it can also be used to restore and pair the Apple Watch once you restore your new iPhone with the iCloud backup. But if you’re doing a fresh install, or if you’ve missed those steps ...
An Apple Watch that isn't paired to an iPhone is greatly diminished in its capacities. If your smartwatch is not pairing with your smartphone, you'll want to connect it as soon as possible.
Ever since the Apple Watch Series 4 or Apple Watch SE ... Since many of the features are unavailable without an iPhone, I think it’s worth pairing it with an older device or an iPhone SE ...
Quick tip: You can also use this to move your data to a new Apple Watch, as long as you're pairing it to the same iPhone. Once you re-pair your Apple Watch, you'll be given the option to set up ...