Yes you can, but the terms and conditions for each of our discounts are different and it may not always be applicable.
How to redeem Three promo codes
1. Add your products to the basket
Double-check your order is eligible for this promo code.
2. Enter your promo code into the box
You’ll get a message to say if the code has been accepted.
3. Check out and enjoy
You got the deal.
Want to get more promo codes?
Visit your My3 account and make sure you’re signed up to our marketing texts and emails.
What Three promo codes and offers are available?
Students save up to 20%
Find a special deal on a range of phones and SIMs with our discount code.
More ways to save with Three
Ways to save
Anytime Upgrade
Stay up to date with the latest tech. You’ve got the option to upgrade to a new phone or other device after 90 days without paying any upgrade fees.
Trade in your old tech
You can trade in your old phone and use the money to reduce the cost of a new device or to help pay off your old device plan. You can also trade in tablets and wearables too.
Choose Like New
Our refurbished phones go through rigorous 65-point quality checks to make sure they look and work like they’re fresh out the box.
Save up to 20% on additional plans
Bring your whole family over to Three. With Connect Together, you can save up to 20% on each new plan you add, including home broadband.
Enjoy discounts with Three+
Get amazing offers from brands you love, like Cineworld, Caffè Nero, Uber Eats and more. You can even save at your local takeaway too.
Have you tried 5G yet?
Discover dazzling next-generation speeds. Game in real-time. Download in seconds. Stream without buffering. And so much more.
Why choose Three?
Ookla® Speedtest Intelligence® data, 1H 2025. All rights reserved.
Visit speedtest.net/awards/fastest-5G to find out more.
Frequently asked questions
You can only use one promo code at a time, but you may be able to combine it with other discounts that are available.
If a code isn’t working, we’ll usually tell you the reason why. Often, it’s because the code has expired, or it isn’t eligible for the items in your basket.
Yes, we often have broadband and SIM promo codes. Keep a lookout for the latest codes online, on the Three app, and via text or email.
We hope to offer these very soon, so keep your eyes peeled. We do have student discounts available, where you can save up to 20%.
Some of our codes will work in both, but some will be exclusive to either online or Three stores. Make sure you check the promo code’s terms.
This will depend on the promo code terms. Some codes may be device specific, others may be applicable on a variety of different items.
We sometimes offer promo codes exclusively for Samsung devices. Make sure you’re signed up to our marketing emails and texts, and have the Three app, to get our latest codes first.
We do sometimes have Apple discounts available. Make sure you’re signed up to our marketing emails and texts, and have the Three app, to get our latest codes first.