Fix cell data preference in single sim case

Change-Id: Ic956d4a7a4935bcdbeaf868f978e23ba11919f9c
Fixes: 27653690
diff --git a/src/com/android/settings/datausage/CellDataPreference.java b/src/com/android/settings/datausage/CellDataPreference.java
index 5e651e4..b6daa4a 100644
--- a/src/com/android/settings/datausage/CellDataPreference.java
+++ b/src/com/android/settings/datausage/CellDataPreference.java
@@ -121,7 +121,7 @@
             if (!Utils.showSimCardTile(getContext()) ||
                     (nextSir != null && currentSir != null &&
                             currentSir.getSubscriptionId() == nextSir.getSubscriptionId())) {
-                setMobileDataEnabled(true);
+                setMobileDataEnabled(false);
                 if (nextSir != null && currentSir != null &&
                         currentSir.getSubscriptionId() == nextSir.getSubscriptionId()) {
                     disableDataForOtherSubscriptions(mSubId);