Mi Band is a smart bracelet from Xiaomi with lots of useful features.Mi Band connects to your smartphone via Bluetooth and can work for 30 days with no need to recharge.it is best advantage for official persons.I have been walking with the Mi and find it fantastic for its price. My friend who works in China says it’s the best selling and most populer over there so. The free app also does much more than I would expect for the price. As for steps in the night by other revewers. Are you sleep walking maybe ?