You'll be asked to re-enter the code to confirm it.Create a passcode by tapping the digits on your Apple Watch.I prefer to create a regular four-digit passcode, although a longer one can be more secure (but harder to remember.) For a longer passcode, tap Add a Long Passcode.

To create a four-digit passcode, tap Create a Passcode. While you can skip this step by selecting Don't Add Passcode, I highly recommend creating one.

Next, you'll be opted to create a passcode.

If you tap Disagree you will not be able to proceed with the pairing.

After a few minutes, tap Agree to accept the Terms and Conditions.

You can refer to the Apple Watch model and the time of the latest backup if you aren't sure which to select.

Select the correct backup by tapping it.

If you don't see the Restore from Backup option, then there may be an issue with your iPhone backup. If you select Set Up as New Apple Watch, you will not retain your previously used settings and will start set up from scratch.

As long as you created the iCloud backup of your iPhone correctly, you will see the option to Restore from Backup tap it.

If nothing happens after a few seconds, tap Pair Apple Watch Manually and follow the on-screen instructions.

Hold your Apple Watch up to the Camera as instructed.Unpair your Apple Watch from your old phone.

Setting up apple watch