States Which Require Hands

All Phone Bans
There is currently no state that prohibits all of its drivers from using a cell phone and hands-free device while driving. However, there are certain groups of people that all cell phone use is prohibited for: novice drivers and school bus drivers. Novice drivers are banned in 28 states and Washington, D.C., and 18 states and Washington, D.C., prohibit school bus drivers from using a cell phone while they have passengers on the bus.
Hand-held Bans
As of 2010, there are eight states--California, Connecticut, Delaware, Maryland, New Jersey, New York and Washington--that have laws prohibiting all drivers from using hand-held cell phones while driving a vehicle. Washington, D.C., and the Virgin Islands also prohibit using hand-held devices while driving. However, in Maryland, an officer may pull you over and cite you for using your cell phone while driving even if you have not committed another offense. Using a hands-free device may be beneficial if you reside in one of these states.
Text Messaging Bans
Text messaging while driving in 30 states, Guam and Washington, D.C., is prohibited for all drivers. As of 2010, 11 of these 30 states enacted these laws. In addition, 10 other states prohibit novice and school bus drivers from text messaging while driving.