O2 Discount Codes & Vouchers
Up to 25% off Airtime Plans with O2 Open Sign-Up
Valid until 31/12/2025
Receive 50% off Selected Samsung Branded Cases with Purchase of any Samsung Handset at O2
Valid until 17/07/2025
O2 Voucher: 30% off Selected Samsung Handset
Valid until 17/09/2025
Get 20% off with UNIDAYS at O2
Valid until 31/12/2025
Major Bargain: Free Delivery
Valid until 31/12/2025
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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 05/07/2025
Receive 40% off at O2
Valid until 31/07/2023
O2 Voucher: 30% off Samsung Handset
Valid until 10/02/2025
O2 Discount Code: 50% off Selected Samsung Branded Cases with Purchase of any Samsung Handset
Valid until 29/01/2025
Receive 30% off Power Accessories with any Samsung Handset Orders at O2
Valid until 03/01/2025
Try this O2 Offer for 33% off Ice Skating Sessions for Priority Members
Valid until 22/12/2024
Get Free £10 Credit with Purchase of O2 Pay As You Go Sim Card at O2
Valid until 18/11/2024
O2 Discount Code: Get £300 off Google Pixel Fold Mobiles
Valid until 08/11/2024
O2 Voucher: £300 off Google Pixel Fold Orders
Valid until 31/10/2024
£200 off Galaxy S22 with this O2 Discount Code
Valid until 16/10/2024
Receive 30% off Selected Accessories with Handset Purchases at O2
Valid until 12/10/2024
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Explore All Valid O2 Deals & Sales for July 2025
Discount | O2 Voucher Details | Expires |
|---|---|---|
25% | Up to 25% off Airtime Plans with O2 Open Sign-Up | 31 December 2025 |
50% | Receive 50% off Selected Samsung Branded Cases with Purchase of any Samsung Handset at O2 | 17 July 2025 |
30% | O2 Voucher: 30% off Selected Samsung Handset | 17 September 2025 |
20% | Get 20% off with UNIDAYS at O2 | 31 December 2025 |
Deal | Major Bargain: Free Delivery | 31 December 2025 |
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Useful tips and information
Written by Ryan O'Connell
Learn more about this author
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:
Browse our selection of O2 voucher codes and choose the one that best suits your needs.
Visit the O2 website and add your desired items or plans to your shopping basket.
Proceed to checkout and look for the promo code box.
Enter your O2 voucher code and click "Apply".
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.