Android set-up - Quick black screen on device and gone

Dear Friends,

I am setting myself up on android mode (SDK API 6.0) on processing 3.2.3. Seems pretty straight forward. When I run a sample js (.pde) sketch on computer by selecting android mode and selecting my device connected though USB debugging enabled.

I notice my phone screen pops-up black screen for less than a second and then back to home screen.

I assume this is something very silly mistake am doing. Is this something anyone faced before ? Else I will dig deeper. ANy hints where to start highly appreciate.

Thanks in Advance Raj