Review on Carboss Cell Phone Holder Dashboard Mount: Secure Anti-Slip Suction Pad for Car, Compatible with iPhone 12 Pro Max/11, Galaxy S21, Android Smartphones and GPS Devices (3.0-7.2inch) by Michael Wilson

I bought this holder specifically because of its design. This helps protect the phone from the heat of the windshield, and the base is made of a soft, slightly tacky rubber that transfers easily from one car to another and won't leave a mark on the dashboard. The base can be rinsed with water to remove dust affecting holding capacity. Can't think of any cons yet, but remember that this is for a relatively flat surface but works well on slightly rounded surfaces as the rubber base partially floats off the part that actually holds the phone. Great idea, will not block or damage air conditioner vents.