2013 Shadow Spirit 750
I picked a great phone mount, from Amazon also.
The GUB Bicycle & Motorcycle Phone Mount. $21.
I put it on the Spirit, as soon as I bought the bike and rode 150 miles home, a lot of it at about 80 mph.
I put my backup Samsung Galaxy S9 in it, just in case. No issues. Held onto the phone like a champ.
I've since put my Samsung Galaxy Note 9 in it with the same results. I'm kinda surprised at its great performance.
I was looking at the Quadlock system, but their case is not compatible with the Whitestone Dome tempered glass screen protector AND it costs way more.