To add some extra information about my situation in case it helps. I’m used to stream audio on my commuting way where there is a tunnel with no connection, Xperia X had some issue, but now it reconnects fine. With first use of Xperia 10 III today, I had to restarting network connectivity via Sailfish Utilities (wifi logo state was connection ongoing).
SIM2 is used by sd card and VoLTE not enabled.
Have a nice day.