For a limited time, $35 device connection charge waived when activating a new line online or call 844-289-7477 - agents are ready to help you find the best deal.

Samsung

Galaxy S21 Ultra 5G

Customize your device

Starting at $0

A T‑Mobile SIM card connects your device to the T‑Mobile network. Insert this SIM into your new phone and start enjoying all the benefits of our unlimited plans.

Already have a phone you love? Use this SIM card in your unlocked, compatible device to access the T‑Mobile network.

Not sure if your phone is compatible?

Shop for SIM cards for as low 
as $0 today.

The SIM stores your account information and connects your device to the T‑Mobile network. Your phone may have two options for SIM cards, a digital eSIM or a Physical SIM card. Please select one of the following to continue bringing your own device. To select a digital eSIM, please check your device compatibility below by entering your IMEI number.

This product is no longer available.
Good news, we have other alternatives.

Shop other devices

startingAtText strikeThroughValue actualMonthlyValue/month for paymentTerms months withPromotionText

Due today: dueToday + tax & other charges

Full price: payInFull + tax

Plus $35 $0 Device Connection Charge Online only

Plus $35 Device Connection Charge

Plus $35 $0 Device Connection Charge

or select Ship to me in cart to have your order shipped.

You can purchase a maximum of 5 lines in a single transaction.

Go to cart

You can purchase a maximum of 5 lines in a single transaction.

Go to cart

Delivery Options

Est. ship date

shippingDate

Are you a new or existing customer?

Welcome to T-Mobile (new customer)

If you're an existing customer, please

Choose Sim Type

Adding a line to your account

model | phoneNumber

 

jumpEligibleText|html

Transferring your number?

Check to see if your current number is eligible for transfer

Transferring your number?

Check to see if your current number is eligible for transfer

Keeping your phone number

phoneNumber|html

This number will remain active on your current device. 
When you receive your new device, call us to transfer the number to T-Mobile.

Getting a new number

Eligible trade-in device

marketingName | capacity


Estimated one-time trade-in credit: $oneTimeCredit

In deviceCondition condition

Outstanding trade-in balance: $installmentBalance

This amount must be paid before completing your order. The remaining amount will be added to your cart.

Have a trade-in device?

Skip trade-in

Eligible trade-in device

marketingName | capacity

firstName phoneNumber

Estimated one-time trade-in credit: $oneTimeCredit

In deviceCondition condition

Outstanding trade-in balance: $installmentBalance

This amount must be paid before completing your order. The remaining amount will be added to your cart.

Selected trade-in device

marketingName | capacity

firstName phoneNumber

To continue, we need more information to verify your trade-in. Please call 1-800-T-MOBILE, or dial 611 from your T-Mobile phone.

Trade-in skipped

Select a trade-in device

Promotion

Applied

promoName

Recurring promotional savings: totalPromotionalValue

Credit of recurringCreditAmount over paymentTerms months

If you cancel before paymentTerms credits, credits stop and balance on required finance agreement may be due; contact us. For well-qualified customers, plus tax. 

Choose a payment option

Find out what you’ll pay with no impact to your credit score.

Check what I qualify for

with promotion
Starting at

You’re protected

Good news! Your current title plan will transfer to your new device.

You’re protected

Good news! Your new phone will be protected. Your title plan will transfer to your new device.

priceDifference from current protection plan

priceDifference from current protection plan

New price: price/month + tax

73% of people have cracked the front screen of their phone

Did you know?

You can change your protection plan anytime by logging into your account

Why has the price for my protection plan changed?

You updated your protection plan to cover another device which has resulted in a price change.


To change your protection plan, log in and visit My account.

inventoryStatus storeName (storeDistance mi)

Want to get it sooner?

Key features

T-Mobile Starlink

Stay connected in remote locations where tower signals can't reach. Sign up for the chance to beta-test satellite messaging.

Learn more about satellite coverage

37 Hours Talk Time

11.87 Days Standby Time

Other features

  • 5G Connectivity
  • 108MP Wide Lens w/ 12-bit Raw Support + Laser Auto Focus
  • 8K Video
  • Director’s View
  • Single Take AI Video Snap
  • Dual Lens 100x Space Zoom
  • Best Display
  • Striking new Design
  • Intelligent 5000 mAh battery
  • Ultra Wide Band (UWB) Capable
  • HyperFast Processor
  • Portrait Mode
  • Night Mode
  • Security
  • Super-Fast Charging (Power Adapter sold separately)
  • Wireless PowerShare
  • Water & Dust Resistant
  • Android 11 OS
  • Bluetooth 5.0
  • Optimal Mobile Gaming
The Samsung Galaxy S21 Ultra 5G is purposefully crafted so you don’t need to choose between video and photo. With a single tap, you can pull super-clear stills — up to 33MP — straight from high-resolution 8K video. The 108MP camera brings you the highest resolution camera you can get on a smartphone for stunning photos. Unleash your creativity by adding an S Pen (sold separately), allowing you to edit with precision and bring your vision to life. The amazing 6.8” screen comes with Samsung’s highest contrast ratio and an adaptive display that automatically adjusts from 10Hz to 120Hz for a faster, smoother scrolling experience that is easy on the eyes while efficiently using the large 5000mAh battery. The Galaxy S21 Ultra was designed to be epic in every way and now experience the incredibly advanced Galaxy on the 5G leader in coverage.

Available in three memory variants, 12GB RAM/128 ROM, 12GB RAM/256GB ROM, or 16 GB RAM/512GB ROM.

Check out our latest Samsung deals on the newest Galaxy phones, tablets, and watches. Also, be sure to explore the awesome new Samsung Galaxy S22 5G, Galaxy S22+ 5G, and Galaxy S22 Ultra 5G, largest and fastest 5G Network.

