Getting Started With US Mobile: SIM & eSIM (2026)

What the US Mobile Starter Kit SIM is

Quick history. The Starter Kit was born from a simple question: why make you commit to a network before you know it works in your neighborhood? So instead of shipping one SIM and hoping for the best, US Mobile bundled the hardware you need to get a line up and running and let you test things out.

You’ll still see the old “GSM” and “Super LTE” labels floating around the internet. Ignore those. The branding moved on. US Mobile’s networks are now called Warp 5G, Dark Star, and Light Speed, and you get access to all three nationwide networks on paid plans. The kit itself is just the physical SIM card (and a handy ejector pin) that activates your line on the network you choose.

Ordering a Starter Kit at US Mobile

Getting set up is genuinely painless. If you want the physical SIM route, here’s the flow:

1. Order your SIM kit

   Grab a Starter Kit from the US Mobile shop. It ships with the SIM and an ejector pin so you can swap cards without hunting for a paperclip.

2. Activate and pick a plan

   Head to usmobile.com/activate, then choose a plan. Plans start at $8/mo for light users, $17.50/mo for Unlimited Flex, and $25/mo for Unlimited Starter. Annual billing drops those lower.

3. Insert and go

   Pop the SIM into your phone’s tray, and your line goes live. Bring your own phone, keep your number, no contract holding you down.

That’s the whole thing. No store visit, no salesperson, no activation fee. If you’d rather not wait on the mail at all, keep reading, because there’s a faster way.

The faster route: skip the SIM, use an eSIM

Here’s the thing. A physical Starter Kit still works, but most phones from 2018 onward support eSIM, which is a digital SIM built right into the phone. No card to insert, no mail to wait for. You activate it over Wi-Fi in about two minutes. (Want the deep dive? We have a whole guide to eSIM on US Mobile.)

And the best part: you can test it for free first. US Mobile’s free trial gives you 30 days and 30GB of premium data, plus unlimited talk and text, on the Warp 5G or Dark Star network. You’ll add a payment method to activate, but you won’t be charged during the trial, and there’s no contract if you decide to walk away. Porting an existing number is part of the trial setup.

1. Start at get-started

   Go to usmobile.com/get-started, then create an account or log in.

2. Add a line, pick the free trial

   Choose Add a new Line, then Special Offers, then Free Trial, and continue.

3. Choose eSIM activation

   Skip the physical Starter Kit and select eSIM. Nothing to wait for in the mail.

4. Pick your network and port your number

   Select Warp or Dark Star, then transfer your existing number. Confirm and activate.

5. Scan the QR code

   Point your camera at the QR code US Mobile shows you. Your line is live in a few minutes. Step-by-step screenshots live in our eSIM activation guide.

SIM or eSIM, which should you pick?

Honestly, for most people in 2026 the eSIM is the easier call. But there’s a real case for each, so here’s how they stack up side by side.

About those networks

US Mobile runs three nationwide networks: Warp 5G, Dark Star, and Light Speed. The whole original idea behind the Starter Kit, letting you find what works best where you live, still holds. The difference now is you can switch networks in the app instead of swapping a card, thanks to TelePortal. No hardware juggling.

The free trial runs on Warp or Dark Star. Once you’re on a paid plan you get access to all three, and you can move a line between them whenever you want. We don’t say which carrier each network maps to, and frankly you don’t need to know, since you just pick the one with the best signal for you and go.