Why use Xiaomi smart bracelet mobile phone to consume electricity faster?

Hello, when the mi band is connected to the mobile phone, the mobile phone needs to communicate with the bracelet constantly, so it will cause a lot of power loss, which is different from Jawbone's smart bracelet, but the price difference is also great. At present, the cost performance of mi band is still very high. Although there are many shortcomings. It is recommended to equip more mobile phone batteries.