LadyPhoenix
Member
came across this - may help a bit on Wifi connectivity. 
PS read all as the code changed with the JB update
http://drippler.com/updates/share/how-pick-better-wi-fi-signal-your-samsung-galaxy-s3
PS read all as the code changed with the JB update
http://drippler.com/updates/share/how-pick-better-wi-fi-signal-your-samsung-galaxy-s3