[Jeremy8000]

My brother has two iPhone X phones purchased from Verizon, and is considering switching to T-Mobile. I have heard that they will work, but there is some question as to how well they will work compared to ones provided by T-Mobile, both in terms of network (different bands?) and speed (?)

Can anyone who has made that transition or is otherwise knowledgeable with regards to same provide some insights?

Thanks in advance!

[Closingracer]

You’ll be fine. It will have most of not the same bands for the network. It’s already unlocked so you have nothing to lose. Try it out and if it doesn’t work sell or trade them in for new iPhones.

[Dgray2712]

The iPhones Verizon sells has all the hardware for GSM and CDMA networks. Basically, once you pull the Verizon SIM, it’s fully unlocked.

[Jeremy8000]

Thanks - just what I needed to know.