We were able to use the Ram Quick-Grip mount on a recent tire test and found it to work quite well, keeping the phone secure even off-road.

Begin Press Release: 


RAM Quick-GripTM XL Universal Phone Holder for Large Phones

This version of the spring-loaded RAM® Quick-GripTM XL holder provides a secure fit for a variety of large phones and other devices. Users can insert and remove their phone with one hand, and adjustable side support arms keep devices firmly in place. A set of two nuts and bolts is included to attach the holder to any RAM® B or C size diamond base containing the universal AMPS hole pattern.

Features:
• 2-hole AMPS mounting pattern compatible with RAM® B and C size diamond bases
• Adjustable side support arms keep device secure in rugged environments
• Easily remove and dock phone with one hand
• Backed by a lifetime warranty

Device Compatibility: Device Compatibility Ranges:
• Height Range: 5.75” – 7.25”
• Width Range: 2.625” – 3.625”
• Max Depth: 0.72”

• Apple iPhone 11
• Apple iPhone 11 Pro Max
• Apple iPhone Xs Max
• Apple iPhone Xr
• Apple iPhone 8 Plus
• Google Pixel 2 XL
• Samsung Galaxy Note 9
• Samsung Galaxy Note 8
• Samsung Galaxy S10+
• Samsung Galaxy S10
• Samsung Galaxy S9
• Samsung Galaxy S9+