iPhone 5 users are regularly finding themselves with a phone that cannot be used as a phone. There seems to be an issue with the iPhone 5 reporting No Service, sometimes for no reason. Whilst, occasionally users do go into bad service areas, when they reach somewhere with good coverage the service should pick up again. For some, it isn’t. It would appear that this is a known issue and that Apple are currently working on a fix for it but, in the meantime there are a few things you can try that may restore service to your iPhone 5, albeit temporarily.
- Go into Settings and switch Airplane Mode on and off. This sometimes works as it forces the iPhone to search for a network.
- Try switching the phone on and off a couple of times.
- Go into Settings > General > Reset > Reset Network Settings. You will be asked for your pass code and you will have to re-enter your Wi-Fi details again.
- A complete Restore through iTunes will work as well.
The problem appears to be with iOS 6 and occurs when the iPhone 5 is switching between LTE and 3G or 4G networks. The above fixes are only temporary and you may find yourself having to wait until Apple comes up with a fix for it, although there is no timeline on that yet.
As an aside, some users are reporting that they have had their devices or sim cards switched for new ones and it seems to have cured the problem for most of them so this may be worth taking into consideration as well.
See Also : Other iPhone Unlocking Techniques