My wife bought me an Apple Watch S5 on O2 a couple of years ago now with
a data plan. I thought I had simply linked it to my account and taken
over paying for the data plan on my account, but have just discovered
she is also paying the £5/month too! ...
My wife bought me an Apple Watch with cellular, that includes an airtime
plan. I have set it up and paired with my iPhone, but when I go to set
up the cellular connection it wants to add another £5 a month airtime
plan to my existing sim airtime plan...