Azzahra General Medical Center Palembang is a first-rate primary health facility clinic under the auspices of Azzahra Hospital Palembang. Azzahra General Medical Center Palembang used the JKN Mobile application to serve BPJS patients. In practice, JKN Mobile users at Azzahra General Medical Center Palembang are decreasing. The purpose of this study is to measure usability JKN Mobile using Syste…