When you click on one of our offers and make a purchase, we may earn a small commission.
O2 Discount Codes

O2 Discount Codes & Vouchers

Save 50% in December 2024

The UK's second-largest mobile phone provider, O2 mixes affordable contracts with the latest technology. Offering a range of perks for loyal customers, it's a brand that treats shoppers well - especially when they shop for new phone contracts or broadband with an O2 voucher deal.

Up to 25% off Airtime Plans with O2 Open Sign-Up

Valid until 31/12/2024

O2 Discount Code: 50% off Selected Samsung Branded Cases with Purchase of any Samsung Handset

No expiry date

Receive 30% off 25W Super Fast Charger Adapter with any Samsung Handset Orders at O2

Valid until 18/12/2024

Get 20% off with UNIDAYS at O2

Valid until 31/12/2024

Major Bargain: Free Delivery

Just Tested

Codes Hand Tested DailyAll our codes are manually tested

Never miss a O2 voucher code again!

Unsubscribe at any time

100% tested

Free

By registering/subscribing, you agree to the Terms & Conditions and Privacy Policy.

Give These Just-Expired O2 Voucher Codes & Deals a Go

Feel free to try one of these O2 discount codes that may still work.

Receive £100 off with this Discount Code

Valid until 23/10/2024

Receive 40% off at O2

Valid until 31/07/2023

O2 Discount Code: Get £300 off Galaxy S23 Ultra Orders

Valid until 23/08/2024

Get 30% off Selected Samsung Branded Power with Purchase of any Samsung Handset at O2

Valid until 21/08/2024

Receive £200 off Galaxy S22 Orders with this Discount Code

Valid until 04/08/2024

Take advantage with Up to £335 off on iPhone 15 Pro Max 256GB + £30 Upfront Cost

Valid until 29/07/2024

Top Voucher: £300 off Samsung S23 Ultra Orders

Valid until 28/07/2024

50% off Phone Cases with Purchase of Samsung Handset Orders at O2

Valid until 25/07/2024

Top Deal: £200 off Samsung Galaxy S23 Plus at O2

Valid until 20/07/2024

Receive 30% off Samsung Handsets at O2

Valid until 19/07/2024

O2 Voucher: £200 off the Upfront Cost of Galaxy S22 128GB

Valid until 12/07/2024

Are we missing a voucher?

Submit new Voucher

You may also like these vouchers

Get 10% off with Newsletter Sign Up at Adanola

Valid until 31/12/2024

Get 22% off at LOOKFANTASTIC

Just Tested

Major Bargain: Up to 50% off selected Orders over £20

Valid until 31/12/2024

Cult Beauty Discount Code: 15% off Everything

No expiry date

Explore All Valid O2 Deals & Sales for December 2024

Discount

O2 Voucher Details

Expires

25%

Up to 25% off Airtime Plans with O2 Open Sign-Up

31 December 2024

50%

O2 Discount Code: 50% off Selected Samsung Branded Cases with Purchase of any Samsung Handset

No expiry date

30%

Receive 30% off 25W Super Fast Charger Adapter with any Samsung Handset Orders at O2

18 December 2024

20%

Get 20% off with UNIDAYS at O2

31 December 2024

Deal

Major Bargain: Free Delivery

31 December 2024

Useful tips and information

O2 Voucher Codes

About O2

It’s easy to keep connected with O2. A staple mobile and broadband provider in the UK, O2 provides a variety of mobile plans, SIM-only deals, and broadband packages. They also offer a selection of the latest smartphones, tablets, and accessories to keep you connected wherever you are. You can save on your purchases or plans with an O2 promo code.

How to use your O2 voucher code

Using an O2 voucher code is simple and can help you save on your next purchase. Follow these steps to apply your discount:

  1. Browse our selection of O2 voucher codes and choose the one that best suits your needs.

  2. Visit the O2 website and add your desired items or plans to your shopping basket.

  3. Proceed to checkout and look for the promo code box.

  4. Enter your O2 voucher code and click "Apply".

  5. Complete your purchase and enjoy your savings!

What to do if your O2 discount code isn’t working

If your O2 discount code isn’t working, there are a few steps you can take to resolve the issue:

  • O2 voucher codes often have time limits, so be sure to purchase O2 products before the deadline arrives!

  • It's essential to enter every O2 discount code accurately. If the code doesn't work, you may have accidentally erased a character. Try the Voucherbox code again to see if it works.

  • Review the terms and conditions of your O2 voucher again. Can you locate any restrictions that keep the code from functioning? A code only valid for existing customers, for example?

  • Is there a minimum order you didn't reach? Larger discounts often come with such a requirement.

  • O2 promo codes are often restricted to certain models, brands, or categories. Make sure you've picked a device that fits the deal.

O2 student discount

Students can stay connected with 20% off their airtime plan when they buy a connected phone or tablet. Additionally, students can get 20% off select accessories. To claim these discounts, verify your student status through UNiDAYS or TOTUM and enjoy great savings on your mobile needs.

Birthday discount

Unfortunately, O2 does not offer a specific birthday discount. However, be sure to check our site regularly for the latest O2 deals and offers to celebrate your special day with savings.

Can I benefit from any existing customer deals?

Yes! O2 values their existing customers and offers the Multisave program. This allows you to get 20% off an Airtime Plan for every new eligible Pay Monthly connection you add to your account. You can add up to 20 Multisave discounts, making it a great way to save if you have multiple devices or family members to connect.

First order discount

Currently, O2 does not offer a first order discount. However, there are plenty of other ways to save with O2 by using our voucher codes and keeping an eye on their latest promotions and deals.

Does O2 offer a blue light discount?

Yes, O2 offers a Blue Light discount for NHS workers. To learn more about the O2 NHS discount and how to claim it, head to the Blue Light Card website.