How to Get the US Mobile 30-Day Free Trial (2026 Guide)

The core deal is pretty simple — move your number from your current carrier to US Mobile, and you get 30 days of free service. The trial line comes with unlimited talk and text, 30GB of premium data (with 5G mmWave and C-band access included), and 5GB of hotspot data. You'll pick between two network options (Warp 5G or Dark Star) during signup. Autopay needs to stay enabled the entire 30 days, and your line will automatically roll into the Unlimited Premium paid plan unless you make changes at least two days before the trial wraps up.

Here's what you need to qualify:

• New customers only: You must be a brand-new US Mobile customer (no previous accounts or lines).
• Phone number port-in: You must port in an existing phone number from another carrier — new numbers don't qualify.
• Credit card verification: A valid credit card is required for verification, though you won't be charged. Note that certain credit cards may not be accepted, and you may see a temporary authorization hold.
• Device limits: The trial is restricted to one mobile phone line per customer (no tablets or hotspots).
• Promotion exclusions: The offer can't be combined with other US Mobile promotions, and transferring from some select carriers may not be permitted.
• Six-month window: Trial orders are available for activation in your dashboard for up to six months after sign-up, so you don't have to rush.

Since the US Mobile 30-day free trial requires transferring your existing number, your old carrier will automatically cancel your previous service once the port goes through. You can't keep your current plan running as a fallback.

If porting your number feels like too big a leap, US Mobile does have an alternative — new customers who activate with a fresh number can get the Unlimited Starter plan for 90 days at around 50% off (roughly $15 per month). That's a paid promotion rather than a free trial, but it's worth thinking about if you're not quite ready to bring your old number to a new plan.

1. Check device compatibility (IMEI).

The first thing you'll need to do is confirm your phone actually works with US Mobile's networks. Go to USMobile.com and use their IMEI checker tool. You can find your IMEI by dialing *#06# on your phone or digging into your device settings.

2. Select the "30-Day Free Trial" on USMobile.com.

Head to US Mobile's website, find the free trial offer, and choose the option to transfer your existing number. You'll need to pick between the Warp 5G and Dark Star networks, and it's worth doing a little research on which one has better coverage in your area before you decide. You'll also create a new US Mobile account and enter a valid credit card for verification (again, you won't actually be charged just yet).

3. Enter port-in details from your current carrier (Account # and PIN).

You'll need your current carrier's account number and transfer PIN (also sometimes called a port-out PIN). Get in touch with your carrier ahead of time to grab these. Some make it easy to find in their app, others will make you call.

4. Activate via eSIM (instant) or wait for the physical Starter Kit.

If your phone supports eSIM, the US Mobile free trial eSIM option gets you activated almost instantly — nothing to wait for in the mail. If your device doesn't do eSIM or you'd rather have a physical SIM, US Mobile ships a Starter Kit that typically shows up within a few business days. Once your SIM is live and your number has ported over, the 30-day trial clock officially starts.

US Mobile’s 30-day trial is one of the more generous offers I've come across. With 30GB of premium data, you get enough time and data to actually stress-test the network in real-world conditions instead of just crossing your fingers and trusting a coverage map. And, since US Mobile doesn't throttle you to slower speeds during the trial (until you hit the premium data cap), you're getting an honest look at what the paid experience is actually like.

However, it isn’t for window-shoppers. The 30GB data cap is a big step down from the 70GB+ on the paid Unlimited Premium plan, which means heavier users might not get the full picture. And because you have to port in your number, you cut ties with your old carrier the moment you start. If the service doesn’t work for you, porting back is definitely a hassle.

The trial is best for those who are ready to switch and who want to validate that US Mobile is a good option. It's also a solid choice for budget-conscious buyers. If you're not prepared to at least temporarily walk away from your current carrier, you're probably better off with the discounted 90-day new-number option, or just waiting until you're more seriously considering a switch.