I have two cameras I routinely use on trips. They are a Contour HD 1080p (I have two will discuss why in a moment). It is no longer produced but can be purchased on eBay. The link below describes the camera.
https://driftcam.com/contour-hd-1080p-action-camera-reviewI also have a Fujifilm XP. This camera is hand-held and my wife can use it on the road. It also allows videos which can be done while riding as well. Just requires a change in mode. It is also waterproof to 50ft and shock proof.
We do, on occasion, use our phones for picture and videos. For me, that only occurs when we are stopped for a look-see or lunch/dinner. I do not ever use the phone as a camera while in motion on the bike. To easy to drop. My wife is the same (we keep our phones securely located in the top case or side case depending on the bike we are riding). My GPS interfaces with the phone and I can, using the Autocom communications system, answer and even make phone calls while moving. Which I have done to determine if a restaurant is open or not.
There are two ways to mount and use the Contour HD. One is under the nose of the bike (this is allowed on my the ST and the Wing but no so on the Valkyrie.)

The other way is to mount it on the windscreen. This mounting location offers an advantage in that I can turn the camera on and off as we ride. (It should be noted that I have two Contours. Only one allows one to easily start and stop images).

I prefer the uncluttered view these two mounting locations give me. It is almost the same as riding the road. There are no helmets or other things in the view. The only issue with the camera being mounted on the windscreen is there is vibration. I have considered getting another camera to minimize that or purchase some software to resolve the vibrations.
So, with these mounting locations you are flying down the roadways, unencumbered by extraneous objects, free and easy down the road.
Short ferry ride - under nose ST-1300 - Older Contour 480p
https://rumble.com/vb8hnb-short-ferry-ride.htmlNorth Carolina - Windscreen mount with a fairly smooth road. (the following videos have a default of 480p, you have to manually select 1080p to get full resolution.
https://rumble.com/virnkr-going-downhill-in-nc.htmlZion National Park Tunnel (I think) Demonstrates the cameras ability to handle changes in light. (Under the nose mount)
https://rumble.com/vlq6b0-mile-long-tunnel-2015.htmlBeartooth and Bighorn (under the nose on the Wing) why I like an encumbered view. You are sort of like superman, flying along the road, just a few feet off the ground and you miss seeing little.
https://rumble.com/vt17e5-riding-beartooth-and-bighorn-june-2015.htmlSome photos the wife took while riding with the Fuji




And just an example of one image while stopped. Not the phone.

The reasons for two Contours is that the first version did not support 1080p and it was a little harder to use. Still, I have lots of good videos I make with that camera. Lots.