fingerprint calibration is physical problem of sensor. you can hard reset your device and again check the sensor. This is maximum possibilities to ensure that your sensor has hardware problem or software problem. if problem still persist it means the...
@rishi26 do you call any service provider about your network issue? they tell you about that samsung a50 has some network problem and from here all is safe and sound. the problem can be also determined by selecting manual mode when device is searchin...
go to setting and search for (com.samsung.android.biometrics.app.setting) without bracket and now you need to select OPTIMISE BATTERY USAGE, and then disable the button and restart the device. Still facing problem?? go to service center.
I am samsung a50 user and this phone is worst. Many people didn't notice but the performances of this phone is going down as time passes, there are many bugs and glitch if you're onto high usage applications. shifting of network band is major problem...