To reproduce:
1. Open [Particles]FTP project from Collab (smaller version of project in progress);
2. Open "08_NoiseModule" scene;
3. Change Graphics API to OpenGLES2;
4. Build and run on Android devices.

Expected results: all effects work correctly;
Actual result: particles are flickering, sometimes disappear from the screen.

Reproduced with: 2018.1.9f1, 2018.2.3f1, 2018.3.0a8.

Reproduced with:
VLNQA00009, Samsung Galaxy Note 8 (SM-N950F), 7.1.1, CPU: Exynos 9 Octa 8895, GPU: Mali-G71
VLNQA00017, Huawei Nexus 6P (Nexus 6P), 8.0.0, CPU: Snapdragon 810 MSM8994, GPU: Adreno (TM) 430
VLNQA00013, Samsung Galaxy S6 Edge+ (SM-G928F), 7.0, CPU: Exynos 7 Octa 7420, GPU: Mali-T760

Not reproduced with:
Android:
VLNQA00024, Xiaomi Mi 5 (MI 5), 7.0, CPU: Snapdragon 820 MSM8996, GPU: Adreno (TM) 530
VLNQA00170, Google Pixel 2 (Pixel 2), 8.1.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00008, Samsung Galaxy Note8 (SM-N950U1), 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00010, Samsung Galaxy S8 (SM-G950U), 7.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00163, Lge V30 (LG-H930), 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540

Also not reproduced with iOS:
iPad Mini 5th gen, SoC: A9, iOS: 10.3
iPad Mini 4, SoC: A8, iOS: 11.4
iPhone 7 plus, SoC: A10, iOS: 11.4
iPhone X, SoC: A11, iOS: 11.4.1

By design: the scene is too heavy for mobile devices. Disabling half of the particles solves the issue.