diff --git a/src/com/android/settings/DataUsageSummary.java b/src/com/android/settings/DataUsageSummary.java
index 6de7399..8ca62fb 100644
--- a/src/com/android/settings/DataUsageSummary.java
+++ b/src/com/android/settings/DataUsageSummary.java
@@ -1188,6 +1188,12 @@
     private void handleMultiSimDataDialog() {
         final Context context = getActivity();
         final SubscriptionInfo currentSir = getCurrentTabSubInfo(context);
+
+        //If sim has not loaded after toggling data switch, return.
+        if (currentSir == null) {
+            return;
+        }
+
         final SubscriptionInfo nextSir = mSubscriptionManager.getActiveSubscriptionInfo(
                 mSubscriptionManager.getDefaultDataSubId());