Add a line and save more. Add a line and save more.
Easily open a phone line on your account. Add a family member or friend—the more lines you add, the more you save.
Add a line in the T-Life app.
Download the T-Life app and easily add a line to your plan, plus shop deals, pay your bill, and lots more.
Shop deals
Smartwatch deals.
Get Apple Watch SE 3 40mm On Us .
Get Apple Watch SE 3 40mm On Us .
Get Apple Watch SE 3 40mm On Us .
Via 24 monthly bill credits when you add a watch line on Watch Plan Plus.
Get up to $400 off Pixel Watch 4. Get up to $400 off Pixel Watch 4. Get up to $400 off Pixel Watch 4.
Precision crafted. Performance ready. With 36 monthly bill credits when you add a qualifying watch line.
Get Galaxy Watch8 40mm On Us .
Get Galaxy Watch8 40mm On Us .
Get Galaxy Watch8 40mm On Us .
More than a watch – it’s a health coach and tracker that fits your wrist and lifestyle. Get one On Us via 36 monthly bill credits when you add a line on an eligible wearable plan.
Get up to $400 off select Samsung watches. Get up to $400 off select Samsung watches. Get up to $400 off select Samsung watches.
Whether you’re focused on productivity, health or performance Samsung has a Galaxy Watch for you. Now get up to $400 off via 36 monthly bill credits when you add a line on an eligible wearable plan.
Get one On Us .
Get one On Us .
Get one On Us .
Via 24 monthly bill credits when you activate a new line on a SyncUP Kids Watch Plan. Plus $10 device connection charge.
Kid-friendly in so many ways
Apple Watch For Your Kids. Apple Watch For Your Kids. Apple Watch For Your Kids.
Rest easy knowing you can call, text, or check your kids’ location with Apple Watch.
Now kid-ready
Made for kids and your peace of mind. Made for kids and your peace of mind. Made for kids and your peace of mind.
Galaxy Watch8 for Kids is loaded with features that give parents valuable ways to help guide kids safely into the digital world.
If you cancel entire account before receiving 24 credits, credits stop and balance on required finance agreement is due; for phones, contact us. Bill credits end if you pay off device early. For well-qualified customers, plus tax & $35 device connection charge.
Tablet, hotspot deals and more.
Get the new
On Us .
Get the new
On Us .
Get the new
On Us .
Modern, sleek, and refined. Via 24 monthly bill credits when you add a new qualifying tablet line.
Get iPad (A16) for only $99. Get iPad (A16) for only $99. Get iPad (A16) for only $99.
Via 24 monthly bill credits when you add a line on a Tablet Unlimited Plus plan.
Get 50% off Galaxy Tab S10 FE 5G. Get 50% off Galaxy Tab S10 FE 5G. Get 50% off Galaxy Tab S10 FE 5G.
Via 24 monthly bill credits when you add a line on a qualifying tablet plan.
Get the Galaxy Tab A9+ On Us .
Get the Galaxy Tab A9+ On Us .
Get the Galaxy Tab A9+ On Us .
Via 24 monthly bill credits when you add a new qualifying tablet line.
Get the SyncUP TRACKER 2 On Us .
Get the SyncUP TRACKER 2 On Us .
Get the SyncUP TRACKER 2 On Us .
Via 24 monthly bill credits when you add a qualifying line.
Stay connected on the go with Linkport. Stay connected on the go with Linkport. Stay connected on the go with Linkport.
Get Linkport On Us via 24 monthly bill credits when you add a qualifying line and enjoy secure 5G connectivity when you’re on the go.
Keep tabs on your car and your crew. Keep tabs on your car and your crew. Keep tabs on your car and your crew.
Get SyncUp DRIVE® for FREE via 24 monthly bill credits when you add a qualifying line. Enjoy real-time alerts, in-car Wi-Fi , and peace of mind when you’re on the go. Requires capable phone & app for some features.
If you cancel entire account before receiving 24 credits, credits stop and balance on required finance agreement is due; for phones, contact us. Bill credits end if you pay off device early. For well-qualified customers, plus tax & $35 device connection charge.
Save more when you add more lines.
With many of our plans, you can watch your savings add up when you add more lines.
