add missing annotation for TelephonyManager APIs

Bug: 126702627
Test: Build
Change-Id: I39cb57db7cc1105bf74eb18ecf15ddbdc6e44f0c

3 files changed, 10 insertions, 5 deletions

diff --git a/api/current.txt b/api/current.txt
index 21c29999faa6..0b4bc44576b8 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -45148,8 +45148,8 @@ package android.telephony {
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getImei();
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getImei(int);
     method @RequiresPermission(anyOf={android.Manifest.permission.READ_PHONE_STATE, android.Manifest.permission.READ_SMS, android.Manifest.permission.READ_PHONE_NUMBERS}) public String getLine1Number();
-    method public String getManufacturerCode();
-    method public String getManufacturerCode(int);
+    method @Nullable public String getManufacturerCode();
+    method @Nullable public String getManufacturerCode(int);
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getMeid();
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getMeid(int);
     method public String getMmsUAProfUrl();
@@ -45176,8 +45176,8 @@ package android.telephony {
     method public int getSimState();
     method public int getSimState(int);
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getSubscriberId();
-    method public String getTypeAllocationCode();
-    method public String getTypeAllocationCode(int);
+    method @Nullable public String getTypeAllocationCode();
+    method @Nullable public String getTypeAllocationCode(int);
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") @NonNull public java.util.List<android.telephony.UiccCardInfo> getUiccCardsInfo();
     method @Nullable @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public String getVisualVoicemailPackageName();
     method @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public String getVoiceMailAlphaTag();
diff --git a/api/system-current.txt b/api/system-current.txt
index 375ce911cec0..276befc700b9 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -7949,7 +7949,7 @@ package android.telephony {
     method @Deprecated public boolean getDataEnabled(int);
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public boolean getEmergencyCallbackMode();
     method @Nullable @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getIsimDomain();
-    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getIsimIst();
+    method @Nullable @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getIsimIst();
     method @NonNull @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public java.util.List<android.util.Pair<java.lang.Integer,java.lang.Integer>> getLogicalToPhysicalSlotMapping();
     method public static long getMaxNumberVerificationTimeoutMillis();
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public long getPreferredNetworkTypeBitmap();
diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index cf2b1ea1cda8..bce6f17ebde0 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -1566,6 +1566,7 @@ public class TelephonyManager {
      * Returns the Type Allocation Code from the IMEI. Return null if Type Allocation Code is not
      * available.
      */
+    @Nullable
     public String getTypeAllocationCode() {
         return getTypeAllocationCode(getSlotIndex());
     }
@@ -1576,6 +1577,7 @@ public class TelephonyManager {
      *
      * @param slotIndex of which Type Allocation Code is returned
      */
+    @Nullable
     public String getTypeAllocationCode(int slotIndex) {
         ITelephony telephony = getITelephony();
         if (telephony == null) return null;
@@ -1636,6 +1638,7 @@ public class TelephonyManager {
      * Returns the Manufacturer Code from the MEID. Return null if Manufacturer Code is not
      * available.
      */
+    @Nullable
     public String getManufacturerCode() {
         return getManufacturerCode(getSlotIndex());
     }
@@ -1646,6 +1649,7 @@ public class TelephonyManager {
      *
      * @param slotIndex of which Type Allocation Code is returned
      */
+    @Nullable
     public String getManufacturerCode(int slotIndex) {
         ITelephony telephony = getITelephony();
         if (telephony == null) return null;
@@ -6005,6 +6009,7 @@ public class TelephonyManager {
      * @return IMS Service Table or null if not present or not loaded
      * @hide
      */
+    @Nullable
     @SystemApi
     @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
     public String getIsimIst() {