Would not connect to my vehicle (2007 GMC Envoy). Tried multiple times over multiple days following all online guidance. Overall, unit is not great quality. I paid a few dollars more and got a much better unit (ANCEL AD310) which connected immediately, had a multiple line screen, and was incredibly simple to use.

Arrived in reasonable time period. Did not detect error codes for problems the car already identified. Wasted money.

If I could give it a zero, I would. Absolutely useless.