One thing to be aware of is that riding around a lot with the phone attached can cause the stabilisation sensor in the camera to go wrong. When this happens your camera feed starts wobbling around all the time. This happened to a friend of mine and let’s just say his snapchat stories had a very distinctive look :)
I’m not sure whether more expensive mounts do a better job with this (I think his was quite cheap) but make sure to do your research if you’re planning on using it a lot, and you care about your phone’s camera.
It was just from cycling. Perhaps he just got unlucky though? From the sounds of things his experience seems like an outlier. Or he was just so fast that the vibration frequency matched that of a motorbike 😁