The first phones had about 20 minutes of talk time on a charge, and then had to be plugged in for 10 hours.
The wireless industry says now some phones can go 24 hours or more on a charge.
CTIA, The Wireless Association, says minutes of use in the United States have exceeded 2 trillion annual, we have more wireless devices than we have people, and we send 6 billion texts every day.
About half of people in the country now use wireless as their primary phone.
Many people feel they can't go anywhere without their mobile phones today.