Hi all. I got my iphone 4 about a month or month and a half ago I bought it factory unlocked and everything has worked wonderfully since there. I used the phone today all day made several calls with no problem and a little while later I picked it up and it said "No Service" I live directly under the tower so I know its not a weak signal area and I have never had reception issues before ( except in the mall where I get no signal at all) I rebooted the phone, pulled the sim, toggled airport mode, deleted and reset network settings... Nothing. No signal. I thought maybe it was because of the jail break so I backed up (Have problems with this as well ) and restored to factory settings, still nothing "No service" I want to try a different sim but i dont have a spare one to chop up to fit the micro-sim slot. Also, on a side note. before I did the restore I did a backup with Itunes. The backup went fine all my apps and programs were backed up apparently, but when I try to reinstall the backup in Itunes it starts, gets about half way finished then says " Cannot restore backup because backup cannot be saved on this computer" which is stupid because the backup IS Saved on the computer. Anyhow, I have no idea what to do next. if its a hardware issue then im out like 1,000 bucks because I dont live in a country where you can just return it and get a new one. IF anyone can help I would be most greatfull.