Some believe texting while driving is worse than drunk driving, I personally think they're both horrible and very dangerous. This link will give you up to date cellphone laws in your state. A few states have pretty hefty fines if caught.
Do you text and drive?
A few articles worth reading...
Texting caused total 'distracted driving' death to rise, study shows
Cell phone "talkers and texters" worse than drunk drivers
NSC estimates 1.6 million crashes caused by cell phone use and texting