since I'm upgrading to the world of bluetooth, I figured I'd have my phone in a location, other than my pocket, that will be decent to have to hear me scream OK GOOGLE now... and so I bought a few magnetic mounts and I believe my winner and location are stellar... I bought the WIZgear (https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1) and man is it strong. I do not think it will fall and I'm placing it on the overhead console, between the ultrasonic slits. I played with the bar and magnetic discs/sheets it comes with and I used the largest one between my Pixel 3 and its rubber case and it seemed to hold extremely well as I wAS GIGGLING IT hard TO SIMULATE A POTHOLE OR nasty bump. It held amazingly!!!!
I'm clamping it in place for a minimum 12 hrs, based on reviews I've read of many different kinds of magnetic holders that are stuck to car Dash's/plastic panels.

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S