I have Lily about two months now. It is quite inaccurate in recording.
Sleep - It seems to record time spent in bed rather that sleeping.
Intensity minutes - it shows I did 41minutes of moderate/vigorous intensity exercise for yesterday. I cycled 42KM and walked 5KM.
Cycling - It switches off after 4miles of cycling and only restarts when I plug it in. Then it tells me I have 25% power, though I started cycling at 90+% charge.