How to setup your Apple Watch

Cellular Plan for your Apple Watch

You have to go into your iPhone (the user of this Apple Watch, their iPhone specifically) and open up the Watch App

Then go to Settings > Activate Cellular > Sign in to MyRogers account

The username and password it's asking for, is the MyRogers account, that this number belongs to, so if you are the account holder, this is what he would use to log in to his account on Rogers.com