ZDNET's editorial team writes on behalf of you, our reader. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. If we have made an error or published misleading information, we will correct or clarify the article. If you see inaccuracies in our content, please report the mistake via this form.

T-Mobile offers nationwide mobile coverage for talk, text, and data, without a monthly contract, with plans starting at $50 per month. And right now, when you bring your device and old number to T-Mobile, you'll get up to a $400 prepaid Mastercard on them for making the switch.

This deal applies to all T-Mobile plans, including Essentials, which means you don't have to spring for the most expensive Experience Beyond plan to get your gift card. However, if you do choose the cheaper Essentials option, you'll only qualify for a $300 gift card, which is still a great rebate. All T-Mobile phone plans include unlimited talk and text, but only the Experience More and Beyond plans offer unlimited data. The higher-tier plans also include a 5-year price guarantee, so you can lock in your current plan fee for long-term savings.

To get your prepaid Mastercard, new T-Mobile customers must pick a plan and then download the T-Life app for a guided walkthrough on how to switch networks. Once you're all set up, you'll get a link to claim your $400 gift card. You'll have 30 days to claim, and delivery may take up to eight weeks.