So, I have pretty weird issue with my iPhone 3G. The phone has started lagging as hell couple days ago, when I'm trying use programs, when I don't do nothing with it and etc. Even games that used to play like 60fps are playing about 5-10fps. I tried reboot it hundreds of times but still slowdowns and such. The battery is drained to empty like 2-3 hours with full recharge. Only thing that I know what it could be, it may be some network thing. When I turn the phone to plane mode, it's all normal, games and other stuff are working just fine. I may transfer some stuff somehow too, since my computers speakers are making that strange noise when phone are next to them. I have jailbroked iPhone 3G with 3.0 firmware and Ultrasn0w and I'm using prepaid sim card so I have no 3G/Edge/other data services. EDIT: Well, that was fast. I just used "reset network settings" and its working fine now. But if anyone know what that could be, please reply.