The SIM card is your device's ticket to the T-Mobile network! Learn how to buy one, install or replace it, and change or activate a SIM card/eSIM.

The SIM stores your account information and connects your device to the T‑Mobile network. Your phone may have two options for SIM cards, a digital eSIM or a Physical SIM card.

The Mobile Internet 3-in-1 SIM Card fits all LTE and GSM tablets, hotspots, and wearables. The kit includes a Nano SIM card with Micro and Standard SIM adapters.

Get a T-Mobile SIM card & plan. Once you get your SIM card, pick the plan you want, and your phone will be connected to our network.

If you purchased your device from T-Mobile or if you have a T-Mobile authorized device, please follow the steps outlined below to determine your eligibility for device unlocking.

SIM Protection is a free feature offered to all T-Mobile Postpaid customers. It prevents bad actors from moving your number to another device and using it for fraud.

The T-Mobile Prepaid eSIM app lets you activate new T-Mobile prepaid service on an iPhone or Android with eSIM. For other devices, check the compatibility to bring your device to T-Mobile …

T-Mobile has launched the first Standalone 5G service in America to give you a great network experience. To access Standalone 5G, the SIM card in your compatible 5G device must be …

T-Mobile device unlock Learn how to use your device on another carrier or wireless provider's network. This may also be known as SIM unlock, network unlock, or carrier unlock.

Discover the latest T-Mobile prepaid phone plans, with unlimited talk and text, high-speed data on our 5G network. Learn more now!