What is Cellular Phone roaming? by Cloud Roam

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  Roaming is defined as the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services when traveling outside the geographical coverage area of the home network, by means of using a network in the area visited. Roaming is technically supported by mobility management, authentication and billing procedures. Establishing roaming between network operators is based on - and the commercial terms are contained in - Roaming Agreements. If the network visited is outside the home country, this is known as International Roaming. GSM Roaming, which involves roaming between GSM networks, offers the convenience of a single number, a single bill and a single phone with worldwide access to over 200 countries. The convenience of GSM Roaming has been a key driver behind the global success of the GSM Platform.
  
  
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