diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index 3207ca50e6c08..95f5d6c506f81 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -9880,6 +9880,10 @@ package android.telephony {
     field public static final int ROAMING_TYPE_UNKNOWN = 1; // 0x1
   }
 
+  public class SignalStrength implements android.os.Parcelable {
+    ctor public SignalStrength(@NonNull android.telephony.SignalStrength);
+  }
+
   public final class SmsCbCmasInfo implements android.os.Parcelable {
     ctor public SmsCbCmasInfo(int, int, int, int, int, int);
     method public int describeContents();
diff --git a/telephony/java/android/telephony/SignalStrength.java b/telephony/java/android/telephony/SignalStrength.java
index 1376cddbc41fb..4a0f0076f257c 100644
--- a/telephony/java/android/telephony/SignalStrength.java
+++ b/telephony/java/android/telephony/SignalStrength.java
@@ -18,6 +18,7 @@ package android.telephony;
 
 import android.annotation.ElapsedRealtimeLong;
 import android.annotation.NonNull;
+import android.annotation.SystemApi;
 import android.compat.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Bundle;
@@ -287,12 +288,12 @@ public class SignalStrength implements Parcelable {
     }
 
     /**
-     * Copy constructors
+     * This constructor is used to create a copy of an existing SignalStrength object.
      *
      * @param s Source SignalStrength
-     *
      * @hide
      */
+    @SystemApi
     public SignalStrength(@NonNull SignalStrength s) {
         copyFrom(s);
     }