Tech analysis: Iridium and 3G

When I first read about Iridium, the global satellite-based mobile phone system, I thought it was a cool idea. When I read more about it, and discovered how the service actually worked, I knew it would never sell. The thing about Iridium was: The phones didn’t work indoors, or in cars, buses or trains. The sound quality was worse than a conventional digital mobile phone. The USA was divided into five vertical stripes or ‘zones’, and you could only have your service activated in three zones at once.