The best T-Mobile deals for September 2026: new Galaxy Z Fold 8, Google Pixel 11, iPhone 17 Pro, and more

Apple iPhone 17: four devices included on a plan for $25/mo each at T-Mobile
The next generation of iPhones may be imminent now, but T-Mobile is still offering incredible deals on the iPhone 17 series this week. It's just brought back this promotion on the standard iPhone 17, which gets you four devices included on the carrier's excellent Essentials Unlimited plan, which comes in at just $100/mo for four lines. At just $25/mo per line, this particular deal rivals prepaid carriers when it comes to outright value.

Apple iPhone 17 Pro: included with an eligible trade-in at T-Mobile
The headline iPhone deal at T-Mobile this week is this promotion on the excellent iPhone 17 Pro. Right now, the carrier is offering a healthy trade-in rebate of up to $1,000 when you pick up a device with the Experience Beyond plan. According to the T&Cs, you can actually trade-in a phone in any condition, which makes this a surprisingly flexible promotion overall. Note, if you want a cheaper plan, then you can also trade-in for a discount of up to $720 on most unlimited plans right now.

Apple iPhone 17 Pro: included with a switch and new line at T-Mobile
One of the promotions that you'll find across all the latest iPhones at T-Mobile is this promotion for switchers. Right now, T-Mobile is offering up to $1,099 off when you bring your line over from another carrier. Conveniently, that's enough to cover the entire cost of an iPhone 17 Pro. Note, however, you will need a new line on the premium Experience Beyond plan specifically to be eligible for a discount.

Apple iPhone 17e: get two devices included with a new line on the Essentials plan at T-Mobile
T-Mobile's latest deal on the fantastic new iPhone 17e lets you take home two devices when you switch over from a rival carrier. Even better still, no trade-ins are needed at all, and you only need a line on the entry-level Essentials plan to be eligible. That means a plan as cheap as $90/mo for two lines, thanks to the carrier's usual multi-line discounts.

Google Pixel 11 series: get a device included with an eligible plan at T-Mobile
As expected, T-Mobile has a flexible array of deals for its opening promotion on the Pixel 11 series. Depending on the plan, it's entirely possible to get a device included with a new line or upgrade right now. According to the T&Cs, you can get a Pixel 11 included without a trade-in with a new line on the Essentials plan, which is a good option for those on a tighter budget. Alternatively, you can get up to $1,100 off with a trade-in and new line on the mid-tier Experience More plan, or up to $1,300 off with a trade-in on the Experience Beyond plan. That's enough to cover the cost of a Pixel 11 Pro and Pixel 11 Pro XL, respectively.

Samsung Galaxy Z Flip 8 / Fold 8 / Fold 8 Ultra: up to $1,900 off with a trade-in and qualifying line
As you'd expect, T-Mobile has a range of enticing deals for the latest Galaxy Z Fold range. Usually, you'd be looking at paying serious cash for these high-end foldable devices, but T-Mobile is offering a choice between a massive trade-in rebate of up to $1,900 off, or a non-trade-in discount of up to $1,100 off. These are more or less the biggest discounts you'll find anywhere on T-Mobile right now.

Samsung Galaxy S26: four devices included on a plan for $25/mo each at T-Mobile
You've probably already seen T-Mobile's excellent four-line deal on the iPhone 17, and the good news is that a similar promotion is available on the Galaxy S26 right now. Currently, you don't even need to trade-in to get four devices included on the carrier's Essentials Unlimited plan, which comes in at just $100/mo for four lines. That's $25/mo per line with one phone each - a very strong offer for families.

Samsung Galaxy S26 Plus: included with a new unlimited line (no trade-in) at T-Mobile
If you're more into your Android devices, consider T-Mobile's excellent promotion on the Galaxy S26. Right now, you can get this device included with a new line on an Experience More or Experience Beyond plan. As with the deal on the iPhone 17 above, no trade-ins are needed at all with this promotion, making it a very flexible option all around.

Samsung Galaxy S26 Ultra: up to $1,100 with a new unlimited line (no trade-in) at T-Mobile
Impressively, that same deal is also available on the Samsung Galaxy S26 Ultra this week at T-Mobile. While you can't quite score this hefty device on the house, you can still knock a decent $1,100 off this device's cost when you pair it up with a new unlimited line. Usually, you need to trade in an old device to get a discount like this, but right now, all that's needed is a new line on an eligible plan.

Google Pixel 10a: included with a new line (no trade) at T-Mobile
If you're an Android user on a budget, check out this promotion on the Pixel 10a at T-Mobile this week. As with the other devices, this one is being included with a new unlimited data line. Unlike the higher-end phones, however, the plan eligiblity is a little looser here, meaning you don't need one of the higher-end plans to be eligible for a device.

T-Mobile Better Family plan: save up to $1,000 with three lines or more
T-Mobile was already a strong option for families, but the carrier has just unveiled a new promotion called the Better Family plan that's just notched things up further. This particular plan bundles in the carrier's highest level of streaming perks, unlimited mobile hotspot, and free phone upgrades every two years on a plan that starts at just $140/mo for three lines. It's not the cheapest plan available at the carrier, but you essentially get the super high-end perks for much cheaper here, making it a very strong option all around.

T-Mobile unlimited plans: get third line free
T-Mobile's excellent 'third line free' promotion has been a standout for a few years now, and I'm pleased to note that it's still available on all of the carriers' unlimited plans as an alternative to the Better Family plan above. 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: $100 back after 7 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 7 weeks. Overall, a nice little discount for the first year of your contract.

All-in home internet: $200 prepaid card
And, if you want to upgrade to the high-end All-in home internet package, then T-Mobile will rebate you a full $200 after 7 weeks of service. While pricey, this particular plan includes a handy range extender and subscriptions to Hulu and Paramount+ Essential bundled in.

Apple iPad 11 (A16): was $499 now $199 with a new line
Looking for a cheap cellular iPad? Right now, one of T-Mobile's best tablet deals is on the brand new Apple iPad 11. This entry-level slate is available for just $199 when you pair it up with the ​​$25/mo​ unlimited accessory plan with 100GB of premium data and 15GB of monthly hotspot allowance.

Samsung Galaxy Tab A11+ FE: included with a new tablet line at T-Mobile
One of the best tablet deals you'll find at T-Mobile this week is on the Samsung Galaxy Tab A11+ FE. This mid-range slate packs in a decent chipset and display, so it's an easy recommendation when you can get it included with a brand new tablet line.

Apple Watch SE 3: $300 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 include the 40mm model on a cellular plan, thanks to a massive $300 discount.

Samsung Galaxy Watch 9: up to $430 off with a new cellular line at T-Mobile
The latest Samsung Galaxy Watch 9 is available to preorder at T-Mobile, and the carrier already has an excellent opening deal. Right now, you can get up to $430 off when you bundle together a device with a new Watch Plan Plus line at the carrier — a discount that's conveniently enough to cover the entire cost of the standard 40mm Samsung Galaxy Watch 9.

Google Pixel Watch 5: $300 off with a new line
T-Mobile's deals on the latest Google Pixel phones aren't the only promotions worth checking out. Right now, the carrier is offering a healthy $300 discount when you pair up a Google Pixel Watch 5 with a new line on the Watch Plus plan. That discount is big enough to get the Pixel Watch 5 for as little as $5.55/mo over the duration of 36 months.