An update requires for using cellular data
I am getting this message and unable to use mobile service on my I phone 7.
iPhone 7, iOS 14
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There are several possibilities, which could be narrowed down if you post the exact wording of the error message. But without that here are things to check:
- First, update the Carrier Settings file→Manually update your carrier settings on your iPhone or iPad - Apple Support
- If that doesn’t fix it, see this→If you see No Service or Searching on your iPhone or iPad - Apple Support
- As you have an iPhone 7, see→iPhone 7 Repair Program for "No Service" Issues - Apple Support
If none of these resolve it 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
- Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
If none of these work you probably have an uncovered hardware problem; you need to contact Apple support using the Get Support link at the top of this page.: