Multiple users are reporting a failure of the Ultra WideBand U1 chip in their iPhone 11, iPhone 11 Pro, or iPhone 11 Pro Max after updating to iOS 13.1.3. While restoring an affected iPhone's firmware has solved the problem for some, others have received replacement devices.
https://www.notebookcheck.net/iOS-13-1-3-update-damaging-some-iPhone-11-handsets.439951.0.html
I am facing problem after updating 11.1.3 ios since i have iphone 7 and i am in Nepal.
After updating ios,,my apple id is working for all other purpose but i couldnot connect appstore cause of this i am unable to update and install apps.
Thanks