ContributionsMost RecentMost LikesSolutionsUpgrading to a new device I’m trying to upgrade my device to a new, but the page will not allow me to add new device to cart. How do I resolve this? Re: What are the current options for upgrading to a new device on an existing T-Mobile plan? What if the prompts don’t allow you to add desired new device to your cart? T-Mobile settings Is there a way in the settings to keep T-Mobile from automatically downloading apps after watching an in game ad? It's really intrusive and annoying, and I don't recall giving them permission to do that.