This easy-to-use phone holder can be mounted on using command strips or using the hook that it is put through the hole on the backside of the main holder. Changing the hook diameter is easy to do incase your shower rods are too big. I will make different sizes if you ask me to. This holder is made for any sized phones and the one in the picture is an iPhone 15. When you mount the whole setup, it may seem wobbly but I assure you to not fear because I have tested its hanging abilities. As long as you don't hit the hook with your arm on accident,  your phone holder will be held up in place.