At the last update i have faced the issue, but itself fine after some day. But again it repeat the problem
1. Always on display not showing, because of the proximity sensor problem
2. Touch to wake up is not working
3. At the time of attending a call, the screen blacked out, and press power button the screen will wake up, but not screen off when the time of rising phohe near to the ear
4. At the time of playing the voice record in whats app, the screen will turned off, the voice will come from the ear piece
Some people say its an issue at your phone, but the device alright. Because of the issue came at the time of update. At the last update i have face the same issue in my phone. But automatically it will alright some couple of day. The same problem arises after the update of 2.6
Above all the problem working when you walk in the sunlight