Movement of your device can trigger a false event. This could happen from your phone sliding around or slipping from a surface.
We recommend securing the phone in a location where it can remain steady and secure during the trip. for example a cup holder or phone holder, etc.
The app may occasionally miss some detections or create some false detections. Driver performance and your profile are based on averages and use big data, not individual event points. Because of these factors, the results will be smoothed out.