How to transfer a Wear OS smartwatch from one phone to anotherWe show the steps and screenshots for transferring your Galaxy Watch 6, Pixel Watch 2, or OnePlus Watch 2 to your new Android phone.
Source: How to transfer a Wear OS smartwatch from one phone to another (https://www.androidcentral.com/wearables/how-to-transfer-wear-os-watch-to-new-phone)