The average number is around 90%
You can regulate when and how my pre-teens use their cell phones by contacting your cell phone carrier, and asking them to set up parental controls.
adults
There is no recordings of this but I would guess most troubled teens so about 1/4 of our nation has teens that use their phones for bad things.
about 2-3 hours
no
They make them more responsible. (if they pay for it them selves)
yes they did, but they were much bigger than they are now!
The majority of kids in the US have cell phones. Since the question was asked in 2008, costs of cell phones have dropped to point where price is not a barrier to owning them.
about 82.4 percent
1000%
As of December 2008, there are 271,000,000 cell phones in the U.S., about 88 percent of the population.In the world, there are 4,100,000,000 cell phones in use.For a full list of countries and number of cell phones, see related links.
are cell phones good influence for teens well if know how to use one