID - 1;
 
     /** @hide */
     public static final Uri CONTENT_URI = Uri.parse("content://telephony/siminfo");
 
     /**
-     * The ICC ID of a SIM.
+     * TelephonyProvider unique key column name is the subscription id.
+     * <P>Type: TEXT (String)</P>
+     */
+    /** @hide */
+    public static final String UNIQUE_KEY_SUBSCRIPTION_ID = "_id";
+
+    /**
+     * TelephonyProvider column name for SIM ICC Identifier
      * <P>Type: TEXT (String)</P>
      */
     /** @hide */
     public static final String ICC_ID = "icc_id";
 
     /**
+     * TelephonyProvider column name for user SIM_SlOT_INDEX
      * <P>Type: INTEGER (int)</P>
      */
     /** @hide */
-    public static final String SIM_ID = "sim_id";
+    public static final String SIM_SLOT_INDEX = "sim_id";
 
     /** SIM is not inserted */
     /** @hide */
@@ -230,39 +250,107 @@ public class SubscriptionManager implements BaseColumns {
     /**
      * Broadcast Action: The user has changed one of the default subs related to
      * data, phone calls, or sms</p>
+     *
+     * TODO: Change to a listener
      * @hide
      */
     @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
     public static final String SUB_DEFAULT_CHANGED_ACTION =
         "android.intent.action.SUB_DEFAULT_CHANGED";
 
+    private final Context mContext;
+
+    /**
+     * A listener class for monitoring changes to {@link SubscriptionInfo} records.
+     * <p>
+     * Override the onSubscriptionsChanged method in the object that extends this
+     * class and pass it to {@link #registerOnSubscriptionsChangedListener(OnSubscriptionsChangedListener)}
+     * to register your listener and to unregister invoke
+     * {@link #unregisterOnSubscriptionsChangedListener(OnSubscriptionsChangedListener)}
+     * <p>
+     * Permissions android.Manifest.permission.READ_PHONE_STATE is required
+     * for #onSubscriptionsChanged to be invoked.
+     */
+    public static class OnSubscriptionsChangedListener {
+        /** @hide */
+        public static final String PERMISSION_ON_SUBSCRIPTIONS_CHANGED =
+                android.Manifest.permission.READ_PHONE_STATE;
+
+        private final Handler mHandler  = new Handler() {
+            @Override
+            public void handleMessage(Message msg) {
+                if (DBG) {
+                    log("handleMessage: invoke the overriden onSubscriptionsChanged()");
+                }
+                OnSubscriptionsChangedListener.this.onSubscriptionsChanged();
+            }
+        };
+
+        /**
+         * Callback invoked when there is any change to any SubscriptionInfo. Typically
+         * this method would invoke {@link #getActiveSubscriptionInfoList}
+         */
+        public void onSubscriptionsChanged() {
+            if (DBG) log("onSubscriptionsChanged: NOT OVERRIDDEN");
+        }
+
+        /**
+         * The callback methods need to be called on the handler thread where
+         * this object was created.  If the binder did that for us it'd be nice.
+         */
+        IOnSubscriptionsChangedListener callback = new IOnSubscriptionsChangedListener.Stub() {
+            @Override
+            public void onSubscriptionsChanged() {
+                if (DBG) log("callback: received, sendEmptyMessage(0) to handler");
+                mHandler.sendEmptyMessage(0);
+            }
+        };
+
+        private void log(String s) {
+            Rlog.d(LOG_TAG, s);
+        }
+    }
+
     /** @hide */
-    public SubscriptionManager() {
+    public SubscriptionManager(Context context) {
         if (DBG) logd("SubscriptionManager created");
+        mContext = context;
+    }
+
+    /**
+     * Get an instance of the SubscriptionManager from the Context.
+     * This invokes {@link android.content.Context#getSystemService
+     * Context.getSystemService(Context.TELEPHONY_SUBSCRIPTION_SERVICE)}.
+     *
+     * @param context to use.
+     * @return SubscriptionManager instance
+     */
+    public static SubscriptionManager from(Context context) {
+        return (SubscriptionManager) context.getSystemService(
+                Context.TELEPHONY_SUBSCRIPTION_SERVICE);
     }
 
