To reproduce:

1. Download and open attached "repro981681.zip" project.
2. Build and run on Android device.
3. Check the output via ADB logcat.

Expected result: SystemInfo.supportsInstancing returns true on devices that support OpenGLES 3.0.
Actual result: SystemInfo.supportsInstancing returns false.

Reproduced with: 2018.2.0a1, 2018.1.0b7, 2017.3.1p1, 2017.2.1p4, 2017.1.3p1, 5.6.5p1.

Devices under test:

Samsung GT I9505*, OS:5.0.1, CPU:armeabi-v7a, GPU:Adreno (TM) 320,
Build:samsung/jfltexx/jflte:4.2.2/JDQ39/I9505XXUAMDM:user/release-keys

Motorola XT1032*, OS:5.1, CPU:armeabi-v7a, GPU:Adreno (TM) 305,
Build:motorola/falcon_retuglb/falcon_umts:5.1/LPBS23.13-58-2/2:user/release-keys

Htc HTC Desire 510*, OS:4.4.3, CPU:armeabi-v7a, GPU:Adreno (TM) 306,
Build:htc/htc_europe/htc_a11ul:4.4.3/KTU84L/407309.7:user/release-keys

Notes : All of these devices support OpenGLES 3.0 and according to documentation they should support GPU Instancing.