Ensure that the operator supports the No.1 dual terminal service: The cellular network function of Apple Watch requires the operator to support the No.1 dual terminal service, so you need to confirm whether your operator supports the service. You can call the operator's customer service phone for consultation.
Setting up cellular mobile network on iPhone: Open the "Settings" application on iPhone, and then select "Cellular mobile network" to enter the setting page of cellular mobile network.
Enter your mobile phone number and service password: In the cellular network settings page of iPhone, enter your mobile phone number and service password.
Click "Login": After entering the mobile phone number and service password, click the "Login" button.
Reminder for confirming opening: After logging in successfully, you will see a reminder page for confirming opening. Please read the contents of the page carefully, and then click the "Confirm" button.
Wait for the turn-on: After the turn-on is confirmed, Apple Watch will automatically connect to the cellular network, and the signal strength will appear in the status bar.
After the setting is successful, you can set it on the settings page of Apple Watch or in Apple? View the settings of the cellular network in the watch application.
It should be noted that the specific operating procedures and opening conditions of different operators may be different, so it is recommended to consult the operator's customer service before opening to understand the specific operating procedures and precautions.