How to install the protection card of c8 telephone watch?

1. Open the upper small cover. There is a card slot in it, which is used for loading cards, not middle cards. Just insert the card.

2. It can be seen that it is a charging data line interface, which is the same as the charging interface of a mobile phone. There are three buttons on the other side.

3. After starting the power supply, press the button on the right side of the power supply to switch to the phone book and other software.

Then press the button on the left side of the power supply, and the contacts and telephones in the phone book will appear.