Samsung

Galaxy Watch9 40MM

Galaxy Watch9 40MM AI Badge

Customize your device

Same-day

Delivery to sddZipcode

or get it shipped by selecting Ship to me in cart.

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.

Starting at $0

The SIM stores your account information and connects your device to the T‑Mobile network.

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 deviceMarketingName needs a physical SIM card

After checkout, you'll receive a free SIM card to get your device connected.

Contact your current carrier to make sure your device is unlocked.

Compatibility details

Get it now

 Pick up in-store

or get it shipped by selecting Ship to me in cart.

Device options

Loading color options, please wait
Loading
  • Loading
    Loading
  • Loading
    Loading
  • Loading
    Loading
  • Loading
    Loading

Due today: dueToday + tax & other charges

Full price: payInFull + tax

Pricing when you choose familyNameProspect plan

Plus up to $35 device connection charge

If you select to pay monthly and cancel wireless service, the remaining balance on the device becomes due. For well-qualified buyers, 0% APR. Qualifying service required.

You already have the maximum number of lines in your cart.

Go to cart

You have reached the maximum number of non-phone lines.

Go to cart

You have reached the maximum number of phone lines.

Go to cart

Deliver to currentZipCode

Already a T-Mobile customer?

Welcome to T-Mobile (new customer)

If you're an existing customer, please

Adding a line to your account

model | phoneNumber

jumpEligibleText|html

Phone number

Do you want keep your number, or get a new one?

Phone number

Enter the phone number you want to transfer

Transfer Metro number

Choose which line you'd like to transfer from Metro to T-Mobile.

This number will remain active on Metro until you set up your new device.

Keep your phone number

pillTemplate|html Transferring: phoneNumberTemplate|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.

This number will remain active on your current device. Your mobile expert will help you transfer your number
to T-Mobile.

Phone number

pillTemplate|html This number is eligible: phoneNumberTemplate|html

This number will remain active on your current carrier until you set up your new device.

Getting a new number

Eligible trade-in device

Your trade in device

marketingName 

firstName phoneNumber

Device Condition
selectedDeviceCondition|html

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.

Trade-in device

Trade in your device and save, based on its condition and model.

Have a damaged device? You may still qualify for a promotion.

Skip trade-in

By skipping trade in, your monthly device payment is now price

Add a trade-in and get this device for only discountPrice

Want to trade in?

currentDevice

firstName msisdn

Eligible trade-in device

Your trade in device

marketingName 

firstName phoneNumber

Device Condition
selectedDeviceCondition|html

Estimated one-time trade-in credit: $oneTimeCredit

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.

Trade-in skipped

Select a trade-in device

Confirm your trade-in device

Your trade in device

marketingName 

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.

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. 

Phone protection

Add worry-free protection to your brand new phone.

Showing device protection for 

75% of people have had their phone lost, broken or damaged

Assurant, 2026

Can't load device protection right now

   Please check back later. if you' re still having trouble adding device protection, give us a call at 1-800-937-8997.

Confirm device eligibility

Does this device meet all of the following conditions?

  • The device stays powered on
  • The screen on my device is free of cracks (scratches and scuffs are acceptable)

Protection added

deviceName

You're all set! Your phone is now eligible for coverage—so you can stay protected from accidental drops, cracks, and more.

Device protection unavailable

Your device has damage that disqualifies the device from coverage.

You’re protected

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

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/month from current protection plan

priceDifference/month from current protection plan

New price: price/month + tax

Did you know?

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

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.

Must-have accessories

Showing items for delivery to currentZipCode

If you cancel wireless service, remaining balance on accessory becomes due. For well qualified buyers. 0% APR. 

Similar products

Loading
Loading
Loading
Loading
Loading
Loading
Loading
Galaxy Watch nine displays a vitals dashboard showing two health metrics out of range for quick wellness insights.
VITALS

Track health patterns in your sleep with Vitals.

Stay aware of the subtle changes in your body with Vitals it tracks health metrics while you sleep, catches shifts from your usual patterns, and provides tailored guidance based on the insights.

Galaxy Watch nine displays an incoming call, letting you answer calls from your wrist while out for a run with your dog.
CELLULAR CONNECTIVITY

For the moments when your phone stays at home.

