The fastest nationwide 4G LTE Network

Designed Data Strong

We’ve achieved more data capacity per customer than AT&T and Verizon. We designed our network with densely-packed cell towers. So now, we have the means to deliver more data to you.

Introducing Wi-Fi unleashed

With Wi-Fi Calling, J1 SIM transforms your Wi-Fi connection as if it’s an extension of the network. It’s like adding tons of personal J1 SIM towers—all at once. Talk and text in places you never thought possible.

Instant Network Access

J1 SIM is ideal for anyone who wants to enjoy more affordable talk, text, and data anywhere in the US.That’s because in addition to unmatched cost savings and convenience, J1 SIM lets you access the T-Mobile 4G network instantly, with no long-term contract or credit check required.This makes it the perfect choice for international J1 travelers to the United States.