After decades of development, a standard phone gives users access to 2, 500 services, from 911 service to call forwarding.

FORBES: Wired and restless

According to Burnside, the Pathfinder can save some customers up to 60% over British Telecom's call-forwarding fees.

ENGADGET: Device lets UK cellphone customers forward calls on the cheap

The calls, often to expensive destinations in poor countries, sometimes last days, Mr Crooks says, because cheats use forwarding systems to serve many customers with a single call.

ECONOMIST: Computing