Thanks for the suggestions. I had an S7 in a Speck grip case for the past 5 years and I would place it in the coin holder, fit in there slightly diagonally. Recently picked up the S21+ in a Spigen Slim Armor case and it’s too big to fit in the cup holder too. Tried many of those magnetic mounts, this new phone is too heavy and even with the S7 they never held the phone in place for long. Gave a cup holder mount a whirl but it places the phone in an awkward position, not to mention the holder itself barely fits the phone. There is a screw under the lower trim panel near the rear defrost button that holds the HVAC component in place. Might have to use some thin aluminum sheeting and jerry rig something to hold the phone where the coin tray is.