Problem updating iphone 3g to 4 2
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.
Try this first, this is based on a few recommendations from cellular carriers.
Some i Phone users have discovered cellular data issues after installing the i OS 12.1.3 update, showing “No service”, no cellular data, no cellular reception bars, and sometimes seeing a “Cellular Update Failed” message similar to what was happening with some i Phones after installing i OS 12.1.2.
This seems to mostly impact i Phones on particular cellular networks, but it’s not entirely clear why some i Phone devices will experience cellular data problems after installing the i OS 12.1.3 update while others don’t.
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.