The Samsung Vibrant is a phone manufactured for T-Mobile in the U.S. When you purchase this phone, it will have a carrier lock that prevents you from using this phone with a non-T-Mobile cellular ...

T-Mobile is making it harder than ever to buy into the Un-carrier branding. This week, leaked internal documents revealed that T-Mobile is ready to expand the activation fee to just about every ...

T-Mobile's eSIM app for iPhone. In preparation of a wide public launch expected before the end of the year, T-Mobile on Thursday previewed eSIM activation app for iPhone that will allow iPhone XS and ...

You can just buy a bare sim card at the T-Mobile store or online as well, I think it's $8 or something like that (with $5 of airtime credit). You can't technically activate the $30/mo plan in-store ...