i have code to get sim information for android >=22 but i need sim card information like second sim card information for android 21 and below
public boolean isSimAvailable(Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1) {
SubscriptionManager sManager = (SubscriptionManager) context.getSystemService(Context.TELEPHONY_SUBSCRIPTION_SERVICE);
if (ActivityCompat.checkSelfPermission(context, Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED) {
SubscriptionInfo infoSim1 = sManager.getActiveSubscriptionInfoForSimSlotIndex(0);
SubscriptionInfo infoSim2 = sManager.getActiveSubscriptionInfoForSimSlotIndex(1);
if(infoSim1 != null || infoSim2 != null) {
return true;
}
}else {
ActivityCompat.requestPermissions(parent, new String[]{Manifest.permission.READ_PHONE_STATE}, Constants.REQUEST_READ_STATE);
}
}else{
TelephonyManager telephonyManager = (TelephonyManager) parent.getSystemService(parent.TELEPHONY_SERVICE);
if (telephonyManager.getSimSerialNumber() != null){
return true;
}
}
return false;
}