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HR comes and goes during day and disappear during night

Former Member over 5 years ago

Hello everyone,

I noticed that HR sensor has gaps for no apparent reasons several times a day. It can be 30mins, 1h
It is even more noticeable during night where sometimes, nothing appears in the morning... When it is the case the watch tells me that I should wear my watch while asleep which I do... It is so random that it seems more of a glitch...

Is this happening to anyone else or have I a defective one?

Thanks for your help !

0 Former Member over 5 years ago

I had exactly the same problem with a 4s, I replaced the clock and I solved the problem. Probably it is a defect in the HR sensor.