*update* Why have an app if it doesn't serve ALL AOF YOUR CUSTOMERS, like really no to prepaid?? So unprofessional. I don't understand how T Mobile's online presence can be so... Bad. The website and the app hardly work. Like you can't even pay your bill without there being an error. God forbid you have to update your auto payment details or want to pay manually for a month. So not user friendly and sloooow. Why are there so many options you can't use? It's just there to look the part?