My story...
I had about 10k miles on my ST1300 and my old iPhone 6, using a Ram x-grip and never had an issue.
In June of 2019, I "upgraded" to an iPhone XR, The first time out on the ST (using the same x-grip mount) I rode a few hundred miles and when I returned the camera was shot. It would not focus and was making an audible buzzing sound when the camera app was opened. I went to the Apple store and they replaced the camera in the phone. It worked like new. I assumed I just got a bad phone because of the lack of problems I had with the iPhone 6.
The next time I rode, I used the same ram mount and put it on the handle bars of my v-strom 650. Rode around all day, no problems with the camera. A few days later, rode with the phone on the ST1300 again, this time with a quad-lock mount and it killed the camera. I went back to Apple and they replaced the camera again. At this point, I did a ton of reading and it appears sometime around the iphone 6s or 7, Apple went with a different type of optical image stabilization and was causing the issue.
I initially made a mount for the dash that I connected the quad lock mount to. This got the mount off of the handle bars. I rode like that for a year or so and never had a problem. This past spring I picked up the Quad-lock vibration dampener and mounted it back on the handlebars of the ST1300 and have had zero issues.
For some reason the camera in my iPhone did not like the "vibes" of my ST1300. The bike is silky smooth and I can ride it all day long with no complaints in smoothness. I assume it has something to do with a high frequency vibration/buzz? I have ridden with the phone mounted to the handle bars of the v-strom numerous times and never had an issue. One would think it would the exact opposite.
I highly recommend the quad lock mount with the vibration dampener.
The Quad Lock® Vibration Dampener protects smartphone camera's image stabilisation from harmful vibrations wherever you use your motorcycle. The Quad Lock Vibration Dampener reduces over 90% of high frequency vibrations produced by motorcycles.
www.quadlockcase.com