Caution:
Due to the built-in power saving function of some Android phones, the "Da fit" application is sometimes mistakenly turned off in the background, so you need to set it up on your phone by:
1. Open the "Personal Center" of the APP;
2. Select Suggested Feedback and find your problem, that is, why the disconnection occurs;
3. In the question it will tell you why you need to keep the background connection, then you need to select your phone model, and the setup is complete.
The Iphones rarely have such a problem, if it does, you can open the app and the connection will be restored at this time.