This means that your phone is not connected, and if it is connected, it is not recognized. Try opening a command prompt and typing adb devices; if it returns an empty list, your phone is not found.
Check that your drivers are correctly installed and that the device is in developer mode and with USB debugging enabled, as explained here.
Hi, I need a help with a project for Gear VR. I’m using ue4.10 to test a simple scene on Gear VR. I followed Unreal Engine documentation and was able to package the project for Android. But when I run the Install-GearVR .bat file, command line window shows up and gets stuck saying “waiting for device” and nothing happens. Does anybody have any idea why?
Thanks