Seems to be a common theme since January, for most Samsung gear watches and clearly the new galaxy watch as well. I refer you to my post, have contacted support regards to my new galaxy watch, when we contacted them regarding my husband's s3 earlier this year, they couldn't/didn't fix the problem. They just replaced his pcb. It continued to happen! https://eu.community.samsung.com/t5/Smartphones-Tablets-Wearables/Galaxy-Watch-not-measuring-Heart-rate/m-p/671246
... View more