This is a basic sliding phone cradle, adjust for your phone as needed and attach to the mount of your choice.I just hot-glue mine to the dashboard.

I've been in the habit of finding a basic design whenever I change cars/phones and needing to scale whatever I find to accommodate the exact size of the phone/skin/case, usually wasting a few trial runs before I get it right.

The included STL fits a Moto G5 Plus with a pretty thin skin on it.

I needed a fairly wide "lip" so I could use one cradle for both my android and my wife's iPhone. If your lip is more than a few mm, set the "supports" variable to "true" in the SCAD file, and consider adding a mm or so to the inside dimension to allow for the ridges that will remain after you clean out the supports. You could also just rotate it to stand up on the print bed but it might not look as good.