Ok. Yes the phone was plugged in on the second trip and I honestly don’t remember if it was plugged in the first time but based on these answers it sounds like I should check it again without directly connecting.
Thanks everyone.
Sorry if this has been covered but I did not see a thread…
Just put 35s on and drove from FL to GA.The difference between Waze and the speedometer was consistently 3-4 mph the entire trip. Today I put a couple of hours on the highway driving to ATL. Now they match perfectly. There and back...