At&T samsung galaxy s4 and t-mobile sim card

[AC Question]

Recently, I bought a samsung galaxy s4 from At&T. My family uses a t-mobile family plan. Will I be able to get a t-mobile sim card and put it inside my samsung galaxy s4 and will it work?

 

[Smply_Rcklss]

Not unless u have your carrier unlock it.

Tapatalk'n On The M8