How to pair a second watch for a child to my iPhone
FYI: A GPS only Watch can do all the stuff a GPS + Cellular Watch can, provided the iPhone is nearby.
Note: Watch is not a stand alone device with or without cellular. it needs to pair with a compatible iPhone.
A GPS + Cellular Watch do not need the iPhone to be nearby.
What ckuan said, but an Apple Watch GPS+Cellular has to pair with and be activated with cellular, and that uses the iPhone's cellular number and account. So, if you don't have the iPhone nearby, it has to have the cellular activated, which means the iPhone needs to have cellular activated as well.
Don't.
If they're going to have their own watch, they need their own iPhone.
Not recommended.
If you do, all you stuff will also be on your child's Watch.
Can he use the watch without having a phone?
No, Watch needs to paired with an iPhone.
Can it be a phone with only WiFi or does it require cellular?
How to pair a second watch for a child to my iPhone
