I'm experiencing two minor issues with my Z3 (one of which I also experience on my Z2 tablet.) I enabled the stamina clock feature but when I wake my phone to view the time on the lock screen, the time doesn't update. Second issue is that I've set the notification sound on the default email app multiple times and it still ends up defaulting to the original notification sound instead of using my custom one. The custom notification file is on the internal storage.