During the trip, I noticed that with the option "Automatically select network" turned off and selecting the preferred home cellular network, after losing coverage, when unable to find set network, it connects to a foreign roaming network. In my opinion, this is a critical bug, because with other smartphones there is no such problem and it always forces connection to the selected network even when it loses coverage. At that time, I had the software in ver. 30.11.51.83.
Could you take a look at this problem?
Best regards.