By You can save on your mobile bill with O2’s SIM-only deals like 40GB for £8 and 80GB for £10. You’ll also get extra value with EU roaming, O2 Priority perks, and more.
If your mobile bill is about to go up this month, as it will for millions of others across the country, one of the quickest and easiest ways to reduce your bill is by switching over to one of O2’s latest SIM-only deals.
As well as cutting your mobile bill, you’ll get lots of data included on these new plans (e.g. 40GB for £8 and 80GB for £10). There’s also extra value included with EU roaming and additional ways to save like O2 Priority and Volt.
In this article, we’ll look at 8 ways to save on your mobile bill with O2, such as with their latest SIM-only deals and other network benefits. This includes their O2 Priority perks, as well as their Volt boosts, subscription savings, and the everyday cashback available through Airtime.
1. Can you save money by switching networks?
As 2026’s annual price rises begin to kick in, it’s worth reviewing your current mobile plan to see how much you’ll be paying. From April, it’s possible you’ll be paying a lot more than before. As such, you might be able to save some money (and get more data for the price) by switching to another network.
One of the highlights at the moment is O2’s 40GB data for £8 and 80GB data for £10 deals (both available on a 12-month contract). There’s a pretty good chance that this will cost less than your current plan, saving you money straight away when you switch. It also unlocks many more ways to save, with inclusive EU roaming, O2 Priority, and more.
The following table shows O2’s best SIM-only deals in March 2026:
| Network | Data | Monthly Cost | |
|---|---|---|---|
| 40GB data | £8.00 per month 12 month contract Monthly cost rising to £10.50 on 1 Apr 2026 | See deal |
| 80GB data | £10.00 per month 12 month contract Monthly cost rising to £12.50 on 1 Apr 2026 | See deal |
| 100GB data | £12.00 per month 12 month contract Monthly cost rising to £14.50 on 1 Apr 2026 | See deal |
| 250GB data | £15.00 per month 12 month contract Monthly cost rising to £17.50 on 1 Apr 2026 | See deal |
| 300GB data | £16.00 per month 12 month contract Monthly cost rising to £18.50 on 1 Apr 2026 | See deal |
2. Get inclusive roaming & save on your trip to Europe
Whether you’re off to Spain for an Easter break, or planning a trip to France for skiing with your friends, the last thing you’d want is to worry about the cost of using your phone whilst you’re there.
Over the last few years, many major UK networks have reintroduced charges for using your phone in Europe. On these other networks, you could now be paying up to £2.59 per day to use your phone in Europe. For a family of four on a one-week trip, that can add up to an extra £70 in roaming fees alone.
O2 has taken a different approach to EU roaming, having committed themselves to being the only major network to retain free EU roaming for all their customers. On O2, you’ll be able to use your minutes, texts and data at no extra cost (up to 25GB per month) in more than 40 European destinations. That can save you a lot of money and lots of stress on your next trip abroad.
3. Get everyday savings & exclusive rewards with O2 Priority
As an O2 customer, you’ll get access to their exclusive O2 Priority app.
According to O2, their customers are able to save up to £200 every month with Priority. For instance, you can get a discounted hot drink or savoury treat from Greggs each week – both for only £1. There are also discounted Vue cinema tickets and discounted holidays from lastminute.com. On top of that, there’s a weekly ‘Blue Monday’ promotion where you can enter to win a range of exclusive prizes from different brands.
Alongside the Priority savings, there are also exclusive rewards and experiences that are available to customers on Priority. This includes pre-sale tickets for thousands of gigs and events across the UK. You can also get VIP access to O2 venues across the UK, with benefits such as allowing you to skip the queue, save on drinks, or to use the cloakroom for free.
4. Unlock Volt benefits with Virgin Media & O2
If your household has Virgin Media broadband as well as an O2 Pay Monthly SIM, you’ll unlock their Volt customer benefits for even more connectivity on both services:
- Double data on your O2 SIM. As a Volt customer, you’ll get double data on all of your O2 Pay Monthly plans. If you’re on a plan with 250GB data or more, this will be upgraded to unlimited data.
- Roam at no extra cost in 75 destinations. You’ll get the O2 Travel Inclusive Zone bolt-on added to your plan, allowing you to roam in a further 27 worldwide destinations at no extra cost. This includes the USA, Canada, Mexico, Australia, New Zealand, and more.
- Faster broadband with Virgin Media. You’ll get an upgrade to the next fastest available broadband plan on Virgin Media. For instance, if you’re currently on Virgin’s M125 broadband, you’ll be upgraded to their M250 broadband at no extra cost.
- WiFi Max with Virgin Media. You’ll get Virgin Media’s WiFi Max service added to your plan at no extra cost. This gives you better wi-fi coverage throughout your home, with plug-in WiFi Pods that boost the coverage through your home.
5. Save on subscriptions like Amazon Prime & TNT Sports
If you’re currently paying for delivery or entertainment subscriptions, you may be able to save some money by adding them to your O2 bill. For instance:
- If you add Amazon Prime to your O2 bill, you’ll get a £2 discount on your airtime plan.
- If you add TNT Sports on Discovery+ to your O2 bill, you’ll get a £2 discount on your airtime plan.
- If you add the Xbox Game Pass Ultimate to your O2 bill, you’ll get a £1 discount on your airtime plan.
It’s also possible to add a range of other subscriptions, such as Disney+, McAfee, and Cafeyn. It’s a highly convenient way to pay as they’re simply added to bill.
6. Get cashback on your everyday spend
As an O2 customer, you’re eligible to enrol in Airtime. This is an app that allows you to earn money off your O2 mobile bill, simply by linking your bank cards and then spending on them as normal.
You can earn rewards when spending at more than 200 retailers, including many well-known brands like Boots, Argos, ASOS and IKEA. Once you’ve collected enough rewards, you can redeem it as credit towards your O2 mobile bill.
7. Benefit from an award-winning network
As well as saving money on O2, you’ll be able to benefit from their cutting-edge network across the UK on your phone.
O2’s network covers more than 99% of the UK’s population with widespread 4G coverage. They also offer 5G coverage in many areas. They’ve won the uSwitch award for ‘Best Mobile Network Coverage’ for the last two years (2025 and 2026).
8. Stay connected with O2’s satellite coverage
As of 2026, O2 has gone even further and become the first UK mobile network to offer satellite-to-mobile connectivity.
With their O2 Satellite service, you’re able to stay connected even in the most remote parts of the UK. For instance, if you’re planning a trip to the Highlands or the Lake District, you’ll be able to use the satellite connectivity as a backup to your regular terrestrial signal. This allows you to explore further without the need to worry about losing signal.
If you have an O2 mobile plan, you can add the ‘O2 Satellite Bolt On’ through your ‘My O2’ account. It’s currently available for an extra £3 per month and is compatible with the Samsung Galaxy S25 series of phones.
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