     /**
-     * Register for changes to events defined by SubscriptionListener.LISTEN_Xxx. Some of
-     * the events will fire as registration completes, this could be before or after
-     * this method returns.
+     * Register for changes to the list of active {@link SubscriptionInfo} records or to the
+     * individual records themselves. When a change occurs the onSubscriptionsChanged method of
+     * the listener will be invoked immediately if there has been a notification.
      *
-     * @param listener an instance of SubscriptionListner with overridden methods the
-     *                 overridden method should match the bits defined in events.
-     * @param events is one or more of the SubscriptionListener.LISTEN_Xxx bits
+     * @param listener an instance of {@link OnSubscriptionsChangedListener} with
+     *                 onSubscriptionsChanged overridden.
      */
-    public static void register(Context context, SubscriptionListener listener, int events) {
-        String pkgForDebug = context != null ? context.getPackageName() : "<unknown>";
+    public void registerOnSubscriptionsChangedListener(OnSubscriptionsChangedListener listener) {
+        String pkgForDebug = mContext != null ? mContext.getPackageName() : "<unknown>";
         if (DBG) {
-            logd("SubscriptionManager listen pkgForDebug=" + pkgForDebug
-                    + " events=0x" + Integer.toHexString(events) + " listener=" + listener);
+            logd("register OnSubscriptionsChangedListener pkgForDebug=" + pkgForDebug
+                    + " listener=" + listener);
         }
         try {
-            // We use the TelephonyRegistry as its runs in the system and thus is always
-            // available where as SubscriptionController could crash and not be available
+            // We use the TelephonyRegistry as it runs in the system and thus is always
+            // available. Where as SubscriptionController could crash and not be available
             ITelephonyRegistry tr = ITelephonyRegistry.Stub.asInterface(ServiceManager.getService(
                     "telephony.registry"));
             if (tr != null) {
-                tr.registerSubscriptionListener(pkgForDebug, listener.callback, events);
+                tr.registerOnSubscriptionsChangedListener(pkgForDebug, listener.callback);
             }
         } catch (RemoteException ex) {
             // Should not happen
@@ -270,15 +358,16 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /**
-     * Unregister the listener.
+     * Unregister the {@link OnSubscriptionsChangedListener}. This is not strictly necessary
+     * as the listener will automatically be unregistered if an attempt to invoke the listener
+     * fails.
      *
-     * @param context
-     * @param listener
+     * @param listener that is to be unregistered.
      */
-    public static void unregister(Context context, SubscriptionListener listener) {
-        String pkgForDebug = context != null ? context.getPackageName() : "<unknown>";
+    public void unregisterOnSubscriptionsChangedListener(OnSubscriptionsChangedListener listener) {
+        String pkgForDebug = mContext != null ? mContext.getPackageName() : "<unknown>";
         if (DBG) {
-            logd("SubscriptionManager unregister pkgForDebug=" + pkgForDebug
+            logd("unregister OnSubscriptionsChangedListener pkgForDebug=" + pkgForDebug
                     + " listener=" + listener);
         }
         try {
@@ -287,7 +376,7 @@ public class SubscriptionManager implements BaseColumns {
             ITelephonyRegistry tr = ITelephonyRegistry.Stub.asInterface(ServiceManager.getService(
                     "telephony.registry"));
             if (tr != null) {
-                tr.unregisterSubscriptionListener(pkgForDebug, listener.callback);
+                tr.unregisterOnSubscriptionsChangedListener(pkgForDebug, listener.callback);
             }
         } catch (RemoteException ex) {
             // Should not happen
@@ -295,13 +384,14 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /**
-     * Get the SubscriptionInfo associated with the subId
-     * @param subId The unique SubscriptionInfo index in database
-     * @return SubscriptionInfo, maybe null
+     * Get the active SubscriptionInfo with the subId key
+     * @param subId The unique SubscriptionInfo key in database
+     * @return SubscriptionInfo, maybe null if its not active.
      */
-    public static SubscriptionInfo getSubscriptionInfoForSubscriber(int subId) {
+    public SubscriptionInfo getActiveSubscriptionInfo(int subId) {
+        if (VDBG) logd("[getActiveSubscriptionInfo]+ subId=" + subId);
         if (!isValidSubId(subId)) {
-            logd("[getSubscriptionInfoForSubscriber]- invalid subId");
+            logd("[getActiveSubscriptionInfo]- invalid subId");
             return null;
         }
 
