So since tomorrow is my last day to return the phone i ended up returning it today. Now i am back to my 3GS. Anyway, shall I update to the 4.1 or stay at 3.1.3? Are people having problems with that? or does it work fine? If i do experience problems can I go back to 3.1.3? Im sorry if this was asked before, I tried to search for the answers on here with no luck.