abhitailor77, Apr 19, 2017 : Since when i've updated to the oxygen os version 4.1.3 I'm facing some problems with the device. The problems are as follows, 1) After using finger print sensor the display doesn't turn on instantly, it take the time of 2-3 seconds to glow the display. 2) Sometimes voice fluctuations occurs during call. 3) Battery drains faster than previous os version. 4) Phone performance degraded.