O2 Discount Codes for March 2025

O2 offers mobile phones, SIM-only plans, and broadband services with great coverage and customer service.

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Save 10% on orders of $50 or more.

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Save £200 on the Samsung Galaxy S22 with this O2 promotional code

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O2 Discount Activity History

24 days ago User applied the code FRIDAY

about 1 month ago User applied the code TABLET50OFF

about 1 month ago New voucher codes added 20%OFF2NDPAIR , SAVE5X2 , TRAVEL20 , ACCESSORY20

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Available for 26 March

Total offers	14
Coupon Codes	14
Best Discount	20%

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How to Use a Discount Code on O2 in 4 Simple Steps

Step 1: Go to the O2 website, browse the products, and add the items you want to your basket by clicking the "Add to Basket" button.

Step 2: Once you`ve added everything you need, click on the basket icon at the top of the page and select "Checkout" or "View Basket" to proceed.

Step 3: On the checkout page, look for the box that says "Discount Code or gift card" (or voucher). It’s usually located near the total order amount or "Checkout".

Step 4: Enter your voucher code in the box and click "Apply". The discount will update the total price automatically.

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