I've had this ODBII scan tool for years: https://www.amazon.com/dp/B00ZP6PG62
It's always been problematic in that sometimes it won't start syncing with my phone until I've been driving for a block or two. I've never figured out what causes it to work or not.
1. Anyone know a trick to get this working?
2. If I replace it, what make/model do you recommend?