Worldsim.com is the leader in global roaming products and they helped pioneer the roaming SIM card back in 2006. They have two, very similar SIM cards – one for the UK and one for the rest of the world. Their technology within the SIM is far beyond all of their competitors so they are able to offer free international roaming in 90 countries across the globe including Europe, USA, Canada, Australia, parts of Africa and much of Asia and they offer more coverage than most mobile networks (well over 175 countries). In addition to this the UK SIM card offers pay as you go rates at just one third of the price of Vodafone/Orange/Virgin/ etc and they offer international calls from 1p per minute.Since launching the SIM card in 2006 they have introduced a data roaming USB so users can access the internet anywhere in the world (135 countries) and get great rates. All these products are pay as you go. They also have have a dual SIM mobile phone.The products of Worldsim.com are sold by almost all the major airlines (BA, Lufthansa, Qantas etc) and they have 4000 distributors worldwide. They aim for their global SIM card to replace the local SIM card as they know it. They are ahead of the game and always making improvements to our products and their service, as well as reducing rates and giving free roaming in even more countries.