Here is a video showing my iOS 12 problems
https://youtu.be/QN964rmuJCY

I also had problems with it not triggering laps. I would be out for a 20 or 30min session and come back with 3 laps. The times were wrong a 2:30 was showing as 5:09, the OBDLINK MX WI-FI would work partially on some laps with nothing on other laps. The MPH was wrong, basically it was a mess. I have ...