With the four-corner silicone damping column, the patented damping system will prevent your phone's fragile components, such as lens, from being damaged due to vibration, protect your phone effectively. Excellent compatibility for your phone cases and handlebar size. Use the bike phone mount with cellphones ranging from 4.7” - 6.9” and maximum thickness (with phone case) of 0.52". Compatible with iPhone 13 Pro Max/13 Pro/13/12 Pro Max/12 Pro/12/12 mini/11 Pro Max/11/11 Pro/XR/XS/XS MAX/X/8 Plus/8/7 Plus/7/6S Plus/6S, Galaxy S20/Note 10/S10/S8/S7 Edge/S7/S6, LG G5/G4, Google Pixel, Huawei, etc,. The high-strength holder keeps your phone firmly in position over even the roughest roads with the four-way lock. The bevel barb design makes the phone placement more stable. The contact surface is made of soft silicone to protect the phone and ensure the stability of the placement.