Jogging in a new city? You can go light with your Galaxy Watch9 while still staying connected to what matters. With full LTE connectivity, your GPS is right on your wrist. Want to make sure that the fam is doing okay back home? Call or text right from your wrist. The cellular connectivity keeps you on the grid, even when you don't have your phone on you.

Person wearing Galaxy Watch nine in bed displays sleep tracking scores.
SLEEP TRACKING

Track your nights. Own your days.

No two sleepers are alike, so Galaxy Watch9 gives personalized recommendations and habit-building guidance with Advanced Sleep Coaching. Plus, Bedtime Guidance helps you find your optimal bedtime so you can wake up feeling refreshed. Watch9 also helps detect moderate-to-severe sleep apnea to help with a better understanding of your wellness.

Galaxy Watch nine displays a blood pressure reading.
BLOOD PRESSURE

Check your blood pressure, right from your wrist.

Check your blood pressure anytime, anywhere with your Galaxy Watch9. Simply calibrate the Watch9 using a blood pressure cuff (sold separately) to measure your systolic and diastolic pressure. Then, use the readings on the Samsung Health Monitor app to help monitor your blood pressure as part of maintaining a healthy lifestyle. Check for changes in your heart’s activity to make informed decisions, such as adjusting your diet or scheduling a visit to the doctor’s office.

Person wearing Galaxy Watch nine with a white band, highlighting a slim, comfortable design for all day wear.
COMFORTABLE DESIGN

Comfortable wear, forget it’s there.

A watch meant for daily health tracking should be comfortable enough for daily wear. So, Galaxy Watch9 comes with an unbelievably soft sports band with a breathable air pocket design. Whether you are doing your morning stretches or getting your good night's sleep, you can enjoy the barely there feel that never gets in the way of your goals.

Key features

438 x 438 pixels

1.3'' Super AMOLED Sapphire Glass Display

3.8 Hours Talk Time

3.9 Days Standby Time

Other features

  • Vitals
  • Fitness Index
  • Raise to Talk
  • Heart Health Score
  • Sleep Tracking
  • Blood Pressure Monitoring
From your first morning stretch to "goodnight", Galaxy Watch9 makes staying on top of your everyday health easy, especially with its comfortable design that's perfect for daily wear.

Stay aware of the subtle changes2 in your body with Vitals,1 improve your sleep schedule with Sleep Coaching3 and keep close tabs on your heart every day with the Heart Health Score,4 that also comes with personalized guidance.5 Got a fitness goal for yourself? Fitness Index can be your personal coach by recommending programs6 tailored to you. And through your daily chores when you need quick AI assistance,7 you can just raise your wrist and talk naturally – no wake phrase needed.

Prioritizing your health gets easier when managing daily tasks is easy. With Watch9 you can easily access your wallet to use Tap to Pay,8 control your camera, answer calls9 from your wrist and more.

Galaxy Watch9 helps you stay connected, stay motivated and get closer to your health and fitness goals.

1The Vitals software functions are not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease.
2Requires a compatible Samsung Galaxy phone, Health app and Samsung account. Requires initial setup wearing watch for 7 out of 28 nights.
3Requires a compatible Samsung Galaxy phone, Health app and Samsung account. Some features require initial setup process.
4The Heart Health Score software functions are not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease.
5Requires a compatible Samsung Galaxy phone, Health app and Samsung account. Requires initial setup wearing watch for 24 hours (including awake and asleep).
6Requires initial setup with compatible Android phone, Samsung account and Samsung Health app. Premium content (optional) powered by iFit requires paid subscription.
7Setup required. Check responses. Compatibility and availability varies. Google and Gemini are trademarks of Google LLC.
8Requires a compatible NFC card from a participating bank. See Samsung.com Wallet FAQ for more information.
94G LTE stand-alone connectivity only available on Galaxy Watch LTE specific models and Galaxy Watch Ultra models. Requires initial pairing with an eligible Android smartphone and separate qualifying wireless plan. Your carrier may not support stand-alone voice calling, or support may be available only in certain areas. Please check with your carrier for more information. Stand alone functionality limited if paired phone is not powered on or connected to a wireless network.

