Could you please tell me if Smarty supports Nokia 4G mobile phones - espcecially for roaming?

Shodan000007  You may find that not a lot of people will see your post as it is on a thread about something else (not a criticism, just may help for future posting - you can always start a thread).

If your phone is a standard 4G, then Smarty should work without issue as the sim operates on 3G, 4G and 5G signals.