I bought iphone 7 plus unlocked device from best buy for full price $950, Its locked by Tmobile ,i am not able to use any other network Sims in my mobile. When i ask T-mobile they said it’s not locked by T mobile.
I was went to apple store and checked with my mobile IMEI no, it’s locked by T- Mobile. T-mobile they are not helping me to unlock my device.
T-Mobile cannot unlock a device that is not T-Mobile branded and T-Mobile doesn't sell their branded phones in Best Buy other than pre-paid lower end phones. While an unbranded/unlocked iPhone from Best Buy will work on the T-Mobile network they aren't branded T-Mobile devices. You will have take your issue up with Best Buy since they sold it to you as unlocked when apparently it wasn't. But if the IMEI is not shown as a T-Mobile branded or sold phone in their system they can't submit the request to have it unlocked.