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How to solve this problem
See this Apple support link-->If you see a Cellular Update Failed or Apple Pay Not Available alert after iOS update or restart - Apple Support
See this Apple support link-->If you see a Cellular Update Failed or Apple Pay Not Available alert after iOS update or restart - Apple Support
You need to call your carrier. Also have low power mode on at 90% doesn’t do your iPhone any favours. As it does refresh apps and restricts other things.
i do both but nothing happen
You MUST have iTunes version 12.9.4. Check the version. If it isn't 12.9.4 and you can't install that version you will have to take the phone to an Apple store or Apple Authorized Service Provider.
i updated my iphone same as described on link
not solved
Just take in to an Apple Store. And get them to examine it.
is this hardware or software problem??
There's no way of knowing, but if the link I posted first doesn't fix it most likely it's hardware.
Cellular Data update failure
