Cell phone dead zones bring a call for more towers

If you look at a map of a cell phone provider’s service, there are large swaths of the country that have no cell signal. The solution seems simple: Erect more cell towers. But Verizon and AT&T say the rugged terrain in places like Oak Creek Canyon (AZ) makes that too difficult. Sprint says erecting towers in places with few people is just too expensive. The cost to install a cell phone tower is about $25,000, and that’s not including the necessary permits.