Terms and Conditions apply, including Clubcard Double Data and Double Minutes Terms and Conditions - see here. Contract Summary also available, including details of services, equipment, top-up requirements, credit expiry, internet speeds, prices, duration, renewal, termination and features for end-users with disabilities - see here. Prepay 15 customers get an additional 15GB data (for ROI use only) by registering their Clubcard with Tesco Mobile. Prepay Data Plus customers get an additional 500 any network minutes by registering their Clubcard with Tesco Mobile. More Data Than You Need based on average smartphone data usage as published in ComReg's Quarterly Report.