Even though the Raiju Mobile works with the Razer Phone 2, the controller should also work just fine with other Android smartphones.
Razer Debuts The Raiju Mobile Gaming Controller For Android Flagships
In short: Razer has just announced the Raiju Mobile, which is a new gaming controller that will work with the Razer Phone 2, as well as other flagship Android smartphones. This gaming controller features four remappable multi-function buttons, as well as the Mecha-Tactile action buttons. There is also a hair trigger mode and an adjustable