Supported devices + Mi Band 5, Mi Band 4, Mi Band 3, Mi Band 2, Mi Band HRX + Amazfit GTS, Amazfit GTR, Amazfit Verge Lite, Amazfit Bip S, Amazfit Bip/Lite, Amazfit Band 2, Amazfit Cor (MiDong), Amazfit Arc This app works with or without the original Mi Fit / Amazfit app (but we have no affiliation with Xiaomi / Huami). If you have a connection problem - recent apps screen: lock the Mi Bandage (pull down the app and click on lock icon) - phone battery settings/battery optimization: set Mi Band