Will iPhone 6/6 Plus work on ATT & T-Mobile Network?

[MightyTrojan]

Hi guys,

I posted a similar question a few days ago, but I'm still a little confused so far. I think I asked the wrong way.

Anyway, I just want to confirm:

Will Verizon iPhone 6/6 Plus work on ATT & T-Mobile network perfectly? if I buy it from the Apple Store paid full?
The reason is that I may one day switch back to Verizon, but now I'm using ATT network.

Thanks

 

[dcharleyultra]

Yes, it will.