I own the 42mm Sport Apple Watch (1.01) While everything was fine on its first day of usage, things started to go wrong on day two. I noticed the following problems and believe, all of them might be related to one root cause: Apple Watch no longer recognizes it's on my wrist: - Passcode unlock while on my wrist does not work. The Watch keeps locking. - Stand time is consistently reported as zero, though I stand a lot. - No notifications . In time, I'm not convinced it's a hardware issue because I had two other watches(sold) that showed same problem. I live in Brazil and here there's no support yet. Thanks for any help.