Hi everyone,
I just seem to have endless glitchy problems with my S23.
4g/5g signal has never been great since I first got it 2 years ago(my partner is on the same network, different phone so I know it's not the network).
Since the last updates a couple of months ago, call forwarding has been turning itself on. Even when I have signal or I am connected wifi!? I have missed many important calls!
Also, seems to just disconnect from networks continually at random times. Only way to solve the call forwarding issues, and disconnecting from wifi or mobile networks is to reboot. Sometimes this doesn't work!
Next step, I have to clear partition cache. This only fixes it for a day or two.
This is driving me crazy! I have a very expensive phone, that cannot be relied upon for the most basic features! 
My partners mid range Motorola on the same network performs wonderful, and is much quicker!
How, why, help!
Does my phone need sending back to Samsung for further investigations?
Thank you.