Is the user interface for the AT&T TV app on my Roku Stick+ created by AT&T or by Roku?
The user interface and all features are programmed and controlled by the channel provider, AT&T in this case. Roku just provides the platform on which it runs.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X