It’s a $79 telescopic controller that connects to your smartphone via its USB Type-C port to make it look like a Nintendo Switch with the joy cons attached. Unfortunately, the maximum dimensions of the controller limit its compatibility with some devices. As it turns out, there is a simple workaround for that.
See Razer Kishi mod lets you fit larger Android phones or a phone in a case
The new telescopic gaming controller Razer Kishi won’t fit some larger Android phones or phones in cases, but some users found a way around this problem.