beeping during phone calls

[Pmch]

My Xperia XA1 keep beeping during phone calls. 

Once I switched off Smart backlight control in setting and the problem solved temporary. But after restarting my phone the issue is back again. 

In other froums "minute minder" was suggested to cause this isuue; however I couldn't find such option in my Xperis XA1 setting. 

[Pmch · Accepted solution]

I think I found the solution. I searched in other forums and try all the suggestions. Turning "date roaming" OFF solved my problem. 

Help this will help others too.