Need help choosing your next Galaxy phone? Check out our complete Samsung Galaxy buyer’s guide or see our comparison of the new 22 vs S21.

What’s in the box

  • Samsung Galaxy S21 Ultra 5G
  • C to C USB Cable
  • SIM Pin/Ejector
  • Quick Start Guide
  • Safety and Warranty Information

Additional spec details

Battery Description
5000 mAh
Ports
USB Type-C
Connectivity
Wi-Fi 802.11a/b/g/n/ac/ax, UMTS,HSDPA,HSPA+,LTE,5G, Bluetooth 5.0, Satellite Capable
Processor
Qualcomm® Snapdragon™ 888 (5nm)
Operating System
Android
Ram
12 GB
Maximum Expandable Memory
0 GB
Wireless Network Technology Generations
4G, 4G LTE, 5G
Supported Email Platforms
Apple Mail, POP3, IMAP4, SMTP, Microsoft® Exchange, AIM, Yahoo!® Mail, GMail, AOL®
Hearing Aid Compatibility
M3, T3
WEA Capable
true
Mobile Hotspot Capable
true
Frequency
UMTS: Band I (2100), Band II (1900), Band IV (1700/2100), Band V (850), VIII (900); GSM: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz; 5G: n41, n71, n260, n261; LTE: 2, 4, 5, 12, 25, 26, 41, 46, 48, 66, 71; LTE Roaming: 1, 3, 7, 8, 13, 18, 19, 20, 28, 38, 39, 40
Display
6.8” WQHD+ Dynamic AMOLED Curved Display
Display resolution
3200 x 1440 pixels
Weight
8.07 Ounces
Length
6.5 Inches
Height
0.35 Inches
Width
2.98 Inches

Key features

T-Satellite

Stay connected in places never thought possible with the only mobile + satellite network that connects automatically. Sign up for the chance to beta-test satellite messaging.

Learn more about T-Satellite

37 Hours Talk Time

11.87 Days Standby Time

Other features

  • 5G Connectivity
  • 108MP Wide Lens w/ 12-bit Raw Support + Laser Auto Focus
  • 8K Video
  • Director’s View
  • Single Take AI Video Snap
  • Dual Lens 100x Space Zoom
  • Best Display
  • Striking new Design
  • Intelligent 5000 mAh battery
  • Ultra Wide Band (UWB) Capable
  • HyperFast Processor
  • Portrait Mode
  • Night Mode
  • Security
  • Super-Fast Charging (Power Adapter sold separately)
  • Wireless PowerShare
  • Water & Dust Resistant
  • Android 11 OS
  • Bluetooth 5.0
  • Optimal Mobile Gaming
The Samsung Galaxy S21 Ultra 5G is purposefully crafted so you don’t need to choose between video and photo. With a single tap, you can pull super-clear stills — up to 33MP — straight from high-resolution 8K video. The 108MP camera brings you the highest resolution camera you can get on a smartphone for stunning photos. Unleash your creativity by adding an S Pen (sold separately), allowing you to edit with precision and bring your vision to life. The amazing 6.8” screen comes with Samsung’s highest contrast ratio and an adaptive display that automatically adjusts from 10Hz to 120Hz for a faster, smoother scrolling experience that is easy on the eyes while efficiently using the large 5000mAh battery. The Galaxy S21 Ultra was designed to be epic in every way and now experience the incredibly advanced Galaxy on the 5G leader in coverage.

Available in three memory variants, 12GB RAM/128 ROM, 12GB RAM/256GB ROM, or 16 GB RAM/512GB ROM.

Check out our latest Samsung deals on the newest Galaxy phones, tablets, and watches. Also, be sure to explore the awesome new Samsung Galaxy S22 5G, Galaxy S22+ 5G, and Galaxy S22 Ultra 5G, largest and fastest 5G Network.

Need help choosing your next Galaxy phone? Check out our complete Samsung Galaxy buyer’s guide or see our comparison of the new 22 vs S21.

What’s in the box

  • Samsung Galaxy S21 Ultra 5G
  • C to C USB Cable
  • SIM Pin/Ejector
  • Quick Start Guide
  • Safety and Warranty Information

Additional spec details

Battery Description
5000 mAh
Ports
USB Type-C
Connectivity
Wi-Fi 802.11a/b/g/n/ac/ax, UMTS,HSDPA,HSPA+,LTE,5G, Bluetooth 5.0, Satellite Capable
Processor
Qualcomm® Snapdragon™ 888 (5nm)
Operating System
Android
Ram
12 GB
Maximum Expandable Memory
0 GB
Wireless Network Technology Generations
4G, 4G LTE, 5G
Supported Email Platforms
Apple Mail, POP3, IMAP4, SMTP, Microsoft® Exchange, AIM, Yahoo!® Mail, GMail, AOL®
Hearing Aid Compatibility
M3, T3
WEA Capable
true
Mobile Hotspot Capable
true
Frequency
UMTS: Band I (2100), Band II (1900), Band IV (1700/2100), Band V (850), VIII (900); GSM: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz; 5G: n41, n71, n260, n261; LTE: 2, 4, 5, 12, 25, 26, 41, 46, 48, 66, 71; LTE Roaming: 1, 3, 7, 8, 13, 18, 19, 20, 28, 38, 39, 40
Display
6.8” WQHD+ Dynamic AMOLED Curved Display
Display resolution
3200 x 1440 pixels
Weight
8.07 Ounces
Length
6.5 Inches
Height
0.35 Inches
Width
2.98 Inches