Lighting issue when running on real device

[MrCoinOps]

I'm sure I've done something silly and basic, but I can't see it. Below are screenshots from the game running in Preview Mode and the other running on a actual device. The screenshot from the actual device is extremely dark in places and looks WAY off. The PC screenshot is still horrible, but not as bad as the device version. I have no idea what I'm doing wrong. Lighting on mobile is at a loss for me.

[drpsyko]

From what I see, some materials aren't rendering correctly. Do you use decal/tessellation or world position offset for some of the materials?

[MrCoinOps]

From what I see, some materials aren't rendering correctly. Do you use decal/tessellation or world position offset for some of the materials?

Thank you for the reply. I'll check tonight. I'm completely new to materials.