Posted pics of my soundgaurd cab mount I built in the above thread. It did require me to drill 2 holes in the ledge under the windshield.
And I bought one of these cell phone suction cup mounts for my galaxy s7 and I have not had a problem with it falling off the window for the 2 years its been in use. I do take it off and re-suction it to the window before each use.