I got an Apple watch recently and it has taken over the notifications.
My phone no longer vibrates or rings for notifications like messages or phone calls. It also doesn't ring or vibrate for my morning alarm. It only rang and vibrated on my watch. I turned off nightstand mode because I read that might help, and now it only vibrates on my watch.
I need my notifications and especially my alarm to come through my phone.
Apple Watch
For the alarms
If you set an alarm on your iPhone and your watch is on your wrist and unlocked it will sound on both.
If you set an alarm on your iPhone and your watch is off your wrist and locked it will only sound on your iPhone.
If you set the alarm on your watch it will only sound on your watch.
Notifications go to either your Apple Watch or iPhone, but not both. If your iPhone is unlocked, you'll get notifications on your iPhone, instead of your Apple Watch. If your iPhone is locked or asleep, you'll get notifications on your Apple Watch, unless your Apple Watch is locked with your passcode. For more info on notifications, see:
Notifications on your Apple Watch - Apple Support
I'm not sure but I believe the same type of protocol is going on for alarms also. Although they last item in the 'Get help with alarms' section in:
How to set and manage alarms on your iPhone - Apple Support
implies that isn't so. If you still need help, contact Apple Support.
Alarm no longer rings on phone, only vibrates on Apple watch
