All plans include unlimited UK calls & texts, 5G access, EU roaming, and O2 Priority rewards
30-day rolling
30-day rolling
Get more flexibility, better value, and exclusive rewards with O2 SIM only plans
30-day rolling contracts mean no long-term commitment. Change or cancel anytime without penalties.
Access O2's award-winning 5G network for ultra-fast speeds and reliable connectivity across the UK.
Exclusive access to Priority tickets, experiences, and offers from top brands and venues.
Use your data, minutes, and texts in 49 European destinations at no extra cost.
Make crystal-clear calls over WiFi when mobile signal is weak. Available on most plans.
Unused data rolls over to the next month, so you never waste what you've paid for.
Common questions about O2 SIM only plans and deals
An O2 SIM only plan gives you a SIM card with data, minutes, and texts without a phone. It's perfect if you already have a device or want to buy one separately. SIM only plans are typically cheaper than phone contracts and offer more flexibility with 30-day rolling contracts.
Yes, you can keep your existing phone number when switching to an O2 SIM only plan. Request a PAC (Porting Authorization Code) from your current provider and give it to O2. Your number will transfer within one working day.
Yes, all O2 SIM only plans are 5G ready at no extra cost. You'll need a 5G-compatible phone and be in an area with O2 5G coverage to access 5G speeds. O2's 5G network covers major UK cities and towns.
O2 Priority is an exclusive rewards program for O2 customers offering early access to tickets, special offers, and experiences from top brands. Download the My O2 app and access Priority to see available offers and rewards.
Yes, O2 SIM only plans include EU roaming in 49 European destinations at no extra cost. Use your data, minutes, and texts just like at home. For destinations outside Europe, check O2's international roaming rates or add a travel bolt-on.
Call 0344 809 0202 to discuss upgrading your O2 SIM only plan. You can increase your data allowance, add features, or switch to a different plan. With 30-day contracts, you have flexibility to change plans anytime.
If you use all your data allowance, your data will stop working until your next billing cycle. You can purchase additional data through the My O2 app or upgrade to a plan with more data. Some plans offer data rollover to help prevent running out.
Yes, O2 SIM only plans are 30-day rolling contracts, so you can cancel anytime with 30 days' notice. There are no early termination fees or penalties. Simply contact O2 customer service to cancel your plan.