diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 6c45233d26b7f..3b15f1c2ebfeb 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -1173,6 +1173,9 @@ public class CarrierConfigManager {
      * and {@code NEW_CODE} is the new {@code ImsReasonInfo#CODE_*} which this combination of
      * original code and message shall be remapped to.
      *
+     * Note: If {@code *} is specified for the original code, any ImsReasonInfo with the matching
+     * {@code MESSAGE} will be remapped to {@code NEW_CODE}.
+     *
      * Example: "501|call completion elsewhere|1014"
      * When the {@link ImsReasonInfo#getCode()} is {@link ImsReasonInfo#CODE_USER_TERMINATED} and
      * the {@link ImsReasonInfo#getExtraMessage()} is {@code "call completion elsewhere"},
diff --git a/telephony/java/android/telephony/DisconnectCause.java b/telephony/java/android/telephony/DisconnectCause.java
index 10cb7c95e85b7..e53e2460cdcbe 100644
--- a/telephony/java/android/telephony/DisconnectCause.java
+++ b/telephony/java/android/telephony/DisconnectCause.java
@@ -246,23 +246,18 @@ public class DisconnectCause {
      */
     public static final int IMEI_NOT_ACCEPTED = 58;
 
+    /**
+     * A call over WIFI was disconnected because the WIFI signal was lost or became too degraded to
+     * continue the call.
+     */
+    public static final int WIFI_LOST = 59;
+
     //*********************************************************************************************
     // When adding a disconnect type:
-    // 1) Please assign the new type the next id value below.
-    // 2) Increment the next id value below to a new value.
-    // 3) Update MAXIMUM_VALID_VALUE to the new disconnect type.
-    // 4) Update toString() with the newly added disconnect type.
-    // 5) Update android.telecom.DisconnectCauseUtil with any mappings to a telecom.DisconnectCause.
-    //
-    // NextId: 59
+    // 1) Update toString() with the newly added disconnect type.
+    // 2) Update android.telecom.DisconnectCauseUtil with any mappings to a telecom.DisconnectCause.
     //*********************************************************************************************
 
-    /** Smallest valid value for call disconnect codes. */
-    public static final int MINIMUM_VALID_VALUE = NOT_DISCONNECTED;
-
-    /** Largest valid value for call disconnect codes. */
-    public static final int MAXIMUM_VALID_VALUE = IMEI_NOT_ACCEPTED;
-
     /** Private constructor to avoid class instantiation. */
     private DisconnectCause() {
         // Do nothing.
@@ -387,6 +382,8 @@ public class DisconnectCause {
             return "DIALED_CALL_FORWARDING_WHILE_ROAMING";
         case IMEI_NOT_ACCEPTED:
             return "IMEI_NOT_ACCEPTED";
+        case WIFI_LOST:
+            return "WIFI_LOST";
         default:
             return "INVALID: " + cause;
         }
diff --git a/telephony/java/com/android/ims/ImsReasonInfo.java b/telephony/java/com/android/ims/ImsReasonInfo.java
index 56b882221cd7c..c71808c59830e 100644
--- a/telephony/java/com/android/ims/ImsReasonInfo.java
+++ b/telephony/java/com/android/ims/ImsReasonInfo.java
@@ -307,6 +307,11 @@ public class ImsReasonInfo implements Parcelable {
      */
     public static final int CODE_DATA_DISABLED = 1406;
 
+    /**
+     * Indicates a call was disconnected due to loss of wifi signal.
+     */
+    public static final int CODE_WIFI_LOST = 1407;
+
     /**
      * Network string error messages.
      * mExtraMessage may have these values.