The best T-Mobile deals for December 2025: get a free iPhone 17, Galaxy S25, and more this week

Apple iPhone 17 Pro: free with a trade-in, plus free iPad and Apple Watch at T-Mobile
One of the best T-Mobile deals of the entire year for single-line users is this Black Friday holdover promo. You can currently get the excellent iPhone 17 Pro for free with a trade-in and new unlimited line at the carrier, alongside the option to bundle in a free iPad and Apple Watch. You rarely see freebies like these at T-Mobile (unlike other carriers), but note that you do need to take out cellular lines on those accessories. Even if they're free upfront, you're still paying extra per month on your plan here, so consider the total costs carefully.

Apple iPhone 17: four devices for free on an unlimited plan (no trade) at T-Mobile
Here's another incredible 'seasonal' special from T-Mobile; and one that's particularly good for families. Right now, you can get four iPhone 17 for free on an unlimited data plan without the usual trade-in criteria. By itself, that doesn't sound ground-breaking, but the real magic here is in the details. Plan eligibility for this deal includes the carrier's entry-level 'Essentials' plan, which comes out at just $100 per month for four lines. Yep, that means you can get four free iPhone 17 on four lines that average out at just $25/mo each.

Samsung Galaxy S25: four devices for free on an unlimited plan (no trade) at T-Mobile
And, if you prefer Android, then the good news is that you can get that exact same deal on the excellent Samsung Galaxy S25. That means four devices for free when you sign-up for a new unlimited data plan. Again, on the entry-level Essentials plan you're paying just $25/mo per month per line for four lines here. Note, if you want a higher-end device, then you can also get $800 off per device on the Galaxy S25 Ultra (doesn't make them free, but it does make them cheaper).

Google Pixel 10: free with a new line, plus free Pixel Buds 2a at T-Mobile
Here's a good deal for both switchers and existing customers. Both are eligible to get a free Google Pixel 10 right now with a new line on an Experience Beyond plan and the carrier is also throwing in a free pair of Pixel Buds 2a. Note that no trades are needed here, but that's still an option if you don't want to go for the higher-end Beyond plan.

Samsung Galaxy S25 Edge: free with a new unlimited line at T-Mobile
In terms of outright value, T-Mobile deals on the Galaxy S25 Edge might just be the best on the carrier's site right now. No trade-ins are currently needed to get the device for free with a new line, and interestingly, this promotion is eligible on both the Beyond and Next plans. That means it's possible to get this device for free on a slightly cheaper plan without a trade right now.

T-Mobile unlimited plans: get third line free
T-Mobile's best plan deal is the carrier's most well-known. It is, of course, the 'third line free' promotion that's been a staple at the carrier for a few years now. Although single-line users won't find much joy here, families or those with multiple lines will be able to get their unlimited plans down to a minimum price of just $25/mo if they bundle four lines together on the Essentials plan.

Bring your own phone: get Essentials plan for $50/mo
A good option for single-line users, T-Mobile is currently offering a line on its entry-level Essentials unlimited plan for $50/mo when you switch over from another carrier. This equates to a $10/mo saving, so it's definitely worth considering, not least because the carrier will also gift you a virtual prepaid card of up to $800 in value to help pay off your phone at a rival network.

Military, first responder, and senior discounts: get Essentials plan for $50/mo
T-Mobile's unlimited postpaid plans are significantly cheaper if you're eligible for one of the carrier's discount criteria. Eligibility for a discount includes those over 55 years of age, first responders, or active serving military and veterans. You can't stack these discounts, but the savings roughly equate to $10 to $20 per month, depending on how many lines you have, so it's definitey worth applying for if you meet the criteria.

Amplified home internet: $300 back after 14 weeks
It's not just phone plans that are covered in this week's best T-Mobile deals, you can also find some good options if you're looking to switch up your home internet. Right now, for example, the carrier is offering a virtual prepaid Mastercard to home internet users after 10 weeks. Overall, a nice little discount for the first year of your contract.

All-in home internet: $300 prepaid card
And, if you want to upgrade to the high-end All-in home internet package, then T-Mobile's prepaid gift card will also throw in that $300 prepaid card. While pricey, this particular plan includes a handy range extender and subscriptions to Hulu and Paramount+ Essential bundled in.

Samsung Galaxy Tab S10 FE: $275 off with new tablet line
One of the best tablet deals you'll find at T-Mobile this week is on the Samsung Galaxy Tab S10 FE. This mid-range slate packs in a decent chipset and display, so it's an easy recommendation with its massive $275 discount at the carrier this week. A new line is required, however, as with the other tablet deals on our list.

Apple Watch Series 11: buy one get $300 off second at T-Mobile
Got your eye on the new Apple Watch 11? T-Mobile's current promotion offers a massive $300 discount when you buy two devices together, which could be a great option for multi-line users looking to pick up some accessories on the cheap.

Apple Watch SE 3: $200 off with new line, or buy one get $300 off second at T-Mobile
It's not just the Apple Watch 11 that's available with a superb discount at T-Mobile this week. You can also get the Apple Watch SE 3, which is the latest budget-oriented smartwatch from the brand. With today's discount, you can add this device to a cellular plan and pay just $99 in full, thanks to a massive $200 discount.

Samsung Galaxy Watch 8: free with a new watch line
Got an Android phone? Right now, you can get a brand-new Galaxy Watch 8 to go alongside your new phone when you pick it up alongside a new watch cellular plan. Considering this device is currently valued at $399, this is easily one of the best accessory 'freebies' available at T-Mobile.