Hi. I wave a apple watch 7000 series, 38mm with ios 3.1.3. The software was updated on an iphone 5s with ios 10.2.1. I changed the phone, and now i have an iphone 7 with ios 10.2, i paired the watch, and it doesn't sync with with my contacts from my phone. For example, at letter L, i have on the watch one contact, and on my phone i have 10 on more. I reinstall my watch, paired again, the same. It's anoying. Now i don't use my watch because it doesn't sync. Can anyone help me with this?