Unity Remote 4 connected but Shows black screen

When I press play in the editor the scene runs for both the Game view in the editor and my phone.

But my phone just shows a black screen. It functions well. Meaning I can interact with the scene from the phone. I can pan, zoom, click buttons but blindly.

The model is GT-S7582. I’m using the latest ADB version. Phone is connected via USB and “USB debugging” is enabled and “Allow mock locations” is enabled. Unity version is 5.4.0b18 on Ubuntu 14.04 64 bit

Have you set up JDK and SDK?