1. Complete the binding of mobile phone and watch in China (foreign network interface problems, unable to complete the binding operation).
2. The SIM card installed on the watch needs international roaming service. Please consult the operator for the specific opening method.
3. Turn on the mobile data and data roaming switch on the watch in advance. The setting method is as follows: Watch Settings >; Advanced settings > in the network connection, turn on the "move data" and "data roaming" switches.
4. Add "+86" before the contact number on the watch. If Dad's mobile phone number is 182 * * * 1876, it needs to be edited as "+86182 * *1876" in the address book.