Review on Securely Navigate on Your Motorcycle with KEWIG Bike Phone Mount - One Touch Locking, Tool-Free Installation, Fits 4"-7" Cellphones by Victor Houser

Very impressed with the reliability on my Honda Ruckus scooter (even at 80km/h). It looks and feels secure enough to hold your phone even on bumpy roads. The way it stays on the phone prevents it from slipping off as it wraps around the edges of the phone. The part that attaches to the handlebar is secured with a screw (attached to the clamp arm) to clamp the handlebar. The chance of it falling out is very, very small. I used the thicker of the two rubber O-rings provided to fit perfectly on the handlebars. I'll update if that fails.