Check SIM card availability in Android.

 

Sometimes, It is necessary to check the availability of Network service in Android. Here is the code.

TelephonyManager telephonyManager= (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

int simState = telephonyManager.getSimState();

switch (simState) {

    case TelephonyManager.SIM_STATE_ABSENT:

       Toast.makeText(context, "SIM Card Not Available., Toast.LENGTH_SHORT).show();

       break;

     case TelephonyManager.SIM_STATE_READY:

       Toast.makeText(context, "SIM Card Available.", Toast.LENGTH_SHORT).show();

}