"Brilliant. My Galaxy S8 fits in there nicely even ..."
Brilliant. My Galaxy S8 fits in there nicely even with its slim military-grade case. I trust it not to drop my phone completely. I drove 100 miles mostly on the motorway doing 60-80mph yesterday without any issues.
The only negative point is the annoying rattle when your phone isn't in it. It makes it sound cheap quality, and gets on your nerves if you can hear it while you're driving - I say if because it depends on the individual, and how loud the bike is. Me on my bike, I can hear the rattle. I don't need to mount my phone as a sat-nav on my bike often, so I may need to find something to stick in the holder to prevent the rattle for the majority of the time.