Review on 🚴 GUB Bike Phone Mount Holder: Universal Adjustable Cradle Clamp for iPhone & Samsung Galaxy - RED88 by Dennis Chase

This is a good mount for your phone when cycling. It stays in place throughout the journey. The only issue I've found is that depending on your racing wheel or bars in general, taking photos while cycling can lock your phone. I use it to film my rides but it's great for keeping the phone perfectly in place. The dark border in the image below is my drag bar.