BELOW is my email to Lux autobrighness developer:
Hey Vito, hope you are doing well.
My friend has this phone (Micromax A94 canvas Mad) and Lux is perfectly working (values are changing in Setting > Advance > Debug). My phone is Micromax canvas 4 A210 highly advanced than my him and values in Debug section, light sensor shows only 1 and 51 value. In his phone, values CHANGES like 1,6, 8 and so on swiftly according to ambient brightness.
What I observed is that, the light sensor of TAOS semiconductor corp. which is in my friend's phone, is much compatible with Lux and my light sensor is Capella. I tested both phones with same settings, HIS phone respond to change in lux values in Debug page and NOT MINE.
Hope you'll fix this. Thank you.
Please visit the link below to find the conversation between me and the developer of Lux autobrightness app: