Xiaomi India — service related of mobile

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Xiaomi technology India Pvt Ltd. 2nd floor Y-5 EP block, Sector V, Bidhan nagar, kolkata, West Bengal, Kolkata, West Bengal, 700091

I'm facing auto brightness issue in no light condition . Actually this issue has started right after a new version of software update & I visited the nearest authorized xiaomi service centre for fixing the issue. But they failed to fix it. And they tried to cheat me by saying rubbish reasons. Actually the problem is the brightness level goes to such a minimum level so that it's very difficult to see or read anything for which I have to adjust the brightness manually repeatedly in auto brightness mode. It should be stick on that minimum level in no light condition once you adjust it in that condition & should fluctuate between minimum adjusted level to maximum level according to the lighting conditions.