I have a unlock sprint IPhone 6 Model : MG6C2LL/A. Can i use the same phone with t-mobile service if i switch to t-mobile
No you can not since Sprint uses the CDMA network, and T-Mobile uses GSM.
Yes! iPhones have have all the bands and features needed. If the phone is unlocked and not on an active Sprint account, you just need a T-Mobile SIM and service.
Hi there! The device would need to be fully unlocked to accept our SIM card, then you'll want to check out the frequency bands it supports against this here: Supported T-Mobile networks to know what kind of connections you can expect, and be sure to check our coverage map! In addition, review: Setup guide to Bring Your Own Device (BYOD) for more information about bringing your own device!
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