Washington - July 1 is the day the new cell phone law goes into effect in Washington. That means that you will not be able to hold your cell phone to your ear if you make calls while you're driving. That will be a secondary offense for which you could be liable to a $124 fine.
A secondary offense means that police will not be able to pull you over for that violation, but if you're seen making a moving violation while illegally using your cell phone, you will be liable for that offense as well.
You will be able to use a hands-free device, or a blue-tooth headset, to talk on your cell phone while you are driving. Or, you could use your phone's speaker function to talk.