GPS positioning depends on being able to search for satellites. It is normal that no satellites can be found in underground warehouses, resulting in failure to locate. It is recommended to locate in a wide space. At the same time, the Xiaomi Smart Band 8 needs to be combined with a mobile phone for positioning (connecting the band to a mobile phone that can be normally positioned can be located through the mobile phone's GPS).
Common factors that affect satellite search, such as dense buildings, tunnels, underground parking lots, under viaducts, and rainy weather. When there is no GPS signal, the movement track of the band will not be displayed, such as running one kilometer and entering indoors or underground garages, and the GPS signal is lost.