@@ -310,7 +400,7 @@ public class SubscriptionManager implements BaseColumns {
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
             if (iSub != null) {
-                subInfo = iSub.getSubInfoForSubscriber(subId);
+                subInfo = iSub.getActiveSubscriptionInfo(subId);
             }
         } catch (RemoteException ex) {
             // ignore it
@@ -321,73 +411,64 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /**
-     * Get the SubscriptionInfo according to an IccId
+     * Get the active SubscriptionInfo associated with the iccId
      * @param iccId the IccId of SIM card
-     * @return SubscriptionInfo List, maybe empty but not null
+     * @return SubscriptionInfo, maybe null if its not active
      * @hide
      */
-    public static List<SubscriptionInfo> getSubscriptionInfoUsingIccId(String iccId) {
-        if (VDBG) logd("[getSubscriptionInfoUsingIccId]+ iccId=" + iccId);
+    public SubscriptionInfo getActiveSubscriptionInfoForIccIndex(String iccId) {
+        if (VDBG) logd("[getActiveSubscriptionInfoForIccIndex]+ iccId=" + iccId);
         if (iccId == null) {
-            logd("[getSubscriptionInfoUsingIccId]- null iccid");
+            logd("[getActiveSubscriptionInfoForIccIndex]- null iccid");
             return null;
         }
 
-        List<SubscriptionInfo> result = null;
+        SubscriptionInfo result = null;
 
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
             if (iSub != null) {
-                result = iSub.getSubInfoUsingIccId(iccId);
+                result = iSub.getActiveSubscriptionInfoForIccId(iccId);
             }
         } catch (RemoteException ex) {
             // ignore it
         }
 
-
-        if (result == null) {
-            result = new ArrayList<SubscriptionInfo>();
-        }
         return result;
     }
 
     /**
-     * Get the SubscriptionInfo according to slotId
-     * @param slotId the slot which the SIM is inserted
-     * @return SubscriptionInfo list, maybe empty but not null
+     * Get the active SubscriptionInfo associated with the slotIdx
+     * @param slotIdx the slot which the subscription is inserted
+     * @return SubscriptionInfo, maybe null if its not active
      */
-    public static List<SubscriptionInfo> getSubscriptionInfoUsingSlotId(int slotId) {
-        // FIXME: Consider never returning null
-        if (!isValidSlotId(slotId)) {
-            logd("[getSubscriptionInfoUsingSlotId]- invalid slotId");
+    public SubscriptionInfo getActiveSubscriptionInfoForSimSlotIndex(int slotIdx) {
+        if (VDBG) logd("[getActiveSubscriptionInfoForSimSlotIndex]+ slotIdx=" + slotIdx);
+        if (!isValidSlotId(slotIdx)) {
+            logd("[getActiveSubscriptionInfoForSimSlotIndex]- invalid slotIdx");
             return null;
         }
 
-        List<SubscriptionInfo> result = null;
+        SubscriptionInfo result = null;
 
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
             if (iSub != null) {
-                result = iSub.getSubInfoUsingSlotId(slotId);
+                result = iSub.getActiveSubscriptionInfoForSimSlotIndex(slotIdx);
             }
         } catch (RemoteException ex) {
             // ignore it
         }
 
-
-        if (result == null) {
-            result = new ArrayList<SubscriptionInfo>();
-        }
         return result;
     }
 
     /**
-     * Get all the SubscriptionInfo(s) in subInfo database
-     * @return List of all SubscriptionInfos in database, include those that were inserted before
-     * maybe empty but not null.
+     * @return List of all SubscriptionInfo records in database,
+     * include those that were inserted before, maybe empty but not null.
      * @hide
      */
-    public static List<SubscriptionInfo> getAllSubscriptionInfoList() {
+    public List<SubscriptionInfo> getAllSubscriptionInfoList() {
         if (VDBG) logd("[getAllSubscriptionInfoList]+");
 
         List<SubscriptionInfo> result = null;
@@ -408,33 +489,45 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /**
-     * Get the SubscriptionInfo(s) of the currently inserted SIM(s)
-     * @return Array list of currently inserted SubscriptionInfo(s) maybe empty but not null
+     * Get the SubscriptionInfo(s) of the currently inserted SIM(s). The records will be sorted
+     * by {@link SubscriptionInfo#getSimSlotIndex} then by {@link SubscriptionInfo#getSubscriptionId}.
+     *
+     * @return Sorted list of the currently {@link SubscriptionInfo} records available on the device.
+     * <ul>
+     * <li>
+     * If null is returned the current state is unknown but if a {@link OnSubscriptionsChangedListener}
+     * has been registered {@link OnSubscriptionsChangedListener#onSubscriptionsChanged} will be
+     * invoked in the future.
+     * </li>
+     * <li>
+     * If the list is empty then there are no {@link SubscriptionInfo} records currently available.
+     * </li>
+     * <li>
+     * if the list is non-empty the list is sorted by {@link SubscriptionInfo#getSimSlotIndex}
+     * then by {@link SubscriptionInfo#getSubscriptionId}.
+     * </li>
+     * </ul>
      */
-    public static List<SubscriptionInfo> getActiveSubscriptionInfoList() {
+    public List<SubscriptionInfo> getActiveSubscriptionInfoList() {
         List<SubscriptionInfo> result = null;
 
