I have purchase this gp because I do not want to have to use the one on my phone , plus I do not really trust the phone accuracy . the price be right too ! I love the simplicity of this unit , the accuracy of the map and arrival time , and of course the free lifetime update of map and traffic . the only problem I have have with the unit be that it do not find the detoured route when the on-ramp to the interstate I need to get on be close , but that be probably because I do not set the unit to detour . otherwise , this be a great purchase and I would highly recommend it to a friend .