One thing that always bugged me when crossing a country border is that my mobile devices took endlessly to select a new network. That was probably because the device first searched all frequency bands for all available network and only then presented the results. One way out was to temporarily switch to GSM only mode, select a network and then switch LTE/5G back on. But it seems that finally the problem was recognized and addressed! While automatic network selection still takes ages, my current mobile presents the networks in manual network selection mode as soon as they are found. This way, selecting a roaming network just takes a few seconds. Very nice, thanks you!