For my last 3 cars I have used Brodit phone mounts. You get a bespoke bracket which fits the car - in the Jag is is by the right of the vents. You then buy a holder that is specific to your phone and screw the two together. The holders can come with a charging mount which is what I get - plugs into the cigar socket in the normal way.
They are not cheap but are the best I have seen. Can't show you a pic because the mount hasn't arrived yet.
Re-reading your original email you said that the vent ones seem to fall off. Never had that with these - each mounting bracket is specific to your car. Never had one fall off and you can get them off with no damage to the car.