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
             if (iSub != null) {
-                result = iSub.getActiveSubInfoList();
+                result = iSub.getActiveSubscriptionInfoList();
             }
         } catch (RemoteException ex) {
             // ignore it
         }
-
-        if (result == null) {
-            result = new ArrayList<SubscriptionInfo>();
-        }
         return result;
     }
 
     /**
-     * Get the SUB count of all SUB(s) in subinfo database
-     * @return all SIM count in database, include what was inserted before
+     * @return the count of all subscriptions in the database, this includes
+     * all subscriptions that have been seen.
      * @hide
      */
-    public static int getAllSubscriptionInfoCount() {
+    public int getAllSubscriptionInfoCount() {
         if (VDBG) logd("[getAllSubscriptionInfoCount]+");
 
         int result = 0;
@@ -452,11 +545,11 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /**
-     * Get the count of active SUB(s)
-     * @return active SIM count
-     * @hide
+     * @return the current number of active subscriptions. There is no guarantee the value
+     * returned by this method will be the same as the length of the list returned by
+     * {@link #getActiveSubscriptionInfoList}.
      */
-    public static int getActiveSubscriptionInfoCount() {
+    public int getActiveSubscriptionInfoCount() {
         int result = 0;
 
         try {
@@ -472,13 +565,33 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /**
-     * Add a new SubscriptionInfo to subinfo database if needed
+     * @return the maximum number of active subscriptions that will be returned by
+     * {@link #getActiveSubscriptionInfoList} and the value returned by
+     * {@link #getActiveSubscriptionInfoCount}.
+     */
+    public int getActiveSubscriptionInfoCountMax() {
+        int result = 0;
+
+        try {
+            ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
+            if (iSub != null) {
+                result = iSub.getActiveSubInfoCountMax();
+            }
+        } catch (RemoteException ex) {
+            // ignore it
+        }
+
+        return result;
+    }
+
+    /**
+     * Add a new SubscriptionInfo to SubscriptionInfo database if needed
      * @param iccId the IccId of the SIM card
      * @param slotId the slot which the SIM is inserted
      * @return the URL of the newly created row or the updated row
      * @hide
      */
-    public static Uri addSubscriptionInfoRecord(String iccId, int slotId) {
+    public Uri addSubscriptionInfoRecord(String iccId, int slotId) {
         if (VDBG) logd("[addSubscriptionInfoRecord]+ iccId:" + iccId + " slotId:" + slotId);
         if (iccId == null) {
             logd("[addSubscriptionInfoRecord]- null iccId");
@@ -504,12 +617,12 @@ public class SubscriptionManager implements BaseColumns {
 
     /**
      * Set SIM icon tint color by simInfo index
-     * @param tint the rgb value of icon tint color of the SIM
+     * @param tint the RGB value of icon tint color of the SIM
      * @param subId the unique SubInfoRecord index in database
      * @return the number of records updated
      * @hide
      */
-    public static int setIconTint(int tint, int subId) {
+    public int setIconTint(int tint, int subId) {
         if (VDBG) logd("[setIconTint]+ tint:" + tint + " subId:" + subId);
         if (!isValidSubId(subId)) {
             logd("[setIconTint]- fail");
@@ -538,7 +651,7 @@ public class SubscriptionManager implements BaseColumns {
      * @return the number of records updated
      * @hide
      */
-    public static int setDisplayName(String displayName, int subId) {
+    public int setDisplayName(String displayName, int subId) {
         return setDisplayName(displayName, subId, NAME_SOURCE_UNDEFINDED);
     }
 
@@ -551,7 +664,7 @@ public class SubscriptionManager implements BaseColumns {
      * @return the number of records updated or -1 if invalid subId
      * @hide
      */
-    public static int setDisplayName(String displayName, int subId, long nameSource) {
+    public int setDisplayName(String displayName, int subId, long nameSource) {
         if (VDBG) {
             logd("[setDisplayName]+  displayName:" + displayName + " subId:" + subId
                     + " nameSource:" + nameSource);
@@ -583,7 +696,7 @@ public class SubscriptionManager implements BaseColumns {
      * @return the number of records updated
      * @hide
      */
-    public static int setDisplayNumber(String number, int subId) {
+    public int setDisplayNumber(String number, int subId) {
         if (number == null || !isValidSubId(subId)) {
             logd("[setDisplayNumber]- fail");
             return -1;
@@ -611,7 +724,7 @@ public class SubscriptionManager implements BaseColumns {
      * @return the number of records updated
      * @hide
      */
-    public static int setDataRoaming(int roaming, int subId) {
+    public int setDataRoaming(int roaming, int subId) {
         if (VDBG) logd("[setDataRoaming]+ roaming:" + roaming + " subId:" + subId);
         if (roaming < 0 || !isValidSubId(subId)) {
             logd("[setDataRoaming]- fail");
@@ -643,7 +756,7 @@ public class SubscriptionManager implements BaseColumns {
             logd("[getSlotId]- fail");
         }
 
