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Posts: 1
Registered: ‎12-25-2014
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IPhone 13 universal put wrong sim card

I just got a new phone 13 from bestbuy with tmobile carrier today but my wife accidentally put her sim card which isn't tmobile so now it's locked to different carrier and I can't use tmobile sim card on it. it's saying "Sim not supported ". So please let me know what can I do. thank you so much

Posts: 6,667
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Registered: ‎08-21-2017

Re: IPhone 13 universal put wrong sim card

Hello, ducdiep,


Thank you for stopping by our community forums. Over the last few years, I've become a big fan of unlocked phones for the convenience that they offer. I would be glad to give you some details on how to get assistance moving forward.


Generally, universal iPhone will become locked to the matching carrier for the first SIM card that is inserted. Because this is a T-Mobile SIM card, I would recommend contacting T-Mobile support for more information about the unlocking process.


I hope I was able to clarify this! Please don't hesitate to let me know if you have more questions I can help with.

AndrewB|Social Media Specialist | Best Buy® Corporate
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