What is SMS?

SMS stands for Short Message Service and is commonly known as texting. It’s a way to send text-only messages of up to 160 characters between phones.

What’s the difference between
SMS and MMS?

A text that includes a file—like a picture, video, emoji, or a website link—becomes an MMS, which stands for Multimedia Messaging Service.

All the talk, text, and data you want.

With T-Mobile ONE, you get unlimited talk, text, and data with unlimited 4G LTE in the U.S. and up to 5GB of 4G LTE in Mexico and Canada.