text: Even though it may not be illegal in Georgia right now, one day it could become illegal for people to drive and talk on the phone. In the state of Missouri people under the age of 21 can not talk and drive at the same time. It is against the law because they are not of age to be trusted to talk and text while driving. They are at a high risk more than anyone else to get into an accident because they are underage teenagers who do not know how to stay off their phone.