T-Mobile Fiber Promo Codes + Cashback in November 2026
Today's best selection of T-Mobile Fiber coupons, tested by our team
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5 active offers1 offer added last week
Best Offer
$500 CREDIT
Up to $500 Credit with Friend Referrals
All year round
Earn a $50 credit with each successful referral. You can successfully refer up to 10 friends per calendar year.
$300 BACK
Up to $300 Back on Select Plans
Offer applied automatically with the Fiber 5 Gig plan, earning two months free plus a $300 virtual prepaid gift card. New customers only. Cannot combine with other offers. While supplies last.
$35 Cashback
Earn $35 Cashback on Your Orders
All year round
How does T-Mobile Fiber cashback work?
- To be eligible for cashback, you must begin your purchase with an empty shopping cart.
- Cashback can only be combined with offers and/or coupon codes published on the Coupons.com website labeled with a "+ cashback" tag.
- Cashback is earned on the qualifying purchase total after any discounts and before any fees, taxes, order protection, or shipping and handling are applied.
- Cashback is not eligible on the purchase of gift cards.
- Order details will be available in your account within 72 hours of purchase. This is an update to your account information only, separate from when you receive your payment.
- Cashback will be voided on canceled, returned, and/or partially returned purchases.
NO FEES
No Extra Costs, Equipment & Installation Included
Ends in 30 days
Get equipment and installation included with no extra costs. Multiple uses allowed. Cannot combine with other offers. While supplies last.
PRICE GUARANTEE
5 Year Price Guarantee
Ends in 24 days
Get 5 year price guarantee. Multiple uses allowed. Cannot combine with other offers. While supplies last.
FREE MONTHS
Up to 2 Months Free with Select Plans
Get one month free with One Gig plan or 2 months free with 2 Gig plan. New customers only. One per customer. Cannot combine with other offers. While supplies last.
Missed these coupons?
Our team has found the below offers to no longer be valid
FREE PLAN
Two Free Months on Select PlansFREE TRIAL
Free 1-Month Subscription on Select PlansEnjoy a free 1-month subscription on select T-Mobile Fiber plans when signing up through the official website. The offer applies to eligible home internet packages available in participating service areas and may require new customer activation or account eligibility verification. Additional fees, equipment requirements, or service terms may apply depending on the selected plan. T-Mobile may modify or end the promotion at its discretion without notice.
$100 BACK
Free $100 Prepaid Card on 2 Gig PlansEnjoy a free 1-month subscription on select T-Mobile Fiber plans when signing up through the official website. The offer applies to eligible home internet packages available in participating service areas and may require new customer activation or account eligibility verification. Additional fees, equipment requirements, or service terms may apply depending on the selected plan. T-Mobile may modify or end the promotion at its discretion without notice.
Frequently asked questions about T-Mobile
How to save at T-Mobile Fiber
Take advantage of the new customer offer if you want the Fiber 2 Gig plan. You’ll get two months free and a $100 virtual prepaid gift card plus the fastest and strongest wifi speeds compared to the other plans.
Savings at a glance
Refer a friend
Give $50, get $50Shipping
Free shipping and installationNew customer
$100 back with Fiber 2 GigLoyalty
Weekly freebies, savings and sweepstakes with T-mobile TuesdaysOur verdict
Sign up for auto-pay to get $10 off your monthly bill across all plans.
Insider tips
App perks
Shop, compare plans, manage devices, and get exclusive benefits and perks
Stack this combo
2 months free + $100 back + $10 off with autopay Fiber 2 Gig plan
T-Mobile Membership
Dining and travel rewards and savings on live events with T-Mobile Tuesdays