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 subscribers are facing issues with SIM activation due to a widespread outage. Users are unable to make calls, send texts, or connect to the internet after activating a new physical or eSIM, ...

If you went the prepaid route and ordered T-Mobile's no-contract iPhone 6, you may have no idea what to do once it arrives. Rick Broida is the author of numerous books and thousands of reviews, ...

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 ...