My iPhone 12 has a cellular issue. What should I do
My iPhone 12 has a cellular issue. Won’t make calls or text. How do I fix it
iPhone 12, iOS 16
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See these Apple articles below:
If you see No Service, Searching, or SOS on your iPhone or iPad
If you see No Service, Searching, or SOS on your iPhone or iPad - Apple Support
Manually update your carrier settings on your iPhone or iPad
Manually update your carrier settings on your iPhone or iPad - Apple Support
Update your network provider settings manually on your iPhone or iPad
Update your network provider settings manually on your iPhone or iPad – Apple Support (UK)
Read also -> Related Article: If you see a Cellular, Ultra Wideband, or Apple Pay Issue message after an iOS update or restart again.