£870 OFF Three Vouchers | Verified

Top Three Vouchers for February 2026

Top Offer

870OFF

Save Up to £870 on iPhone 14 Pro

Shop and save at Three. Enjoy massive savings of up to £870 on select iPhone 14 Pro models. Get your upgrade for less

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50OFF

Save £50 on a Three SIM Plan

Switch to a Three SIM and enjoy half price for 6 months, saving you £50. Plus, get £100 cashback. Shop and save today

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Simple Ways to Save at Three

Saving money on your phone bill doesn't have to be complicated. Here are a few easy places to start.

Check for student or NHS discounts: Three offers special plans for students and NHS workers, which can save you a good amount each month.
Look at SIM-only plans: If you already have a phone you're happy with, switching to a SIM-only plan is one of the easiest ways to cut your bill in half.
Use price comparison: Three has a tool on their site to compare their plans. It's a quick way to see if you're on the best deal for your needs.
Buy refurbished: You can get nearly-new phones for much less from Three's refurbished section, and they come with a warranty.

Best Times to Shop

Timing your purchase can lead to bigger savings. Keep an eye out during these periods.

Seasonal Sales: Like most retailers, Three often has big promotions during Black Friday, Cyber Monday, and the January sales.
Back to School: Late summer is a great time to find deals,

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Three Coupons FAQ

How do I apply a Three voucher or promo code at checkout?

Simply add your items to the basket and proceed to checkout. On the payment page, you will see a field labelled "Promo Code", "Voucher Code", or "Discount Code". Enter your code here and click 'Apply'. The discount will be instantly deducted from your total order value.

Where can I find valid Three discount codes and special offers?

Check the official Three website's 'Offers' or 'Store Vouchers' page for the latest promotions. You can also sign up for the Three newsletter and follow their social media channels to receive exclusive discount codes and be alerted to new sales and special offers.

Why is my Three voucher or promo code not working?

Your code may have expired, reached its usage limit, or may not be valid for the items in your basket. Please check the code's spelling, its terms and conditions for eligible products, and its validity period. Some discount codes cannot be used in conjunction with other offers.

Do Three vouchers and discount codes work for mobile phone upgrades?

Yes, many Three promo codes and special offers can be applied when upgrading your mobile phone. During the upgrade process on the Three website, look for the promo code field at checkout. Always check the specific terms of the voucher to confirm it is valid for device upgrades.

Can I use a Three discount code with other promotions like free delivery?

Often, yes. Many Three voucher codes can be combined with ongoing promotions such as free delivery. However, some exclusive offers may be restricted. The checkout system will automatically apply the best available combination, or it will state if codes cannot be used together.

Are there any student discounts available at the Three store?

Yes, Three offers exclusive student discounts and promo codes. To access these, you typically need to verify your student status through a partner service like Student Beans or UNiDAYS. Once verified, you can unlock special offers on devices and plans.

How long are Three promo codes and vouchers valid for?

The validity period varies for each special offer. Most Three discount codes and vouchers are valid for several weeks or months, but some flash sales may only last a few days. Always check the expiry date in the offer's terms and conditions to avoid disappointment.

Does Three offer a senior discount or voucher for older customers?

Three does not currently have a nationwide senior discount scheme. However, they frequently run general promotions and special offers that all customers, including seniors, can use. Check the main Three offers page regularly for the latest available voucher codes and discounts.