Review on GUB Mountain Bike Phone Mount Holder – Adjustable Aluminum Alloy Bicycle Cell Phone GPS Holder, Rotating Cradle Clamp for Motorbike & Cycling – Compatible with iPhone, Samsung, Android Smartphones (Black) by Derek Helvie

Doesn't hold my phone very well, the 'fingers' going up are tiny so unreliable. The silicone chevron strap is too small to be useful. I have an LG Journey with a case and it's quite a small phone but it's impossible to stretch the silicone enough to get into the corners. I will use it to keep my phone on my trainer when using Zwift, but I definitely wouldn't trust it to hold my phone securely enough during an actual ride.