Today, Apple released iOS update serial number 6.0.2, which is only for iPhone 5 and iPad mini. This is a fairly minor update that addresses a Wi-Fi issue. You can download either via iTunes or via these direct links:
iPad Mini (Wi-Fi) (iPad2,5) version 6.0.2 (Build 10A550), Download
iPad Mini (GSM) (iPad2,6) version 6.0.2 (Build 10A8500), Download
iPad Mini (CDMA) (iPad2,7) version 6.0.2 (Build 10A8500), Download
5 iPhone (GSM) (iPhone5,1) version 6.0.2 (Build 10A551), Download
5 iPhone (CDMA) (iPhone5,2) version 6.0.2 (Build 10A551), Download
If you have a problem, visit the support page: http://support.apple.com/kb/HT1222
maybe it solves WiFi problem but I have another problem with 3G. It keeps running even if I disable it manually :-(
hello, it's not possible that some application is triggering it, is it 3G? I'm fine.
it isn't. As long as the 3G switch is off, it's simply disabled and no app can change it. I didn't change or install anything before the update.
It was also the case with my iPhone, but I turned it on and off twice and now the 2G switch reacts, as well as 3G on/off according to my settings
4S used to do this quite regularly to me, starting with iOS 5. The first thing I did was the GSM signal dropped, and then after about a minute, 3G came on by itself, even though I always turned it off. Now I don't worry about it anymore and leave 3G on permanently.