Fixed a Data Usage crash

    };

    private void handleMultiSimDataDialog() {

        final SubscriptionInfo currentSir = getCurrentTabSubInfo(getActivity());

        final Context context = getActivity();

        final SubscriptionInfo currentSir = getCurrentTabSubInfo(context);

        final SubscriptionInfo nextSir = mSubscriptionManager.getActiveSubscriptionInfo(

                mSubscriptionManager.getDefaultDataSubId());

        if (currentSir.getSubscriptionId() == nextSir.getSubscriptionId()) {

        // If the device is single SIM or is enabling data on the active data SIM then forgo

        // the pop-up.

        if (!Utils.showSimCardTile(context) ||

                (nextSir != null && currentSir.getSubscriptionId() == nextSir.getSubscriptionId())) {

            setMobileDataEnabled(true);

            updateBody();

            return;

        }

        final String previousName = (nextSir == null)

            ? context.getResources().getString(R.string.sim_selection_required_pref)

            : nextSir.getDisplayName().toString();

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

        builder.setTitle(R.string.sim_change_data_title);

        builder.setMessage(getActivity().getResources().getString(R.string.sim_change_data_message,

                    currentSir.getDisplayName(), nextSir.getDisplayName()));

                    currentSir.getDisplayName(), previousName));

        builder.setPositiveButton(R.string.okay, new DialogInterface.OnClickListener() {

            @Override