Error 'SIM not supported' on iPhone 14 Pro Max

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Error 'SIM not supported' on iPhone 14 Pro Max

Hello! Hopefully someone here can really help. I have an iPhone 14 Pro Max that I’ve used for some time now on T-Mobile. I recently went to switch carriers and in the process found that the phone is still carrier locked to T-Mobile. The phone is now stuck on an activation page saying “Sim Not Supported”. I have tried everything to delete the eSIM. Factory restored 4 times. Went in to T-Mobile and they couldn’t do anything. Went in to Apple and all they did was reset it. The phone is currently rendered useless for seemingly a software design flaw. Any help would be appreciated!

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iPhone 13

Posted on Apr 5, 2025 09:04 AM

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Answer 1

Apr 5, 2025 09:08 AM in response to DevinBU

It is not a software design flaw. Your phone is still locked to T-Mobile. Contact T-Mobile support and ask them to remove the carrier lock, or follow T-Mobile’s support guidance→https://www.t-mobile.com/support/devices/unlock-your-mobile-wireless-device

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Answer 2

Apr 5, 2025 09:23 AM in response to DevinBU

In addition to what Lawrence Finch provided, be advised, that ONLY the carrier a phone is locked to, can unlock it. You can erase it till cows fly, but that won't remove the carrier lock. Apple can't unlock it. I'm surprised T-Mobile said they can't do anything? They are singularly the ONLY ONE'S who can do something. Do you still have any contract remaining on your iPhone with T-Mobile? If you do, they won't unlock it until any remaining contract is satisfied. But it's T-Mobile you need to continue working this out with. No one else can help you.

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Error 'SIM not supported' on iPhone 14 Pro Max

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