Hi
To enable and adjust the strength of haptic alerts:
- On your iPhone, in the Watch app, go to: My Watch > Sounds & Haptics:
- Check that Haptic Strength is set to the middle or far right hand side of the slider.
Alerts can be silenced on Apple Watch using Silent Mode:
Adjust brightness, text size, sounds, and haptics
To receive only haptic alerts for Messages:
- On your iPhone, in the Watch app, go to: My Watch > Messages.
- Choose Custom and check - under Alerts - that Show Alerts, Sound and Haptic are each enabled.
To receive only haptic alerts for phone calls:
- On your iPhone, in the Watch app, go to: My Watch (tab) > Phone.
- Choose Custom and select your preferred settings under each of Alerts and Ringtone, including checking that the Alert Volume is towards the centre or right hand side.