I modded CHOETECH Fast Charging Area Qi Wireless Charging Pad with some 1/2 x 1/8 Inch Neodymium Rare Earth Disc Magnets and added some 15/8 x 1/32 in N52 Neodymium Magnets in between the case (you will likely need a TPU flexible case since hard ones will be tough to conform around the magnets) and the phone. I now have a magnetic FAST wireless charger for my car where I just need to snap in my phone and it charges. I, unfortunately, sometimes go over bumps on the highway at 80+mph and have not had the phone move a bit.
This should work with ANY compatible phone with wireless charging.
The entire process is easy, here's a quick video I made:
Not mentioned or shown in the video is my supergluing the magnets into the case and the into the charger so they do not move.
Edit: Tip from Milimbar, put tape over the magnets so it doesnt scratch the glass
I'm using a Kenu Airframe+ vent mount and a piece of plastic in between the the wireless charging pad and the kenu.
Overall, this is not a cheap mod/car dock. You could get the cheaper, non-fast charging wireless pad, split magnets with someone, and get a cheaper vent mount.
Fast Wireless Charging pad: $35
Kenu Airframe: $30
Magnets: $13 and $12
Edit: the only reason why I had used the 1/2 x 1/8 magnets is because I had spares from a previous purchase. JaredC01 makes a great point that you can combine a few of the 5/8 x 1/31 magnets together to form a stronger magnet.
Non-fast Wireless Charging Pad: $26
50 count 15 x 1mm 5/8 x 1/32 in N52 Strong Disc Rare Earth Neodymium: $12 (oos at the moment)
Wizgear vent mount: $10
Some images of the mod:
Quick gif of it in action, in the car:
If there is a magnet at the bottom right of the phone (while facing the back of the phone), auto-brightness and the lights of the capacitive buttons will NOT work due to the smart case sensors. Just go ahead and remove the magnet from that position from the case and the charging pad. The 3 magnet positions will still be more than enough to hold the phone up.