So my fingerprint sensor stop working it been like two month already I thought it was a glitch so I did a factory reset to my phone and still the same what can I do .
Because the z flip fingerprint scanner is embedded in the side key, it can sometimes stop responding if it becomes dirty. Try thoroughly cleaning the sensor using isopropyl alcohol on a microfiber cloth to see if function is restored.
If this doesn't work, you will likely need to visit a certified Samsung repair center to fully diagnose the issue and have any required repairs completed by a certified technician.
