Problem updating iphone 3g to 4 2
Sprint says wait 3 minutes after restarting, but another cell provider said wait 5 minutes.
This may allow a cellular settings update to download and load that can fix the problem.
This is an easy process that is worth trying, since it appears to work for a fair number of users impacted by this No Service problem.
Some users report that simple putting their i Phone into Air Plane mode for a short while, then rebooting is effective.
Bonus tip for Sprint users: for Sprint i Phones, you can do a different network settings reset specific to Spring specific network settings by dialing ##72786# then tapping on ‘ok’ at the various prompts to reset network settings and eventually restart the device.If you haven't updated to i OS 4.2.1 on your i Phone 3G you can find i Phone 3G firmware files here.The i Phone 3GS and i Phone 4 (AT&T only) will support i OS 4.3.Anyway, if the above tips helped to resolve your cellular problems with i Phone and i OS 12.1.3, or if you found another solution to resolve any mobile data connectivity issues with i OS 12.1.3 on i Phone, please share with us in the comments below what has worked for you and what has not too.Include your i Phone model, cellular company, and what i OS version you’re running if possible.