Roaming SIM
978-613-2-03399-4
6132033998
168
2010-06-26
49.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Roaming SIMs can be defined as mobile phone SIM cards that operate on more than one network within their home country. They currently have two main applications, least cost call routing for roaming mobile calls and machine to machine. Using a normal network locked SIM, travellers for instance, can use their own mobile phone (if it's enabled for roaming), in any country that has a roaming agreement with their home network. This manifests itself to most users when they receive a text message welcoming the traveller to a local network. However, once they return home their SIM will only work on the network with which they have a contract. A roaming SIM however, also known as a global roaming SIM, will work with which ever network it can detect, at home or abroad.
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Informatics
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