It looks like Samsung doesn't care at all about the large number of users experiencing connectivity issues on the S23 Ultra. I tried all possible solutions and nothing helped. When I make calls, I can’t be heard, the voice of the interlocutor disappears, I need to constantly check whether I can be heard well, sometimes I just talk to myself, because the connection just fell off... This is a kindergarten. This is unacceptable at work. As a result, I carry a second A54 phone with me, which does not have such problems in any place or with any SIM card. I don’t understand how a -75dbm signal can provide such poor voice communication. At the same time, under the same conditions, through the mobile Internet of the same network, I can communicate normally via instant messengers... My S22 also had no such problems under the same conditions and with the same SIM cards. Why doesn't Samsung acknowledge this problem and do something about it. Of my friends, 3 people have already returned their S23 Ultra because of this problem. It's unlikely that this is an antenna problem or something physically damaged - a huge number of users did not have this problem before updating to One UI 6.0
