Found it fairly easy to setup and integrate with phone as far as hands free calling and Wi-Fi hotspot. Really like the versatility of the unit, like having your phone on the car screen. Speed of the unit is very good, no lag at all, and navigating thru the different screens and apps is very user friendly. Have only had unit for a week so I cannot attest to it's durability or reliability, but if it continues to perform as it has so far, an A+ is deserved. That would make it a must have.