I sure hope Apple puts Qualcomm modems back into iPhone. The Intel ones are inferior in nearly every way.

I live in a poor reception area. With an iPhone + Intel modem, iOS reports 0 signal. With an iPhone + Qualcomm modem, I do get enough of a signal to make calls and receive SMS.

Unfortunately, WiFi calling on iOS has also gone downhill in recent years (ATT & VZW). It seems as though I have to have a bar or 2 of a signal for WiFi calling to work. If I have no cell signal, WiFi calling connects/disconnects every few minutes, even if I'm in the middle of a call.