-        int result = INVALID_SLOT_ID;
+        int result = INVALID_SIM_SLOT_INDEX;
 
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -683,10 +796,10 @@ public class SubscriptionManager implements BaseColumns {
     public static int getPhoneId(int subId) {
         if (!isValidSubId(subId)) {
             logd("[getPhoneId]- fail");
-            return INVALID_PHONE_ID;
+            return INVALID_PHONE_INDEX;
         }
 
-        int result = INVALID_PHONE_ID;
+        int result = INVALID_PHONE_INDEX;
 
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -703,7 +816,7 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     private static void logd(String msg) {
-        Rlog.d(LOG_TAG, "[SubManager] " + msg);
+        Rlog.d(LOG_TAG, msg);
     }
 
     /**
@@ -713,7 +826,7 @@ public class SubscriptionManager implements BaseColumns {
      * @hide
      */
     public static int getDefaultSubId() {
-        int subId = INVALID_SUB_ID;
+        int subId = INVALID_SUBSCRIPTION_ID;
 
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -730,7 +843,7 @@ public class SubscriptionManager implements BaseColumns {
 
     /** @hide */
     public static int getDefaultVoiceSubId() {
-        int subId = INVALID_SUB_ID;
+        int subId = INVALID_SUBSCRIPTION_ID;
 
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -746,7 +859,7 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /** @hide */
-    public static void setDefaultVoiceSubId(int subId) {
+    public void setDefaultVoiceSubId(int subId) {
         if (VDBG) logd("setDefaultVoiceSubId sub id = " + subId);
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -759,8 +872,8 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /** @hide */
-    public static SubscriptionInfo getDefaultVoiceSubscriptionInfo() {
-        return getSubscriptionInfoForSubscriber(getDefaultVoiceSubId());
+    public SubscriptionInfo getDefaultVoiceSubscriptionInfo() {
+        return getActiveSubscriptionInfo(getDefaultVoiceSubId());
     }
 
     /** @hide */
@@ -769,11 +882,13 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /**
-     * @return subId of the DefaultSms subscription or the value INVALID_SUB_ID if an error.
+     * @return subId of the DefaultSms subscription or
+     * the value INVALID_SUBSCRIPTION_ID if an error.
+     *
      * @hide
      */
     public static int getDefaultSmsSubId() {
-        int subId = INVALID_SUB_ID;
+        int subId = INVALID_SUBSCRIPTION_ID;
 
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -789,7 +904,7 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /** @hide */
-    public static void setDefaultSmsSubId(int subId) {
+    public void setDefaultSmsSubId(int subId) {
         if (VDBG) logd("setDefaultSmsSubId sub id = " + subId);
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -802,18 +917,18 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /** @hide */
-    public static SubscriptionInfo getDefaultSmsSubscriptionInfo() {
-        return getSubscriptionInfoForSubscriber(getDefaultSmsSubId());
+    public SubscriptionInfo getDefaultSmsSubscriptionInfo() {
+        return getActiveSubscriptionInfo(getDefaultSmsSubId());
     }
 
     /** @hide */
-    public static int getDefaultSmsPhoneId() {
+    public int getDefaultSmsPhoneId() {
         return getPhoneId(getDefaultSmsSubId());
     }
 
     /** @hide */
     public static int getDefaultDataSubId() {
-        int subId = INVALID_SUB_ID;
+        int subId = INVALID_SUBSCRIPTION_ID;
 
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -829,7 +944,7 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /** @hide */
-    public static void setDefaultDataSubId(int subId) {
+    public void setDefaultDataSubId(int subId) {
         if (VDBG) logd("setDataSubscription sub id = " + subId);
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -842,17 +957,17 @@ public class SubscriptionManager implements BaseColumns {
     }
 
