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();
}
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