How to Switch from US Mobile to Ultra Mobile: A Comprehensive Guide
By Ultra Team
Published June 29, 2026
Are you looking to leave US Mobile for a new carrier and need some help? That’s what we’re here for. This guide will walk you through how to switch from US Mobile to Ultra Mobile, if that’s where you decide to go next. First we’ll cover why we think Ultra Mobile makes the most sense as your next wireless carrier, then we’ll explain how to make the switch, including steps on bringing your phone and number along with you. Let’s get started.
Why Switch to Ultra Mobile
So you know you’re done with US Mobile, but you need to know where to go next. Here’s a quick rundown of why we think Ultra Mobile is your best choice when it comes to wireless.
Multi-Month Plans
We know you value flexibility, which is why we offer 1, 3, 6 & 12-month plans. And just like bulk purchases elsewhere, the more you buy up front, the more you save.
Free International Features
Ultra Mobile Customers get Unlimited Talk to 90+ International Destinations, Unlimited Global Text and Unlimited Talk & Text in Mexico & Canada.1
Reliability on the T-Mobile 5G Network
Stay connected to those who matter most with coverage you can trust on America’s largest 5G network. T-Mobile’s network provides 4G LTE coverage to 99% of Americans and 5G coverage to 98% currently… and it keeps growing.2
Flexible Purchase Options
Whether you want to purchase your plan online anytime or would prefer to go into a store for assistance, Ultra has you covered.
Free Wi-Fi Calling & Mobile Hotspot
These additional features that will help you make the most of your wireless experience are included at no extra cost.3
Amazing Customer Support
Our Customer Care team currently has an average Customer Satisfaction score of 97%.4
How do I switch from US Mobile to Ultra Mobile?
Now that you’ve decided to join the Ultra family, it’s time to officially make the switch. Let’s go over what to do before, during and after you’ve made the switch.
1. Prepare for the Switch
Make absolute sure Ultra Mobile is going to work for you by checking your phone’s compatibility with our network and the coverage in your area. Make sure you look at home as well as where you work and any other areas where you spend most of your time. For more tips on switching, you can also visit our How to Switch page.
2. Bringing Your Own Phone?
If you are bringing your own phone, in addition to being compatible with our network, it must also be unlocked. For more information on bringing your own phone to Ultra, visit our BYOP page.
3. Bring Your Own Number (or Get a New One)
If you would like to bring your US Mobile number over to Ultra, there are a few things you need to do before you activate your Ultra Mobile account.
Don’t cancel your US Mobile service yet
If you cancel your US Mobile account before transferring your number to Ultra, the number will be lost.
Gather essential account details
To bring your number to Ultra, you’ll need your Us Mobile Account Number, Account PIN or Number Transfer PIN and billing ZIP Code.
Getting your US Mobile account number
Your nine-digit account number should be in your US Mobile dashboard under Settings > Account, or it may be printed on your billing statement. You can also contact US Mobile customer support at (878) 205-0088 to ask them for your account number.
Get your US Mobile number transfer PIN
While on the phone with their customer support, you will also need to ask them for your account PIN or number transfer PIN.
If you want a new Ultra Mobile phone number, all you need to do is provide us with your home ZIP code during the activation process and we’ll give you one based on your location.
For more information on bringing your number to Ultra, check out our number transfer blog.
4. Choose the best plan for you
We offer data plans ranging from 500MB up to Unlimited (with all plans including Unlimited Talk & Text). If you’re not sure which plan is right for you, you can read more about how our plans work here and even take a short quiz that will match you to the ideal plan.
5. Choose your SIM Preference
Ultra Mobile supports SIM cards and eSIM. You can have a physical SIM card mailed to you within about 3-5 business days. If your phone is eSIM-compatible, you can opt to activate with an eSIM in minutes. Not sure? You can check if your phone supports eSIM with just a few clicks.
6. Time to Activate!
From a computer, head to my.ultramobile.com/activate to begin the activation process. If you need help, check out our step-by-step activation guide, or visit our How to Activate page.
You’re ready to join the Ultra Mobile family
Now that you’re an expert on leaving US Mobile for Ultra Mobile, it’s time to take what you’ve learned and officially make the switch. You could be just a few days—or if your phone supports eSIM, a few minutes—away from saving money and getting Unlimited Nationwide Talk & Global Text, on America’s largest 5G network, with Ultra Mobile. All you have to do now is find the right Ultra Mobile Plan for you.
1Unlimited Talk & Text in Mexico & Canada: Select plans only; no international data roaming included; not for extended international use. INTL 90+: See www.ultramobile.com/international-calling/ for destinations; list subject to change.
25G access req’s capable device & SIM w/in appropriate coverage area. Actual availability, speed & coverage may vary
3Capable device required. Actual availability, speed & coverage may vary. Heavy data users (>35GB/mo.) may notice slower speeds when our network is busy. Includes up to 10GB hotspot on Unlimited (20GB on Unlimited+). Videos stream at ~480p.
4As of October 2025
