Detect Signal Strength for Dual Sim

To find the Signal Strength, I made the following changes to my project. So I will raise the API request if the signal strength is good. If you are poor, we will inform the user about the Internet connection. But this code only works for single sim device, not dual sim and does not get "ASU" and "dBm" values ​​for secondary sim. Anyone knows how to determine the signal strength for dual sim.

My project minSdkVersion = 16 and targetSdkVersion = 23

Code for your links.

Mainactivity.java

Thread t1 = new Thread()
{
    public void run()
    {
        Intent service1 = new Intent(HomeScreen.this, SignalService.class);
        startService(service1);
    }
};

      

        
        
        
      

    

SignalService.Java

public class SignalService extends Service {

    private static final String TAG = "SignalService" ;
    private TelephonyManager mTelephonyManager;
    private PhoneStateListener mPhoneStateListener;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {

        mTelephonyManager = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);

        mPhoneStateListener = new PhoneStateListener(){

            public static final int INVALID = Integer.MAX_VALUE;

            public int signalStrengthDbm = INVALID;
            public int signalStrengthAsuLevel = INVALID;
            public int getGsmLevel = INVALID;

            @Override
            public void onSignalStrengthsChanged(SignalStrength signalStrength) {

                signalStrengthDbm = getSignalStrengthByName(signalStrength, "getDbm");
                signalStrengthAsuLevel = getSignalStrengthByName(signalStrength, "getAsuLevel");
                getGsmLevel = getSignalStrengthByName(signalStrength, "getGsmLevel");

                Log.d(TAG, "Signal Strength Full Log = " + signalStrengthDbm);
                Log.d(TAG, "Signal Strength Full Log = " + signalStrengthAsuLevel);

            }

            private int getSignalStrengthByName(SignalStrength signalStrength, String methodName) {
                try {
                    Class classFromName = Class.forName(SignalStrength.class.getName());
                    java.lang.reflect.Method method = classFromName.getDeclaredMethod(methodName);
                    Object object = method.invoke(signalStrength);
                    return (int) object;
                } catch (Exception ex) {
                    return INVALID;
                }
            }
        };
        super.onCreate();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        //Register the listener here.
        mTelephonyManager.listen(mPhoneStateListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS|PhoneStateListener.LISTEN_SERVICE_STATE);
        return super.onStartCommand(intent, flags, startId);
    }


    @Override
    public void onDestroy() {
        super.onDestroy();
    }