After many research I ordered MI band. I was initially impressed with MI band. Band recorded activity well enough and sleep to reasonable amount. According to me
If you are thinking you might like a fitness tracker and are not sure works for you, the mi band is a good option to wet your feet and see if a larger investment of a for robust tracker would be worth your while.
It doesn’t require xiaomi phone for phone unlock feature. I am using it with my samsung and have paired it as trusted device. overall good.