How do I set up Apple Watch?

1 . Identify the model of Apple Watch

2 . Make sure that the previous owner removed Activation Lock from the watch and that the watch has been erased. They must unpair the watch and remove Activation Lock by entering their Apple Account password, so you can use the watch. 

    • If you see the passcode lock screen or the Home screen, the device needs to be erased. 
    • If you can, try to pair the watch with your iPhone. If you’re asked to enter the previous owner’s Apple Account password during setup, then Activation Lock is still on.

3 . For cellular models of Apple Watch, make sure that the previous owner removed and cancelled any active cellular plans.