How does Apple Watch answer the phone, make a phone call and send a text message?

When there is an incoming call from your iPhone, the Apple Watch connected to your iPhone will display the incoming call, and then press the button to answer the call. If you want to make a call, please return to the application screen, find the phone application, open it, and then select the person you want to call. Texting is the same as above. You can also directly press the power off button to open and close contacts, and quickly send text messages and make phone calls.