Get Android phone Mac with device_id

public static String Getdeviceinfo (context context) {try{Org.json.JSONObject json = new Org.json.JSONObject (); Android.telephony.TelephonyManager TM = (android.telephony.TelephonyManager) context. Getsystemservice (Contex        T.telephony_service);            String device_id = Tm.getdeviceid ();                Android.net.wifi.WifiManager WiFi = (android.net.wifi.WifiManager) context.getsystemservice (Context.wifi_service);      String mac = Wifi.getconnectioninfo (). getmacaddress ();            Json.put ("Mac", Mac);      if (Textutils.isempty (device_id)) {device_id = Mac; } if (Textutils.isempty (device_id)) {device_id = android.provider.Settings.Secure.getString (context.get      Contentresolver (), Android.provider.Settings.Secure.ANDROID_ID);            } json.put ("device_id", device_id);    return json.tostring ();    }catch (Exception e) {e.printstacktrace ();                   } return null;

PS: Required permissions in the manifest file

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

Get Android phone Mac with device_id