Android Telephone manager to detect sim

Question

I am working on an Android auto-start app that\'s basically dependent on SIM card state. When my app auto starts I need it to check where the SIM card has been changed or n

Answer 1

Do you try your app on android emulator? Maybe you must try your application on android phone directly, i think the android emulator cannot support your application.

Answer 2

Below code will help you to fetch the SIM Serial No

TelephonyManager mTelephonyMgr =
(TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);

String sSimSerial = mTelephonyMgr.getSimSerialNumber(); 

Set the following permission on Android Manifest file

android.permission.READ_PHONE_STATE

Answer 3

If you want to react to a Sim change you need to set a listener:

final TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);

    tm.listen(new PhoneStateListener() {
        @Override
        public void onServiceStateChanged(ServiceState serviceState) {
            //Code in here executed on Sim State change
        }

        @Override
        public void onDataConnectionStateChanged(int state) {

        }