[Q] Has your phone ever slept through a text message, call or other notification? topic

On occasions when the phone is sleeping, it will not alert me of a text message until I've turned the screen on. No LED is flashed and often the alert sound is delayed until the phone is woken as well. Looking at the battery graph there will be no "awake" line during that period though the message will have a properly aged time stamp. Now I think the same thing happened with a missed voice call which is quite disconcerting.

I wonder how many people are experiencing this and might think the LED notification is not working properly, which is a common complaint. I've tried clearing the cache for Hangouts and Dialer and am waiting to see results but this was not happening on a consistent basis.