Enable Sleep Monitoring
Similar to Honor Band 4, Honor Band 5 features Huawei’s TruSleep. As the name suggests, it helps you monitor and improve your sleep habits. Plus it dims the band’s screen to help you sleep better. And as you might guess, it’s not enabled by default.
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Fortunately, you can easily enable it with the Band setting at the top. All you have to do is Huawei | True Sleep.
Source : uk.moyens.net