Question for anyone who even thinks they have an answer. I purchased my son a 38mm AWS3 for Christmas. Walmart had them for $120 and he’s really wanted one for a while. That said, he doesn’t have his own iPhone (he’s only 10 and doesn’t need one yet in my opinion). I wear the Nike + AWS4 and was wondering if I set his watch up on my iPhone can he still enjoy the basic features such as activity tracking, heart rate, steps and so on without it messing up my watch?