If you need to know sim card information, you can do so very easily in NativeScript for Android. Use the following code:

AndroidManifest.xml

NativeScript code

function simManage(){
    var tm = android.telephony.TelephonyManager;
    var context = utils.ad.getApplicationContext();
    var manager = context.getSystemService(android.content.Context.TELEPHONY_SERVICE);
    var phoneNumber = manager.getLine1Number();
    var countryCode = manager.getSimCountryIso();
    var simOperator = manager.getSimOperator();
    var carrierName = manager.getSimOperatorName();
    var deviceId = manager.getDeviceId();
    var deviceSoftwareVersion = manager.getDeviceSoftwareVersion();
    var simSerialNumber = manager.getSimSerialNumber();
    var subscriberId = manager.getSubscriberId();
    var callState = manager.getCallState();
    var dataActivity = manager.getDataActivity();
    var networkType = manager.getNetworkType();
    var phoneType = manager.getPhoneType();
    var simState = manager.getSimState();
    var isNetworkRoaming = manager.isNetworkRoaming();
    var mcc = "";
    var mnc = "";
    if (simOperator.length >= 3) {
        mcc = simOperator.substring(0, 3);
        mnc = simOperator.substring(3);
    }
    return {
        phoneNumber:phoneNumber,
        countryCode:countryCode,
        simOperator:simOperator,
        carrierName:carrierName,
        deviceId:deviceId,
        deviceSoftwareVersion:deviceSoftwareVersion,
        simSerialNumber:simSerialNumber,
        subscriberId:subscriberId,
        callState:callState,
        dataActivity:dataActivity,
        networkType:networkType,
        phoneType:phoneType,
        simState:simState,
        isNetworkRoaming:isNetworkRoaming,
        mcc:mcc,
        mnc:mnc
    };
}

When you need the information, call simManage() and it will return the data.