VR deployment to android fails, nothing happen in device?

i have to deploy a simple motion control level in my Android device(lollipop) and i build it after go through the UNREAL documentation but it can’t help me, i build an apk and install it in my device and nothing happen(APP open and then close) so what should i do, please guide me guys am in big trouble.

Go to Disc:\Path\to\your\AndroidSDK\tools and run monitor.bat while your device is connected. Use green plus to the left in the Logcat tab to create filter. Use UE4|Debug as tags, insert your app package name you defined at Project Settings->Android->Android Package Name into “by Application Name” field. If you don’t see the issue outright, post the log file here.