Huawei WATCH 2 Faq page 8

In Airplane mode, Bluetooth and network connection are disconnected. You

will not be able to make or receive calls, send or receive messages, or use any
online functions.
Watch mode keeps only the basic Clock and Pedometer functions,

prolonging the watch's standby time.
Why can't I receive push messages on my watch
when it is connected to an Android phone?
If you cannot receive notifications when your watch is paired with an
Android phone, try the following solutions:
1. Check whether the notifications and SMS messages are displayed in the
status bar on your phone. Only messages displayed in the status bar can be
pushed to your watch.
2. Check the Bluetooth connection between your watch and phone. To do
this, go to the Wear OS by Google app on your phone and check the
connection status in the upper left corner of the screen. If the Bluetooth
connection has been interrupted, you will not receive notifications on the
watch.
3. Make sure that all tutorial cards have been deleted from the watch.