Has any one switched a device from T-Mobile to AT&T?

[Jim Nielsen]

I am considering a tablet formerly used on T-Mobile and using it on AT&T network.

 

[itguyjax8430]

I am considering a tablet formerly used on T-Mobile and using it on AT&T network.

Welcome to Android Central!

It all depends on the device, what is the model number? That would help check what bands are available on the tablet and whether it will work all the way on AT&T.