How can I connect my phone with my Apple Watch

If your Apple Watch has never been connected to another iPhone, follow the steps in this article:

Set up your Apple Watch - Apple Support

If your Apple Watch has been connected to another iPhone before, unpair it and connect it after that to your current iPhone. This article has all the details:

Unpair and erase your Apple Watch - Apple Support

You may have to disable the Activation Lock before:

About Activation Lock on your Apple Watch - Apple Support

This article has more troubleshooting tips, in case you can not pair it:

If you can't pair an Apple Watch with your iPhone - Apple Support