Roaming SIM
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.
Read more about Roaming SIM: Roaming Mobile Calls, Machine To Machine, Alternatives
Famous quotes containing the word roaming:
“Taught from their infancy that beauty is woman’s sceptre, the mind shapes itself to the body, and, roaming round its gilt cage, only seeks to adorn its prison. Men have various employments and pursuits which engage their attention, and give a character to the opening mind; but women, confined to one, and having their thoughts constantly directed to the most insignificant part of themselves, seldom extend their views beyond the triumph of the hour.”
—Mary Wollstonecraft (1759–1797)