China "gsm mobile phone" Guide

The Cell Phone Mysteries, What Are Dual Band, Tri Band And Quad Band Cell Phones And Where Will They Work? ( Part 1)

The world of the mobile phone is a confusing one these days and few things can be as frustrating for people wondering how to start a cell phone business than trying to work out which GSM frequency will work where and whether they need phones with multiple cell phone bands. Here’s a quick look at GSM frequencies and how they work on cell phones. This is part one of a two-part blog series.