GSM images
The SIM Card
The back of a GSM phone opens, and the tiny SIM card is inserted, as in this example from Europe's Amena cellphone service. The bottom view is the card outside the socket showing contact points.
Computer Desktop Encyclopedia THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.Copyright © 1981-2010 by Computer Language Company Inc. All rights reserved.
Evolution of 3G Technologies
This chart shows the evolution of carrier technologies throughout the world as they move from standard cellphone services to high-speed data capabilities.
Computer Desktop Encyclopedia THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.Copyright © 1981-2010 by Computer Language Company Inc. All rights reserved.
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