WiFi turning on and Mobile Data button missing on Galaxy SIII after 4.3 update

I found an app that adds a toggle icon for mobile data that works on the S3. I don't like that they took away the button with the update and was getting tired of going into settings to switch it on and off.

Data Enabler Widget by farproc

https://play.google.com/store/apps/details?id=com.farproc.data.enabler

Add the Widget to your homescreen.

 

WiFi turning on by itself is probably thanks to the Connections Optimizer, a Sprint concoction and major pain for anyone who likes to be in charge of their own phone. Look under Connections > More Networks > Mobile Networks and uncheck the box for Connections Optimizer. When activated, it searches for open WiFi in order to minimize network data usage.