ap

 public String NetType(Context context) {
         try {
             ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
             NetworkInfo info = cm.getActiveNetworkInfo();
             String typeName = info.getTypeName().toLowerCase(); // WIFI/MOBILE
             if (typeName.equalsIgnoreCase("wifi")) {
             } else {
                 typeName = info.getExtraInfo().toLowerCase();
                 // 3gnet/3gwap/uninet/uniwap/cmnet/cmwap/ctnet/ctwap
             }
             return typeName;
         } catch (Exception e) {
             return null;
         }
     }