How can I fix cellular update failed

Hi there Kashmars,

Thanks for joining us in Apple Support Communities. We understand you're seeing an alert on your iPhone saying the cellular update failed. We're glad you're here, and we can help.

To start, you’ll want to work through each step in this support article:

If you see an Update Failed or Apple Pay Not Available alert after iOS update or restart

If you tried all the steps in that article, and you're still seeing this message, the next best step is to have your iPhone inspected by a technician. These links will help you get started:

iPhone Repair and Service

Find Locations

Also, if you have an iPhone 7, it may be eligible for this repair program:

iPhone 7 Repair Program for "No Service" Issues

We hope this information is helpful. Don’t hesitate to let us know if you have any more questions.

Cheers.