     /** @hide */
-    public static SubscriptionInfo getDefaultDataSubscriptionInfo() {
-        return getSubscriptionInfoForSubscriber(getDefaultDataSubId());
+    public SubscriptionInfo getDefaultDataSubscriptionInfo() {
+        return getActiveSubscriptionInfo(getDefaultDataSubId());
     }
 
     /** @hide */
-    public static int getDefaultDataPhoneId() {
+    public int getDefaultDataPhoneId() {
         return getPhoneId(getDefaultDataSubId());
     }
 
     /** @hide */
-    public static void clearSubscriptionInfo() {
+    public void clearSubscriptionInfo() {
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
             if (iSub != null) {
@@ -867,14 +982,14 @@ public class SubscriptionManager implements BaseColumns {
 
     //FIXME this is vulnerable to race conditions
     /** @hide */
-    public static boolean allDefaultsSelected() {
-        if (getDefaultDataSubId() == INVALID_SUB_ID) {
+    public boolean allDefaultsSelected() {
+        if (getDefaultDataSubId() == INVALID_SUBSCRIPTION_ID) {
             return false;
         }
-        if (getDefaultSmsSubId() == INVALID_SUB_ID) {
+        if (getDefaultSmsSubId() == INVALID_SUBSCRIPTION_ID) {
             return false;
         }
-        if (getDefaultVoiceSubId() == INVALID_SUB_ID) {
+        if (getDefaultVoiceSubId() == INVALID_SUBSCRIPTION_ID) {
             return false;
         }
         return true;
@@ -882,10 +997,10 @@ public class SubscriptionManager implements BaseColumns {
 
     /**
      * If a default is set to subscription which is not active, this will reset that default back to
-     * INVALID_SUB_ID.
+     * INVALID_SUBSCRIPTION_ID.
      * @hide
      */
-    public static void clearDefaultsForInactiveSubIds() {
+    public void clearDefaultsForInactiveSubIds() {
         if (VDBG) logd("clearDefaultsForInactiveSubIds");
         try {
             ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
@@ -902,34 +1017,26 @@ public class SubscriptionManager implements BaseColumns {
      * @hide
      */
     public static boolean isValidSubId(int subId) {
-        return subId > INVALID_SUB_ID ;
+        return subId > INVALID_SUBSCRIPTION_ID ;
     }
 
     /**
      * @return true if subId is an usable subId value else false. A
-     * usable subId means its neither a INVALID_SUB_ID nor a DEFAUL_SUB_ID.
+     * usable subId means its neither a INVALID_SUBSCRIPTION_ID nor a DEFAUL_SUB_ID.
      * @hide
      */
     public static boolean isUsableSubIdValue(int subId) {
-        return subId >= MIN_SUB_ID_VALUE && subId <= MAX_SUB_ID_VALUE;
+        return subId >= MIN_SUBSCRIPTION_ID_VALUE && subId <= MAX_SUBSCRIPTION_ID_VALUE;
     }
 
     /** @hide */
     public static boolean isValidSlotId(int slotId) {
-        // We are testing INVALID_SLOT_ID and slotId >= 0 independently because we should
-        // not assume that INVALID_SLOT_ID will always be a negative value.  Any negative
-        // value is invalid.
-        return slotId != INVALID_SLOT_ID && slotId >= 0 &&
-                slotId < TelephonyManager.getDefault().getSimCount();
+        return slotId >= 0 && slotId < TelephonyManager.getDefault().getSimCount();
     }
 
     /** @hide */
     public static boolean isValidPhoneId(int phoneId) {
-        // We are testing INVALID_PHONE_ID and phoneId >= 0 independently because we should
-        // not assume that INVALID_PHONE_ID will always be a negative value.  Any negative
-        // value is invalid.
-        return phoneId != INVALID_PHONE_ID && phoneId >= 0 &&
-                phoneId < TelephonyManager.getDefault().getPhoneCount();
+        return phoneId >= 0 && phoneId < TelephonyManager.getDefault().getPhoneCount();
     }
 
     /** @hide */
@@ -957,7 +1064,7 @@ public class SubscriptionManager implements BaseColumns {
      *         is never null but the length maybe 0.
      * @hide
      */
-    public static int[] getActiveSubIdList() {
+    public int[] getActiveSubscriptionIdList() {
         int[] subId = null;
 
         try {
@@ -976,5 +1083,25 @@ public class SubscriptionManager implements BaseColumns {
         return subId;
 
