Hi
The following steps may help:
If you have not yet done so, then also update your Apple Watch to the latest software:
Check your Wake Screen settings:
- On your iPhone, in the Watch app, go to: My Watch (tab) > General > Wake Screen > check that Wake Screen on Wrist Raise is enabled.
- It may help to toggle the setting off and on again, if it is already turned on.
Check your watch orientation settings (which tell your Apple Watch which way up and which way around you are wearing it):
- On your iPhone, in the Watch app, go to: My Watch > General > Watch Orientation.
If you are using a case or other protective accessory on your Apple Watch, then it may help to remove it.
Adjust the call volume during a phone call:
Unpair your iPhone from a Bluetooth headset, if one is presently paired to it.
Restart (normally) both your iPhone and your Apple Watch, turning both devices off together, then restarting your iPhone first:
Check this setting:
- Settings > General > Accessibility > Call Audio Routing > select Automatic.
- If the setting is already selected, then it may help to change it, restart your iPhone and set it back to Automatic.
Reset the network settings on your iPhone (you will need to re-establish your Wi-Fi connection afterwards, so have your password ready):
- On your iPhone, go to: Settings > General > Reset > Reset Network Settings.
Unpair and re-pair your Apple Watch:
If either issue persists, then I suggest that you contact Apple Support (remote diagnostics and/or mail-in service may be available, if required), make a Genius Bar reservation or visit an Apple Authorised Service Provider for assistance: