Comes with 25GB 5G Data. Top-up required: £15, O2 Priority, Charge to mobile, Recommend a Friend and Earn Rewards, O2 Rewards, 5G-ready, O2 Wi-Fi Hotspots, 50 International minutes free, No speed caps, Wi-Fi Calling, eSIM Compatible, Free EU roaming up to 25GB. Our Big Bundle tariffs come with unlimited texts and minutes and start from £5 a month. Once you have used your allowances or if you do not renew your bundle each month, you'll pay our Big Bundles standard rates. Data can roll over month to month, as long as you renew your Big Bundle.; With O2's Big Bundles Pay and Go tariff not only can you access O2 perks like Priority, you can also choose from a range of flexible 30-day contracts and go as big as you want. Just top-up the right amount each month for your chosen Big Bundle and we'll exchange the right amount of credit for your minutes, texts and data allowance. You'll be able to rollover your data at the end of the month. Big Bundles last for a month and renew automatically on the same day each month, if you've got enough c