My iPhone can’t make calls anymore cellular it keep saying I need to update and did update it and still not working
Only the WiFi is working cellular data don’t connect anymore it keeps saying error
iPhone 13 Pro Max, iOS 17
Question marked as
Go to Settings/General/About and look at Modem Firmware. Is the entry blank? If it is you need to reinstall it by restoring the phone to factory settings, then restoring a backup. Back up the phone first, of course:
- How to back up your iPhone, iPad, and iPod touch - Apple Support
- Restore your iPhone, iPad, or iPod to factory settings - Apple Support - follow the instructions to restore using your computer, do not using Settings/General/Reset (which is not included in those instructions)
- Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
If the modem firmware DOES have a value you may have a hardware problem. The first step is what I just posted, but after that you need to contact Apple support using the Get Support link at the top of this page.