T-Mobile is now offering a micro-SIM card for customers wanting to use unlocked iPhone 4 handsets on its network. This move shows that T-Mobile is not only embracing unlocked iPhone 4 users, but ...

Not too long ago, T-Mobile was offering free pre-paid SIM cards, plus free shipping. The deal is now back on, so if you were thinking of making a switch off of your current carrier, be sure to hop ...

T-Mobile is sending out legal notices to let its customers know that they won't be able to use a Sprint SIM card after May 1, 2023.

No jailbreak required. All you really need to do is beg, steal or borrow an active T-Mobile SIM card and slip it in the phone for the duration of the setup process (it should only take a few minutes).

The steps on T-Mobile's website include verifying your smartphone is an eligible device, submitting screenshot proof of your current device payment plan balance, ordering a T-Mobile SIM card and ...

To carve that SIM into a micro-SIM, you’ll want to gather a few tools: your unlocked iPhone, your T-Mobile SIM card, a sharp knife (I used a box cutter), and a pen or marker.

T-Mobile claims most of the phones pre-date the iPhone 4, which means those users physically had to trim their SIM card to get them to fit into their device.