Resolved What're the difference between a t-mobile compatible & AT&T compatible ST sim card?

[jackwills]

What are the difference between a t-mobile compatible & AT&T compatible ST sim card?
I need one right now for my unlocked iPhone 5, been using AT&T compatible one, works great
It broke, my phone wont read it anymore, need a new one
There only T-mobile compatible available right now, will it work on my unlocked iPhone 5?
Thanks

 

[Mrbobb]

So AT&T and T-M have separate infrastructures (towers). So a T-M SIM will use T-M towers. AT&T is acknowledged as having better coverage and bandwidth of the two. However YOUR particular locale maybe well serviced by T-M, so u gotta do more research with your locale as variable.