     }
+
+    /**
+     * Returns true if the device is considered roaming on the current
+     * network for a subscription.
+     * <p>
+     * Availability: Only when user registered to a network.
+     *
+     * @param subId The subscription ID
+     * @return true if the network for the subscription is roaming, false otherwise
+     */
+    public boolean isNetworkRoaming(int subId) {
+        final int phoneId = getPhoneId(subId);
+        if (phoneId < 0) {
+            // What else can we do?
+            return false;
+        }
+        // FIXME: use better way to get roaming status instead of reading from system property
+        return Boolean.parseBoolean(TelephonyManager.getTelephonyProperty(phoneId,
+                TelephonyProperties.PROPERTY_OPERATOR_ISROAMING, null));
+    }
 }
 
diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index 7c03d42..40a8ed4 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -79,6 +79,7 @@ public class TelephonyManager {
     }
 
     private final Context mContext;
+    private SubscriptionManager mSubscriptionManager;
 
     private static String multiSimConfig =
             SystemProperties.get(TelephonyProperties.PROPERTY_MULTI_SIM_CONFIG);
@@ -104,6 +105,7 @@ public class TelephonyManager {
         } else {
             mContext = context;
         }
+        mSubscriptionManager = SubscriptionManager.from(mContext);
 
         if (sRegistry == null) {
             sRegistry = ITelephonyRegistry.Stub.asInterface(ServiceManager.getService(
@@ -157,6 +159,9 @@ public class TelephonyManager {
     public int getPhoneCount() {
         int phoneCount = 1;
         switch (getMultiSimConfiguration()) {
+            case UNKNOWN:
+                phoneCount = 1;
+                break;
             case DSDS:
             case DSDA:
                 phoneCount = PhoneConstants.MAX_PHONE_COUNT_DUAL_SIM;
@@ -1527,7 +1532,7 @@ public class TelephonyManager {
      * @see #getSimState
      */
     public String getSimOperator() {
-        int subId = SubscriptionManager.getDefaultDataSubId();
+        int subId = mSubscriptionManager.getDefaultDataSubId();
         if (!SubscriptionManager.isUsableSubIdValue(subId)) {
             subId = SubscriptionManager.getDefaultSmsSubId();
             if (!SubscriptionManager.isUsableSubIdValue(subId)) {
@@ -1989,7 +1994,7 @@ public class TelephonyManager {
      * <p>Requires that the calling app has carrier privileges.
      * @see #hasCarrierPrivileges
      *
-     * @param subId The subscriber id.
+     * @param subId The subscription id.
      * @param alphaTag The alpha tag to display.
      * @param number The voicemail number.
      */
@@ -2379,8 +2384,6 @@ public class TelephonyManager {
      * PackageManager.FEATURE_TELEPHONY system feature, which is available
      * on any device with a telephony radio, even if the device is
      * data-only.
-     *
-     * @hide pending API review
      */
     public boolean isVoiceCapable() {
         if (mContext == null) return true;
diff --git a/telephony/java/com/android/internal/telephony/IOnSubscriptionsChangedListener.aidl b/telephony/java/com/android/internal/telephony/IOnSubscriptionsChangedListener.aidl
new file mode 100644
index 0000000..493b1ff
--- /dev/null
+++ b/telephony/java/com/android/internal/telephony/IOnSubscriptionsChangedListener.aidl
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.internal.telephony;
+
+oneway interface IOnSubscriptionsChangedListener {
+    void onSubscriptionsChanged();
+}
+
diff --git a/telephony/java/com/android/internal/telephony/ISub.aidl b/telephony/java/com/android/internal/telephony/ISub.aidl
index d82c492..ca82083 100755
--- a/telephony/java/com/android/internal/telephony/ISub.aidl
+++ b/telephony/java/com/android/internal/telephony/ISub.aidl
@@ -22,51 +22,71 @@ import com.android.internal.telephony.ISubscriptionListener;
 
 interface ISub {
     /**
-     * Get the SubscriptionInfo according to an index
-     * @param subId The unique SubscriptionInfo index in database
-     * @return SubscriptionInfo, maybe null
+     * @return a list of all subscriptions in the database, this includes
+     * all subscriptions that have been seen.
      */
-    SubscriptionInfo getSubInfoForSubscriber(int subId);
+    List<SubscriptionInfo> getAllSubInfoList();
 
     /**
-     * Get the SubscriptionInfo according to an IccId
-     * @param iccId the IccId of SIM card
-     * @return SubscriptionInfo, maybe null
+     * @return the count of all subscriptions in the database, this includes
+     * all subscriptions that have been seen.
      */
-    List<SubscriptionInfo> getSubInfoUsingIccId(String iccId);
+    int getAllSubInfoCount();
 
