If hard reset works then its most likely how the firmware gets uploaded in the phone. Had similar issues with few different OS while rebooting complete firmware (can be drivers etc) so sounds like a firmware issue to me, hopefully new updates roll.
If hard reset works then its most likely how the firmware gets uploaded in the phone. Had similar issues with few different OS while rebooting complete firmware (can be drivers etc) so sounds like a firmware issue to me, hopefully new updates roll.
For Outlook, note that you have to go into [Outlook > Click the 3 dots on the bottom... > Settings > Options] and then click on the options for "Show a notification banner" and "Play a sound" for each Outlook account.