Alarm doesn't sound

[EE]

Hi, had this problems two times with my Xperia V, when the alarm goes of the phone doesn't make any sound, it only vibrates and shows the normal turn of/snooze screen.

The phone was turned on, both the normal sound and the alarm sound was on, battery was fully charged and so on...

[AerielFenn]

I have the same problem on my xperia x. And I don't have ingress. Really annoyed by this as I can't wake up properly without my alarm and have had multiple problems because of the alarm sound not working. Although when is not working I've tested other apps like spotify and YouTube and the sound works perfectly fine.

[MarlonUk1]

does this happen when you are on safe mode? make sure that DND options is disabled