The 3 PAYG Data Sim has 12GB of 3G or 4G data for your dongle or Mobile Wi-fi device, which is available to use for up to 12 months. Then just top up when you need more data. Three\'s Pay As You Go Trio SIM has all SIM types on one card, so whether you need a Standard, Micro or Nano SIM, you can just pop out the one you need. Just pop this super simple Three data SIM straight into your unlocked 3G or 4G device and that is it. Comes with 12GB data preloaded, so you can catch up on the game highlights, Skype your gap year kids, play Angry Birds and tweet your heart out. Data valid up to 12 months then you can just top up and Pay As You Go. Use your data abroad at no extra cost. Being charged to use your data abroad is not great. With Three you can use it abroad at no extra cost in many *Go Roam destinations while on holiday, including USA, Australia, France and Spain. *Previously called \'Feel at Home Destinations\' 4G at no extra cost. Paying extra for 4G sucks. We believe you should get fast internet at no extra cost. That is why Three offers 4G at no extra cost. All you need is a 4G tablet and be in a 4G area. Find out more about Go Roam Destinations here.