[Windows Central Question]

Hi, I'm having Nokia Lumia 730 since November 2014 and recently I updated it to windows 10. After the update my phone's "double tap to wake up" doesn't seem to respond or work. Moreover, when I make a call, the screen automatically switches off (without even covering the ambient light sensor). Is anyone over there having the same issues.???
Initially I thought it is because of the screen guard protector. But later I realized that is not the reason, because I placed a flash light in front of the sensor while making calls but still it didn't work. Any help