O2 SIM Only 20GB 5G Deal with Unlimited Calls & Texts for £6pm

O2 SIM Only plan offers 20GB data (40GB with Volt), unlimited minutes and texts, EU roaming, and O2 Priority benefits for £6 per month on a 12-month contract. This budget-friendly 5G SIM deal is ideal for light users who still want reliable data and roaming features. No voucher is required; simply select the plan on the O2 website and complete signup online. No screenshot is required for this deal.