Before setting up your smartwatch, make sure that there is a stable Wi-Fi signal in the room. If the Wi-Fi router signal is not strong enough, use Wi-Fi Direct.
How to solve the problem:
1. Switch your Apple Watch off.
2. Disconnect your iPhone from the local Wi-Fi networks by deleting the access keys. To do that, go to Settings, then Wi-Fi, and press ‘i’ on the right of the network and choose ‘Forget this network’.
3. Turn off Bluetooth on the iPhone.
4. Connect to your Wi-Fi network again. It should be a 2.4GHz network. It does not matter if the 5GHz network has the same name.
5. Turn the Bluetooth back on in your phone.
6. Turn on the Apple Watch. It should be next to your iPhone.
Wait for the Watch to find the iPhone; a green connection icon will appear in Glances.
Check the connection by sending a search signal from your watch to the phone. If the connection is working, you can try to turn off the Bluetooth on your phone again to check if your Apple Watch is connected to Wi-Fi. You will first see a red icon to indicate the loss of connection, but if the setup process was successful and the watch has updated the network configuration, a green cloud icon indicating an indirect device connection will appear.