You can save on your mobile bill with O2’s SIM-only deals like 40GB for £7.50 and 80GB for £8.50. 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 £7.50 and 80GB for £8.50). 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.
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In the past, it was commonplace that you could use your mobile phone at no extra cost when travelling in Europe. However, as of 2025, this is no longer the case and you can now be charged up to £2.59 per day for roaming in Europe. For a family of four who are travelling abroad on a one-week trip, this can add up to an extra £70 in roaming fees.