android preview very dark

I’m hoping someone can help, haven’t had much of a response so far but will stay optimistic that someone may know the answer!

Have converted my original data smith scene to a first person template ready for Android Tablet. When I preview in android mode within UE4 all the colors are really dark. Wasn’t really expecting that. I don’t have mobile HDRI lighting on only Post Process volume camera exposure. It’s a baked scene with static lighting.

surely the colors shouldn’t be so different in preview mode even before the tablet has been connected and the APK uploaded.

Simply don’t know how to get round this or if it’s a bug?