Why does my Galaxy S6 alarm sometimes make no sound?

[AC Question]

I have an AT&T Galaxy S6 Edge on 5.1.1.

A couple of weeks ago I slept through my alarm, at least that's what I thought had happened. When I woke up some time later, there was a notification that I had missed an alarm. It seemed strange, since I've never not been woken by the sound of an alarm before.

The alarm worked fine for the six months before that, and has been working fine for the last few weeks.

Today I was awake before my alarm went off. I then watched my phone screen light up with the alarm, but no sound. I turned off the alarm and waited for my backup alarm. Same thing - no sound.

I did not have Do Not Disturb mode turned on. I almost always keep my phone on silent, and the alarm has always worked. I'm using the default Samsung clock/alarm app.

 

[markatia]

That usually happens to me when my alarm volume is set all the way down. It became muscle memory if I was going some place quiet and ended up turning down the ringer, sound volume and then alarm volume. Tend to forget to turn it back on the night of.

Posted via the Android Central App

 

[Epos7]

Thanks for the reply.

The alarm volume was untouched - that is the slider was set to about halfway.