What’s in the box

  • Samsung Galaxy Watch9 - 40MM
  • Charging Pad/Cable
  • Strap
  • Quick Start Guide

Additional spec details

Battery Description
390 mAh
Ports
Wireless Charging
Connectivity
Bluetooth 6.0, Wi-Fi 2.4GHz and 5GHz, NFC, LTE
Processor
Qualcomm SW6100
Operating System
Wear OS
Ram
2 GB
Maximum Expandable Memory
0 GB
Wireless Network Technology Generations
4G LTE
Supported Email Platforms
Apple Mail, POP3, IMAP4, SMTP, Microsoft® Exchange, AOL, AIM, Yahoo!® Mail, Gmail
WEA Capable
true
Mobile Hotspot Capable
false
Frequency
UMTS: Band I (2100), Band II (1900), Band IV (1700/2100), Band V (850), Band VIII (900); LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66, 71
Weight
1.11 Ounces
Length
0.34 Inches
Height
1.68 Inches
Width
1.59 Inches

Key features

438 x 438 pixels

1.3'' Super AMOLED Sapphire Glass Display

3.8 Hours Talk Time

3.9 Days Standby Time

Other features

  • Vitals
  • Fitness Index
  • Raise to Talk
  • Heart Health Score
  • Sleep Tracking
  • Blood Pressure Monitoring
From your first morning stretch to "goodnight", Galaxy Watch9 makes staying on top of your everyday health easy, especially with its comfortable design that's perfect for daily wear.

Stay aware of the subtle changes2 in your body with Vitals,1 improve your sleep schedule with Sleep Coaching3 and keep close tabs on your heart every day with the Heart Health Score,4 that also comes with personalized guidance.5 Got a fitness goal for yourself? Fitness Index can be your personal coach by recommending programs6 tailored to you. And through your daily chores when you need quick AI assistance,7 you can just raise your wrist and talk naturally – no wake phrase needed.

Prioritizing your health gets easier when managing daily tasks is easy. With Watch9 you can easily access your wallet to use Tap to Pay,8 control your camera, answer calls9 from your wrist and more.

Galaxy Watch9 helps you stay connected, stay motivated and get closer to your health and fitness goals.

1The Vitals software functions are not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease.
2Requires a compatible Samsung Galaxy phone, Health app and Samsung account. Requires initial setup wearing watch for 7 out of 28 nights.
3Requires a compatible Samsung Galaxy phone, Health app and Samsung account. Some features require initial setup process.
4The Heart Health Score software functions are not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease.
5Requires a compatible Samsung Galaxy phone, Health app and Samsung account. Requires initial setup wearing watch for 24 hours (including awake and asleep).
6Requires initial setup with compatible Android phone, Samsung account and Samsung Health app. Premium content (optional) powered by iFit requires paid subscription.
7Setup required. Check responses. Compatibility and availability varies. Google and Gemini are trademarks of Google LLC.
8Requires a compatible NFC card from a participating bank. See Samsung.com Wallet FAQ for more information.
94G LTE stand-alone connectivity only available on Galaxy Watch LTE specific models and Galaxy Watch Ultra models. Requires initial pairing with an eligible Android smartphone and separate qualifying wireless plan. Your carrier may not support stand-alone voice calling, or support may be available only in certain areas. Please check with your carrier for more information. Stand alone functionality limited if paired phone is not powered on or connected to a wireless network.

What’s in the box

  • Samsung Galaxy Watch9 - 40MM
  • Charging Pad/Cable
  • Strap
  • Quick Start Guide

Additional spec details

Battery Description
390 mAh
Ports
Wireless Charging
Connectivity
Bluetooth 6.0, Wi-Fi 2.4GHz and 5GHz, NFC, LTE
Processor
Qualcomm SW6100
Operating System
Wear OS
Ram
2 GB
Maximum Expandable Memory
0 GB
Wireless Network Technology Generations
4G LTE
Supported Email Platforms
Apple Mail, POP3, IMAP4, SMTP, Microsoft® Exchange, AOL, AIM, Yahoo!® Mail, Gmail
WEA Capable
true
Mobile Hotspot Capable
false
Frequency
UMTS: Band I (2100), Band II (1900), Band IV (1700/2100), Band V (850), Band VIII (900); LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66, 71
Weight
1.11 Ounces
Length
0.34 Inches
Height
1.68 Inches
Width
1.59 Inches

If you select to pay monthly and cancel wireless service, the remaining balance on the device becomes due. For well-qualified buyers, 0% APR. Qualifying service required.