Hello, I am having trouble getting the channels full screen on my roku tv. I have the app and the log in details of my xfinity tv service put in the tv app. Its the same thing which i can watch on my computer and most of the channels go full screen...but on my roku tv all the channels occupy half of the screen and have black borders at the top, botttom, left and right and there is no option to have a full screen experience.
I can help look into this issue with your Roku. Please send me a private message verifying the first and last name of the account holder, the phone number, street address, and the account number associated with your services. To send a private message click on my name "ComcastChe", then click private message me. I'd like to review a few things on my end to see if I'm able to solve this.