[ceriously76]

Z10 will randomly stop playing notifications through the main speaker and only plays them through the earpiece speaker.

Very hard to hear unless it is up to your ear. I have not seen anyone else with this issue except my buddy gets it on his Z30 as well. Any ideas from anybody? a reboot seems to clear it up but then it will happen again randomly

[crackbb10]

I've had this problem with WhatsApp for a very long time where it wouldn't notify me through the speaker. I don't know if it notified me through the ear buds, I can't recall. I know this stopped after one of the major updates from WhatsApp.

Yours is slightly different because you can't update Notifications, there's nothing to update. Are you running the latest official OS update? If a reboot only patches the problem to return at a later moment in time I would consider reloading the OS through BlackBerry Link. Perhaps it's a bug in your current OS. It happens.

Make sure you back up important data if you choose to do so.