Three Discount Code & Voucher Code December 2025

Smart Saving Tactics for Three Shoppers

Three's approach to savings is refreshingly straightforward - they reward both new customers and loyal fans with genuine value. Whether you're eyeing the latest Samsung Galaxy, hunting for Apple deals, or simply want to cut your monthly bills, Three's got multiple ways to help your money stretch further. From massive trade-in savings to half-price introductory offers, here's your complete guide to getting the best value from one of the UK's most customer-focused networks.

How to Use a Three Voucher Code

Getting your Three discount code to work properly is crucial for maximising your savings. Here's exactly how to apply your promotional codes without any hiccups:

1. Add your chosen device or plan to basket - Whether it's a bundle from £21 or Samsung deals from £30, make sure everything you want is in your cart first
2. Look for the promo code box at checkout - It's usually labelled 'Discount Code' or 'Voucher Code' and appears before you enter payment details
3. Enter your code exactly as provided - Three discount codes are case-sensitive, so double-check spacing and capitalisation
4. Verify the discount appears before completing payment - Your savings should show immediately; if not, try refreshing the page or contact Three's customer support

Pro tip: If you're a student, make sure to verify your status first through the Three website to unlock up to 20% off phones and SIMs. The student discount often stacks with other offers where eligible, giving you even better value.

Trade-In Deals That'll Make You Smile

Three's trade-in programme is where the real money-saving magic happens. If you're sitting on an older Apple device, you're looking at potential savings of up to £400 when upgrading to any of the latest models - that's the Pro, Pro Max, or the new Air variant.

The process is brilliantly simple. Three evaluates your current device's condition and applies the trade-in value directly to your new purchase. What makes this even better is that you're not just limited to Apple devices - the HONOR Magic V5 deal includes a tech bundle worth £400 plus an additional £225 in trade-in value.

• Latest Apple series - Up to £400 off with older Pro model trade-in
• HONOR Magic V5 - £400 tech bundle plus £225 trade-in credit
• Like New refurbished phones - Additional savings on pre-owned devices in excellent condition
• Anytime Upgrade - Existing customers can upgrade early and combine with trade-in savings

The beauty of Three's trade-in system is that it works alongside other promotions where eligible, so you're not forced to choose between different types of savings.

New Customer Perks Worth Switching For

Switching to Three comes with some seriously attractive welcome bonuses. New customers can claim up to £150 when moving to Three Home Broadband, making it one of the most generous switching incentives in the UK market.

But the savings don't stop there. Three's half-price introductory offers on premium devices are genuinely impressive:

• Samsung S25 Ultra - 12 months at half price, plus free Galaxy Chromebook Go 14" worth £399
• Latest Apple models - 12 months half-price pricing for new customers
• Unlimited data SIMs - 6 months at £13.50 (normally £27), increasing gradually to £30 by April

These aren't short-term teaser rates that disappear after a month. You're getting genuine long-term value that makes a real difference to your annual mobile spending.

Three+ Rewards App: Your Weekly Treat Machine

The Three+ rewards app is where Three really shows its personality. This isn't just another loyalty programme - it's a lifestyle perk that delivers tangible weekly benefits. Every week, you get £1 barista-crafted drinks at hundreds of local cafés across the UK. That alone could save you £50+ annually if you're a regular coffee drinker.

But the app goes much deeper than caffeine savings:

• Weekly treats - Rotating offers from major UK brands including discounts at popular retailers
• Entertainment perks - Presale tickets to festivals and gigs, plus money off West End shows
• Exclusive discount codes - App-only promotional codes that aren't available anywhere else
• Early device access - First dibs on new phone launches before general availability

The app also houses all of Three's latest voucher codes, making it your one-stop shop for savings. Regular rewards keep coming through the app, so it's worth checking weekly to see what's new.

Student Discounts That Actually Matter

Three's student programme is one of the most generous in the mobile industry, offering up to 20% off a wide range of phones and SIM plans. The verification process is straightforward - you'll need to confirm your student status through Three's website, but once approved, the savings are substantial.

Students can access:

• Up to 20% off subscriptions - Applies to monthly SIM plans and some device contracts
• Phone discounts - Significant savings on both Android and Apple models
• Stackable offers - Student discounts often work alongside other promotions where terms allow

The student discount is particularly valuable when combined with Three's bundle deals, like the bundles starting from £21 or Android options from £25.

Referral Programme: £40 for Everyone

Three's referral system is refreshingly generous - both you and your friend get £40 off to use on your next purchase when they sign up. It's a proper win-win situation that rewards you for spreading the word about Three's service.

The £40 credit can be applied to:

• New device purchases
• Plan upgrades
• Accessories and add-ons
• Monthly bill credits

There's no limit to how many friends you can refer, so if you're happy with Three's service, this can add up to significant savings over time.

Connect Together: Family Savings Made Simple

Three's Connect Together programme is perfect for families or households wanting to consolidate their mobile spending. You can save up to 20% on additional plans when you add extra lines to your account.

This works particularly well when combined with Three's other offers. For example, you could start with a half-price Samsung S25 Ultra plan as the primary account holder, then add family members at 20% off their normal rates. The savings compound quickly across multiple lines.

Key Worker Recognition

Three recognises key workers with a dedicated 10% discount on full-price products and plans. This applies to NHS staff and other essential workers, providing ongoing savings rather than just a one-time offer.

The key worker discount can be combined with other eligible promotions, and it applies to both devices and monthly plans. It's Three's way of saying thank you to those who keep essential services running.

Premium Perks and Free Delivery

Three keeps things simple with free delivery on orders over £80, which most phone purchases will easily meet. But the real premium perks come with specific device purchases:

• Apple Watch deals - 3 months free Apple Fitness+ with Apple Watch 11, Ultra 3, or SE 3 purchases
• Samsung Galaxy perks - Free Galaxy Chromebook Go 14" (worth £399) with S25 Ultra
• Enhanced network access - Automatic access to Vodafone's network for better coverage at no extra cost

That last point is huge - you're essentially getting two networks for the price of one, which dramatically improves your coverage and connection reliability across the UK.

Bundle Deals That Pack a Punch

Three runs regular promotional campaigns that coincide with major shopping periods. Their bundle deals are particularly attractive:

• Samsung bundles - Starting from £30 with various accessories and plan combinations
• Apple bundles - From £21 with competitive monthly rates
• Android bundle deals - Starting at £25 for budget-conscious shoppers

The timing of these offers often aligns with new device launches, so you can get the latest tech with immediate savings rather than waiting months for price drops.

Making the Most of My3 Account Benefits

Your My3 account is more than just a billing portal - it's your gateway to exclusive offers and personalised deals. By signing up for marketing texts and emails through your My3 account, you'll receive regular promotional codes and stay updated on the latest offers.

Existing customers can log into their My3 account to see exclusive upgrade offers that aren't available to new customers or the general public. These personalised deals often provide better value than standard promotions.

Three's approach to customer retention is smart - they reward loyalty with genuine perks rather than just hoping you'll stick around. The combination of the Three+ app, My3 account benefits, and exclusive upgrade offers creates a compelling reason to stay with Three long-term.