The steps of dual Bluetooth connection are as follows, divided into two step A and step B:
Step A: How to connect the Smart Watch
(After the Bluetooth is connected, you can set some functions for the watch through the mobile phone, and your exercise and health information will be automatically synchronized to the mobile app.)
Download "Da fit" App, then turn on your phones Bluetooth.
(Search and download in the App store or open the manual and scan the code to download)
Enter the App, click on the second icon at the bottom of the phone screen, then you will see a "ADD A DEVICE" button and click it to connect to the device named I22 for pairing.
Step B: How to connect to use CALL Function
Open your phones settings and turn on the Bluetooth, find the "WATCH CALL" and click it to connect.
When the Bluetooth is connected successful, you can make/answer/reject the call on your wrist.
(The distance of the Bluetooth connection should not exceed ten meters. Recommended within 3 meters.)
(PS: If you do not want to pick-up sound from your phone when the Bluetooth is on in your phone, you only need to disconnect the Bluetooth "watch call", and the sound will be played by your phone without affecting the use of other functions of the watch.)