How to Activate an eSIM on Warp 5G (2026)

US Mobile’s three networks, briefly

Before you activate anything, it helps to know what you’re activating onto. US Mobile gives you a choice of three nationwide networks:

• Warp 5G, the network this guide is named after.
• Dark Star.
• Light Speed (you might remember this one as GSM 5G).

All three carry your eSIM the same way. The activation steps don’t change based on which one you pick. The only real difference is coverage footprint in your area and which networks the free trial supports (Warp 5G or Dark Star, not Light Speed). Curious how eSIM works at a deeper level? Our guide to eSIM breaks down the tech without the jargon.

Why activate on eSIM instead of a physical SIM

When US Mobile first rolled out instant eSIM connectivity, the pitch was simple: no more waiting around for a Starter Kit, no fussing with a tiny plastic chip. That’s still the headline. An eSIM is soldered into your phone and reprogrammed over the air, so switching networks is a few taps instead of a trip to the mailbox.

A couple of things make it genuinely better, not just faster:

• Multiple profiles at once. An eSIM can hold several network profiles on one device. You flip between lines in settings, no hardware swap.
• It’s more secure. Nobody can pop the SIM out of your phone, and profile changes need device authentication, which cuts down on SIM-swap fraud.
• Same speed, same signal. On the same network, an eSIM performs identically to a physical SIM. You don’t trade anything away for the convenience.

That early BETA put US Mobile customers among the first to run service on multiple networks and switch in a flash to suit their needs. That future isn’t hypothetical anymore. It’s just how the app works now.

How to activate an eSIM on Warp 5G

If you already have a US Mobile plan, the app does most of the work. Here’s the flow.

1. Get on Wi-Fi

   The eSIM profile downloads over the internet, so a solid Wi-Fi connection matters more than cellular signal here. You don’t need a working line yet.

2. Open the US Mobile app and go to Activate

   Tap the “Activate” tab, then choose “Instantly Activate with eSIM.” This is also where you confirm which network the line runs on.

3. Pick your network

   Select Warp 5G (or Dark Star, or Light Speed if your plan supports it). The steps are identical whichever you choose.

4. Scan the QR code

   Point your camera at the code the app generates. On iPhone the camera or Settings handles it; on Pixel you’ll head to Settings > Network & internet > SIMs > Add SIM. Need help finding the code? Here’s our full step-by-step eSIM activation walkthrough.

5. Confirm and connect

   Your phone installs the profile and the line goes live in a few minutes. Label it (“Personal”, “Travel”) if you’re running more than one line so you can tell them apart.

The video below walks through the whole thing if you’d rather watch than read.

Try a Warp 5G eSIM free

Don’t have a plan yet? This is the low-risk way to test eSIM on a real network before you commit. The free trial runs 30 days with 30GB of premium 5G data, unlimited talk and text, plus a separate 5GB of hotspot, on your choice of Warp 5G or Dark Star.

A few honest details so there are no surprises:

• You’ll add a payment method to activate, but you aren’t charged during the 30-day trial.
• The trial requires porting an existing number from another carrier.
• No contract. If you don’t upgrade, the eSIM profile just stops working. Nothing to cancel.

1. Start at get-started

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

2. Add a new line, then Special Offers

   Choose “Free Trial” and continue.

3. Pick eSIM activation

   Skip the physical Starter Kit and select eSIM, so there’s nothing to wait for in the mail.

4. Choose your network and transfer your number

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

5. Scan the QR code

   Point your camera at the code. Your line is live in a few minutes.

Paid plans start at $8/mo for light users and $25/mo for Unlimited Starter, all with eSIM, a $0 activation fee, and no contract. Annual billing drops those further, with Unlimited Premium working out to $32.50/mo and adding 20GB of international roaming data across 180+ destinations.

Transfer an existing line to your new phone

Already have a line on a physical SIM or an eSIM and need to move it to a new iPhone or Galaxy? You don’t have to start over. The US Mobile app handles Android-to-iPhone and iPhone-to-iPhone transfers in minutes. For the full rundown, see how to move your eSIM to a new phone. The walkthrough below covers the transfer flow.

Is your phone eSIM-ready?

Warp 5G eSIM activation works across a wide range of phones now, not just the latest iPhones. Here’s the quick view.

If activation doesn’t work