Greetings to experts and members. My 4S is still on 5.0 and I have heard 5.1.1 JB might be out soon so I am hoping to get a firm answer before that. Back with iPhone 4, I had AT&T's and it can be activated with AT&T SIM and connect to iTunes. Now I have a Sprint 4S. I am wondering how do I activate the phone after a restore/upgrade? Just connect to iTunes without SIM? Last year I bought Sprint 4S from eBay that came unactivated, I tried everything and just won't work so I had to return it. Can any oversea (non US) Sprint owners share some info? TIA!