Missing calls randomly after updating to the build WW_34.1004.0204.128

[thepra]

Here in italy my carrier does send me an SMS for each missed call so I have the smartphone on my desk and ~80% of the calls are missed by default almost immediately because I also have the timestamps in the missing calls in the notification SMS.

I just can't work like this knowing I'm missing most of the people that try to reach me(I've a business too).
The smartphone isn't in "Airplane Mode" or "Do not disturb" or "Silence" modes and this happen and drives me crazy.

How can I try to solve this issue?

[Cyslawo]

So it's looks like a problem on your carrier side. Maybe try to contact with them.

[thepra]

I'll go to their store tomorrow, I think that the issue might be the sim card that comes from the first 4G times.