Are you a business traveller who regularly travels overseas? You may travel for meetings or you may travel to source new products to sell through your company. You could be in a service-based industry like PR or marketing or you could be the purchasing manager in a toy company looking for the latest toys at a factory in China. Whatever you do, if you are a business traveller chances are that you will need to call back home. You may already have experienced the frustration of trying to get in touch in a cost effective way, missed an important call or suffered a bill with extremely high roaming charges. You may have been approached on the street by a beggar because of the jangling change in your pocket or you may not be anywhere near a phone that can make international calls.It does not need to be like this anymore. You don’t have to worry about missing a call or spending a fortune on international roaming calls. You can be contactable in whatever country you are in with a world SIM card. Like your home mobile phone, a world SIM card fits in any standard phone as long as it is unlocked and works the same way. You can make calls, send and receive text messages, and even surf the Internet through GPRS with a world SIM and people can contact you. One day you could be meeting with suppliers in China, the next day you could be in a meeting with venture capitalists in NYC. A week later you could be watching your favourite sporting team play an international match (for example World Cup Soccer or an Ashes Test Match.)With a world SIM card you can keep in touch with people back home at a fraction of the cost of what you would spend had you chosen to use your own home mobile phone. You can save anywhere between 60 and 90% on what you would normally have spent. I am sure that you would rather keep your money in your own pocket. These SIM’s are also generally prepaid so you can better control your cash flow. You know exactly how much money you are spending instead of getting stuck with a huge international roaming bill when you get home.All business travellers who regularly engage in international travel should get themselves a world SIM card. It will make you more efficient in business and also will save you a fortune. A small upfront cost is in your best interests.