Newman's phone to see how to install the card.

1. Prepare a SIM calling card in nano form, and choose the appropriate calling card according to the operators supported by the phone watch. 2. If the watch is turned on, it is recommended to turn it off to avoid system failure. 3. Separate the watch body from the strap, and you can see that the card slot is near the usb port. 4. Gently push the card slot, and push the sim card into the card slot in the direction shown in the manual. 5. After installation, put the watch back on the strap and restart it. If the phone can dial normally, the calling card is installed correctly.