CODEWITHSUNDEEP
androidtelephonytelephonymanager
Vincenzo
Vincenzo

Reputation: 51

Android: TelephonyManager.getSimSerialNumber() returns null

in which cases this method returns a null reference? Can only depend on the sim card? Doesn't exist, in these cases, an alternative to retrieve an identification number of the latter?

Thanks to all!

Upvotes: 5

Views: 12046

Answers (3)

Adarsh Chithran
Adarsh Chithran

Reputation: 218

getSimSerialNumber() needs privileged permissions from Android 10 onwards, and third party apps can't register this permission.

See : https://developer.android.com/about/versions/10/privacy/changes#non-resettable-device-ids

A possible solution is to use the TELEPHONY_SUBSCRIPTION_SERVICE from Android 5.1, to retrieve the sim serial number. Steps below:

  • Check for READ_PHONE_STATE permission.
  • Get Active subscription list.( Returns the list of all active sim cards)

  • Retrieve the sim details from Subscription Object.

    if ( isPermissionGranted(READ_PHONE_STATE) ) {

            String simSerialNo="";

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1) {

            SubscriptionManager subsManager = (SubscriptionManager) context.getSystemService(Context.TELEPHONY_SUBSCRIPTION_SERVICE); 

            List<SubscriptionInfo> subsList = subsManager.getActiveSubscriptionInfoList();

            if (subsList!=null) {
                for (SubscriptionInfo subsInfo : subsList) {
                    if (subsInfo != null) {
                        simSerialNo  = subsInfo.getIccId());
                    }
                }
            }
        } else {
            TelephonyManager tMgr = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
            simSerialNo = tMgr.getSimSerialNumber();
        }
    }

Check if this helps

Upvotes: 3

kannappan
kannappan

Reputation: 2250

try the below code..i will help full for u..

TelehponyManager manager = (TelehponyManager)getSystemService(TELEPHONY_SERVICE);

String imei = manager.getDeviceId();

String imsi = manager.getSubscriberId();

Upvotes: 0

Nandagopal T
Nandagopal T

Reputation: 2037

Please make sure whether you have added the following permission in the Android Manifest, if not please add this statement add try again.

<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>

Note: Add this permission tag outside the application tag..

Sample Snippet: 

.....
.....
.....
</application>
<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
<uses-permission android:name="android......"/>
 ..........
 </manifest>

All the Best

Upvotes: 2

Related Questions