why no history data?
This function has been added into latest version,please update your app.
Why step data is so biased?
We have done so many tests before,the results proves 5% error,which is allowed in smartband's industry.But in real life,the scene is not as simple as in test.The device monitor your steps by your handshakes.If you shake your hand but not walk or run,the device will also recognize it as walking.That's the reason why sometimes the steps are so biased.To avoid such bias,try not to shake your hand until you walk.
I did not sleep yesterday/I slept late yesterday,but the sleep data is just as usual.
the device tracks your sleep data according to your hand's shake.If your handshakes become small,the device will recognize the time as sleep time.This is why the data is not so accurate.