My 11 year old son has a 6 series Ipad that he bought himself. It is the only Apple product in our family. For his birthday he is asking for an apple watch. It is my understanding that a watch must be connected to a phone, not an Ipad. My question is if we got the cheapest version (3 I think) of the Apple watch can it be connected to a Apple phone that does not have a phone number? His cousin has an old phone (version 6) that we could use to connect to WiFi only. We are not interested in text or emails on the watch. He wants to use it for music, time, calulator, fitness tracking etc. Will those options still work if he has a phone with out a phone number/data package?