You need to connect your Xiaomi Watch 2 to the Mi Fitness APP first, grant permission to access contacts and sync your watch with the phone. Then, the contacts on your phone will sync to the watch automatically.
To sync the contacts, please refer to the following steps:
1. Open the Mi Fitness APP on your phone and ensure your watch is connected;
2. Go to [Profile] and select [App permissions];
3. Check whether [Access contacts] is granted;
4. Go back to the [Device] interface, and tap [Sync] to start the synchronization process;
5. Once the sync is complete, you will be able to access the contacts on your watch. Tap the [Contacts] icon on your watch to check the contacts.