import static android.telephony.TelephonyManager.PHONE_TYPE_CDMA;
+import android.annotation.Nullable;
import android.annotation.StringDef;
-import android.app.PendingIntent;
import android.content.res.Resources;
import android.os.Binder;
import android.text.TextUtils;
/**
* Returns the originating address (sender) of this SMS message in String
- * form or null if unavailable
+ * form or null if unavailable.
+ *
+ * <p>If the address is a GSM-formatted address, it will be in a format specified by 3GPP
+ * 23.040 Sec 9.1.2.5. If it is a CDMA address, it will be a format specified by 3GPP2
+ * C.S005-D Table 2.7.1.3.2.4-2. The choice of format is carrier-specific, so callers of the
+ * should be careful to avoid assumptions about the returned content.
+ *
+ * @return a String representation of the address; null if unavailable.
*/
+ @Nullable
public String getOriginatingAddress() {
return mWrappedSmsMessage.getOriginatingAddress();
}