The basic concept of cellular phones began in 1947 when researchers looked at crude mobile (car) phones and realized that by using small cells (range of service area) with frequency reuse could increase the traffic capacity of mobile phones substantially, however, the technology to do it was nonexistent.
Anything to do with broadcasting and sending a [...]
A cell phone is nothing but a radio, but very high-tech. It is basically like a CB radio or walkie-talkie. But CB radio or walkie-talkie is a simplex system, where at a time a person can talk or listen. But a cell phone is a duplex device, where a person can listen and talk at [...]
Choosing Where & How To Buy A Phone Contract:
With mobile phone contracts, you get the best deals online. It doesn’t matter if the High Street phone shop is owned and run directly by your preferred network or run by an agent under a franchise agreement, phone networks make more money from online customers. A high [...]