Penelope Stetz

The Cell Phone Handbook Penelope Stetz 第2 版

Cellular phones have gone from a "gee whiz" curiosity to an indispensable communications link for more than 224 million U. S. subscribers. Despite cell phones' enormous popularity, it has been difficult to get reliable, objective information on which to base purchases and maximize performance. This bestseller is the bible of the exploding wireless telephone industry. It provides a solid understanding of wireless technologies so you can make an informed purchase decision the next time you buy wireless equipment or services. Learn everything you need to know about cell phones and get an insider's view of how the industry works and where it's headed.