O2 Discount Codes & Deals for 2025

1. Copy an O2 discount code from us here at NetVoucherCodes.
2. Head to the O2 website and select your phone plan or device.
3. Add any accessories or insurance and set your spend cap before pressing ‘Go to basket’.
4. Select your delivery and then paste your copied code into the ‘Got promo code’ box.
5. Press update and watch your savings automatically apply themselves to your order total! You can then continue to checkout.

O2 makes it really easy to get your hands on the latest tech without overspending. A few of us here recently upgraded to the new Samsung Galaxy S25 and iPhone 16 Pro, and we were able to save a decent amount using one of the offers we spotted through their deals page - plus extra on top using one of our O2 discount codes. It’s always worth checking before you commit.

If you’re not set on having the very latest model, their refurbished phones are a great option. I personally decided to go for a Like New iPhone 14 a couple of year back and saved hundreds compared with the new price, and it came with a 12-month warranty and 6 months of free Disney+. It looked brand new and worked perfectly - such a good way to save.

We also rate their student and family savings. The 20% discount on airtime for students is really handy, and if you’ve got more than one line in your household, you can use O2 Multisave to cut costs even further. One of our team knocked almost £30 off their monthly bill just by linking up a couple of accounts.

And with perks like the Priority app, which gives you early access to gig tickets and weekly treats, plus handy tools to track your usage and coverage, we love how O2 offers more benefits than just a new phone.

Save with O2 Deals

Discover the latest O2 offers and discounts in the great deals section ^↗.

• Here, you’ll find ways to save on the newest models of iPhones and Androids.
• You’ll also discover the latest deals on popular products like AirPods, tablets and data SIMs.
• Get more data for less, enjoy free Apple Music and airtime as well as a huge array of other savings.

Earn rewards through O2 Priority

As an O2 customer, you can gain access to an array of perks and rewards ^↗.

• With O2 extras you can choose from a range of free gifts and subscriptions when you take out an O2 Refresh phone, tablet or SIM-only contract.
• Choose a free six months of Disney+, unlimited access to Amazon Music, Video and Prime or a free subscription to apps like Calm and Audible.

Sign up for Priority Perks

As well as free gifts and extras, you can also enjoy priority tickets and up to 10% off food, drink, concerts, comedy shows and festivals with priority perks.

• Discover perks at O2 ^↗ venues including the O2 Academy and Twickenham Stadium.
• To receive these offers and O2 rewards every three months, make sure that you sign up for a reward account or download the Priority App.

Get 20% off Airtime with Multisave

If there’s more than one person in your household using O2, it’s worth looking into Multisave.

• You get 20% off the airtime on every extra line you add, and you can link up to 20 numbers.
• One of our team set this up with their partner and ended up saving nearly £30 a month.

Recycle your old device

If you’re finished with your current device or you have an old phone sitting in a drawer somewhere unused, then why not recycle it with O2 Recycle?

• Simply search for your phone, tablet or watch by entering your IMEI number, get a quote and send your device off to O2.
• You’ll receive payment straight to your bank account in a matter of days!
• Recycle your old phones, wearables and tablets and receive quick payment and free, flexible postage whether it is damaged or not.

Use a voucher code

Shop with an O2 voucher code from us and save on pay-monthly plans and SIM-only contracts.

• You can also check out our O2 deals section for the latest discounts on Apple accessories, tablets and mobile upgrades.
• O2 also offer up to 20% off airtime with their multi-save plans and tariffs, so make sure you check these out before you buy.

Enjoy seasonal offers

O2 provides seasonal offers all year round including summer and winter sales on the latest models.

• In these sales, you'll find discounts on mobiles, tablets, SIMs and more. Just make sure you hurry, these sales don't last long.

Go SIM-only if you’re happy with your phone

Some of us have kept our old handsets and switched to a SIM-only deal instead.

• O2’s plans start from around £15.99 a month, and it’s been a brilliant way to save - especially when you don’t need a new device. It’s simple, flexible, and much cheaper than a full contract.

If you're happy with your current phone and just want to cut down your monthly costs, O2’s SIM-only plans are a great choice. A few of us have made the switch and seen real savings.

O2 SIM-only plans come in flexible 30-day, 12-month or 24-month contracts. I recently picked up a 24-month unlimited data deal and saved nearly £60 thanks to a six-month free Apple Music offer. And that’s just one of the extras included.

Here’s what you can expect with most SIM-only plans from O2:

• Unlimited UK minutes and texts as standard.
• Access to 5G data (on all plans).
• Free EU roaming (up to 25GB).
• Up to 6 months free Apple Music.
• A 6-month subscription to Disney+, Prime Video or other entertainment apps.
• Priority perks like free weekly treats and early access to event tickets.

You can even keep your current number when switching, which makes the move hassle-free!

If you're looking to lower your phone bill but still want all the features of a full contract, this is definitely the way to go.

Just make sure to check our page for an O2 discount code before you sign up - you might be able to knock even more off your plan.