With O2 International Sim, you can make UK calls to international mobiles and landlines from just 1p a minute.Plus you'll get O2 minutes,O2 texts and data on top.With a £10 top-up, you get 3000 O2 texts and 100MB data.And when you top up £15 or more,you get 3000 O2 minutes,3000 O2 texts and 200MB data. You'll also get lots of perks, just for being on O2.You'll get free treats on Priority, up to 10% back on your top-ups every 3 months, and free access to 1000s of O2 Wifi hotspots across the UK. This sim pack includes instructions on how to top up. As soon as you've topped up, your sim will be ready to use.