T-Mobile 5G UC (Ultra Capacity ) T-Mobile USA has 5G coverage branded “Ultra Capacity.” You’ll see “5G UC” branding appear on your smartphone if your phone is accessing this network, assuming your phone has the right logo to display said network. The T-Mobile 5G UC network works with 2.5 GHz and 24/28/39 GHz bands.16 Şub 2022