Redmi — redmi note 4- subhash chandra fulara

Address:	Dehradun, Uttarakhand, 248003
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Subhash chandra fulara
Hi,
I have brought redmi note4 last month and working experience is good.
But i'm facing the software problem from initial days.
At first i assumed that over use of data problem, and then i checked there was good amount of space in memory.
I also noticed that i'm getting this issue on redmi note 4 only.
While playing the apps display turns down to black what to do please help and some times an undefined sound coming, also some time they can't able to here my voice.

Kindly help us to rectify this issue. Since this issue decreasing the phone quality.

Subhash chandra fulara