How to reproduce:
1. Open attached Unity project "Overreach"
2. Build "MainGame" scene on Samsung Galaxy S8

Expected result: Plane looks the same as in the Editor.
Actual result: Plane is rendered with artifacts.

Reproduced with: 2019.2.0a10, 2019.1.0b9, 2018.3.11f1.

Devices under test:
Reproduced on:
VLNQA00096, Samsung Galaxy S8 (SM-G950F), Android 8.0.0, CPU: Exynos 9 Octa 8895, GPU: Mali-G71

Not reproduced on:
VLNQA00262, Sony Xperia XZ Premium (G8141), Android 9, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00261, Samsung Galaxy S10+ (SM-G975U), Android 9, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640
VLNQA00001, Google Pixel 2 (Pixel 2), Android 9, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00015, Samsung Galaxy Note8 (SM-N950W), Android 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00101, Samsung Galaxy Note8 (SM-N950U), Android 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00021, Samsung Galaxy S7 (SM-G930F), Android 7.0, CPU: Exynos 8 Octa 8890, GPU: Mali-T880
iPhone 6 iOS 11.3.1

Notes:
This issue is reproducible on a newly created scene with newly create Plane.
This issue is not reproducible on a newly created Project.