*The monthly price of your Airtime Plan will increase each April from April 2025 by the Retail Price Index rate of inflation announced in February each year plus 3.9%. If RPI is negative, we'll only apply the 3.9%. See http://o2.co.uk/prices
**The digital prepaid Mastercard® is issued by GVS Prepaid Ltd, an Electronic Money Institution authorised in the UK by the Financial Conduct Authority with Firm Reference number 900230; pursuant to license by Mastercard International Incorporated. Mastercard® is a registered trademark of Mastercard®International Incorporated. See Terms & Conditions.