There will be one cell phone for every two people on Earth, as of some time today.
Somewhere on the planet today someone will skip over pages of fine print they will later regret not reading—and thumb their nose at the risk of a phone exploding—in order to sign a mobile services contract that will bring the worldwide number of such accounts to 3.3 billion, a figure roughly equal to half the Earth's population.
This doesn't mean that half of the people on the planet actually own a phone. In 59 countries there are more accounts than people. But only 10 percent of the world's population remains without cell coverage.
Read about the need for an American cell phone liberation front here.
Read about the FCC's secret cell phone map here.
Or just call your mother.