     /**
-     * Get the SubscriptionInfo according to slotId
-     * @param slotId the slot which the SIM is inserted
-     * @return SubscriptionInfo, maybe null
+     * Get the active SubscriptionInfo with the subId key
+     * @param subId The unique SubscriptionInfo key in database
+     * @return SubscriptionInfo, maybe null if its not active
      */
-    List<SubscriptionInfo> getSubInfoUsingSlotId(int slotId);
+    SubscriptionInfo getActiveSubscriptionInfo(int subId);
 
     /**
-     * Get all the SubscriptionInfo(s) in subinfo database
-     * @return Array list of all SubInfoRecords in database, include thsoe that were inserted before
+     * Get the active SubscriptionInfo associated with the iccId
+     * @param iccId the IccId of SIM card
+     * @return SubscriptionInfo, maybe null if its not active
      */
-    List<SubscriptionInfo> getAllSubInfoList();
+    SubscriptionInfo getActiveSubscriptionInfoForIccId(String iccId);
 
     /**
-     * Get the SubscriptionInfo(s) of the currently inserted SIM(s)
-     * @return Array list of currently inserted SubscriptionInfo(s)
+     * Get the active SubscriptionInfo associated with the slotIdx
+     * @param slotIdx the slot which the subscription is inserted
+     * @return SubscriptionInfo, maybe null if its not active
      */
-    List<SubscriptionInfo> getActiveSubInfoList();
+    SubscriptionInfo getActiveSubscriptionInfoForSimSlotIndex(int slotIdx);
 
     /**
-     * Get the SUB count of all SUB(s) in subinfo database
-     * @return all SIM count in database, include what was inserted before
+     * Get the SubscriptionInfo(s) of the active subscriptions. The records will be sorted
+     * by {@link SubscriptionInfo#getSimSlotIndex} then by {@link SubscriptionInfo#getSubscriptionId}.
+     *
+     * @return Sorted list of the currently {@link SubscriptionInfo} records available on the device.
+     * <ul>
+     * <li>
+     * If null is returned the current state is unknown but if a {@link OnSubscriptionsChangedListener}
+     * has been registered {@link OnSubscriptionsChangedListener#onSubscriptionsChanged} will be
+     * invoked in the future.
+     * </li>
+     * <li>
+     * If the list is empty then there are no {@link SubscriptionInfo} records currently available.
+     * </li>
+     * <li>
+     * if the list is non-empty the list is sorted by {@link SubscriptionInfo#getSimSlotIndex}
+     * then by {@link SubscriptionInfo#getSubscriptionId}.
+     * </li>
+     * </ul>
      */
-    int getAllSubInfoCount();
+    List<SubscriptionInfo> getActiveSubscriptionInfoList();
 
     /**
-     * Get the count of active SUB(s)
-     * @return active SIM count
+     * @return the number of active subscriptions
      */
     int getActiveSubInfoCount();
 
     /**
+     * @return the maximum number of subscriptions this device will support at any one time.
+     */
+    int getActiveSubInfoCountMax();
+
+    /**
      * Add a new SubscriptionInfo to subinfo database if needed
      * @param iccId the IccId of the SIM card
      * @param slotId the slot which the SIM is inserted
diff --git a/telephony/java/com/android/internal/telephony/ITelephonyRegistry.aidl b/telephony/java/com/android/internal/telephony/ITelephonyRegistry.aidl
index 1a1f8fe..ba62f5f 100644
--- a/telephony/java/com/android/internal/telephony/ITelephonyRegistry.aidl
+++ b/telephony/java/com/android/internal/telephony/ITelephonyRegistry.aidl
@@ -27,11 +27,13 @@ import android.telephony.SignalStrength;
 import android.telephony.CellInfo;
 import android.telephony.VoLteServiceState;
 import com.android.internal.telephony.IPhoneStateListener;
-import com.android.internal.telephony.ISubscriptionListener;
+import com.android.internal.telephony.IOnSubscriptionsChangedListener;
 
 interface ITelephonyRegistry {
-    void registerSubscriptionListener(String pkg, ISubscriptionListener callback, int events);
-    void unregisterSubscriptionListener(String pkg, ISubscriptionListener callback);
+    void registerOnSubscriptionsChangedListener(String pkg,
+            IOnSubscriptionsChangedListener callback);
+    void unregisterOnSubscriptionsChangedListener(String pkg,
+            IOnSubscriptionsChangedListener callback);
     void listen(String pkg, IPhoneStateListener callback, int events, boolean notifyNow);
     void listenForSubscriber(in int subId, String pkg, IPhoneStateListener callback, int events,
             boolean notifyNow);