Turn on your iPhone and Apple Watch
Make sure Bluetooth and Wi-Fi are enabled on your iPhone
Keep your Apple Watch close to your iPhone
Open the Watch app on your iPhone
Tap Start Pairing
Hold your iPhone over the animation on your Apple Watch
Wait for the pairing to complete
Choose Set Up for Myself or Set Up for a Family Member
Follow the on-screen instructions
Sign in with your Apple ID if prompted
Set up a passcode if prompted
Choose your settings and preferences
Wait for syncing to finish
Keep both devices near each other until setup is complete