Fixed Screen Always on Nexus 5 after 6.0 update

Fixed an issue on my Nexus 5 where the screen would not turn off, and therefore touchscreen would still be active during calls.
My nexus 5 has the common issue of always detecting wired headset, soundabout fixed this in 5.1.1 fine, sound to earpiece and screen off, great. After 6.0 update sound routing still worked great, however screen no longer turned off.

Fix - Go to Apps, Soundabout, permissions, allow telephone.

Done.

That would be the sensor that detects your cheek being near or away from the phone.

Google may forcing the allow telephone permission in Android 6.0.

In the past you only needed permission: android.permission.WAKE_LOCK

https://productforums.google.com/forum/#!topic/nexus/oqh-V37hgDM

https://productforums.google.com/forum/#!topic/nexus/9HZHQJMrxF8;context-place=topicsearchin/nexus/nexus$205$20proxmity