I'm having some serious signal issues on my iphone,mto the point where its jsut getting intolerable. Im in toronto with fido, and what ends up happening is that ill have full bars on the screen, and suddenly ill either see no service, and then it will search for half a minute or so, and then signal will come back, or it will jsut say no signal and then stays that way until i notice andndo airplane mode on off. If im in an elevator it especially has issues with reaquiring signal once im out. The other variant of this issue is that suddenly my phone goes from full bars to 4 flat lines. So it doesnt say no signal, but i know the 4 flat bars basically mean theres no signal. Even when my phone has full signal, i question what the signal strength really is. I basically miss 80% of my calls, ATLEAST. And thats not an exaggeration. On some busy days i wont hear a single ring for any calls, and ill just get that text messaging notifying me of a missed called. I used to have this issue with a 3gs back in the day. Then it went away, eitehr randomly, or after my 4th 3gs exachange for otehr issues. Surprisingly with iphone 4 i had signal issues, but didnt have this random going from full bars to no bars issue. Then i got the 4s and its the worst. I went in, got it exchanged, and still happening, so leads me to think its jsut a general iphone issue. But i find it hard to believe the iphone can be this bad for eferyone at receiving calls. What ive tried is restores, and my iphone is not jailbroken. It used to be back in the day with my 3gs, never jb with the 4 onwards. I even thought maybe there are lingering jb elemetns in my backup, so i tried an icloud backup and restore, but no luck. Can someone explain if this is my cellphone provider issue or a general iphone issue. Ive done all these exchanges but still ahfe problems, so maybe its iphones in general? Ive tried with both the use data connection to search for best signal feature in location services, and not sure what is better. Currently ive turned it off, to ensure minimal intrference from gps if in fact it is that.