Experience More
AutoPay discount using an applied + up to $35 device connection charge per line.
Number of Lines
Price Per Line
First line
$85/line
+ taxes and fees
Add a line
$70/line
+ taxes and fees
Third line
$46.67/line
+ taxes and fees
Fourth line
$40/line
+ taxes and fees
Fifth line
$36/line
+ taxes and fees
Experience Beyond
AutoPay discount using an applied.
Number of Lines
Price Per Line
First line
$100/line
+ taxes and fees
Add a line
$85/line
+ taxes and fees
Third line
$56.67/line
+ taxes and fees
Fourth line
$53.75/line
+ taxes and fees
Fifth line
$52/line
+ taxes and fees
Prices shown include AutoPay discount excludes taxes, surcharges, and fees which vary by location. Autopay requires bank account or debit card, on up to 8 lines, otherwise $5 more per month per line. Want to add more than 5 lines? Contact us.
Bring anyone. Savings for everyone.
Add anyone to your existing plan and watch the savings grow. A family member, a neighbor, a friend, or even your fifth grade teacher. The more you bring, the more you all save.
T-Mobile makes it easy to add a line to your account.
Add a line with a purchase of a device. Add a line with a purchase of a device. Add a line with a purchase of a device.
It's not just phones. You may also purchase a watch or tablet too.
Add a line and bring your own device. Add a line and bring your own device. Add a line and bring your own device.
You don't have to buy something new to add a line. But we do have plenty of great deals if you're looking.
Got Questions?
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The Billing Responsible Party and Authorized Users may add lines to existing accounts.
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You can add a new line to your
T-Mobile account by logging into the T-Life app, selecting “shop” and then selecting “add a line to your account in T-Life”. From here, you can select which device you would like to purchase for the new line or choose ‘Bring your own device’ and then complete your transaction. -
The number of lines you can add depends on the rate plan you are on. Check T-Life or work with your Mobile Expert to determine how many lines you are eligible to have.
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Adding a line means you are adding another line of voice or mobile internet service with a new phone number to your current
T-Mobile account. -
The cost of your new line depends on the rate plan you are on. Check T-Life or work with your Mobile Expert to determine how many lines you are eligible to have.
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We always have great offers for customers looking to add new lines to their account. Follow this link to see our current offers: https://www.
t-mobile .com/switch/free-cell-phone-with-plan. -
The SIM card, including a Nano SIM card with micro- and standard-SIM adapters and eSIM, is how your phone gets its assigned phone number. The card and eSIM work with an unlocked,
T-Mobile compatible GSM phone. There is no SIM card activation required. If you receive a SIM card in the mail, simply slip it into your phone and you're ready to go. If your new device uses an eSIM, follow the prompts when turning on your new device for the first time to set it up. If you are upgrading your device and intend to use your same phone number, move your old SIM card to your new device. To activate your device, dial 1 (855) 980-3165 from a separate phone to contactT-Mobile customer service. -
The card works with an unlocked,
T-Mobile compatible GSM phone. -
You can visit Bring Your Own Unlocked Phone | IMEI Compatibility Check & Activate Online |
T-Mobile or work with your Mobile Expert to determine if your device isT-Mobile compatible. -
It is possible to keep the number you already have from another wireless or landline carrier. First, check if your existing number is eligible for transfer to
T-Mobile . If it is, simply follow the on-screen instructions displayed during check-out to authorize the transfer. We'll do the rest. In rare circumstances, we are unable to transfer a number to our network—usually because we don't have a transfer agreement with the original service provider. Be sure to keep your old phone and old account until your number is fully activated on your newT-Mobile account for seamless service. -
Yes.
T-Mobile 's online checkout has been verified by VeriSign. The information you submit is encrypted to provide the highest level of security before it's transmitted toT-Mobile . -
Transferring your phone number can happen within minutes, but can take up to 24 hours. If there is a problem with your phone number transfer, a member of our team will contact you within 24 hours.
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Yes, if your device uses technology that’s compatible with the
T-Mobile network. Refer to the device manufacturer’s website for details. If you have questions, take your device to the nearestT-Mobile store, message us on this page, or call us at 1-855-980-3165.
