On my SFOS phones?, Or in the UK?, Or …? It would help if you were more precise with your question, but If you are asking whether there are still 2G/3G networks working here in the UK where I live, then yes, there are.
EE (Sony Xperia 10 iii) has already shutdown 3G but 2G is still active and ‘3’ (Sony Xperia XA2+) still supports 3G (until 2025).
2G is remaining in the UK for the foreseeable future as too much technology (e.g. emergency services pagers, remote streetlighting control, alarm systems, smart meters, etc) relies on it because of the low power and bandwidth requirements.
It would also be an unlikely coincidence that both EE and ‘3’ would shutdown their 2G and 3G networks literally in the same hour that I upgraded both my phones. I can also see my iPhone dropping to 2G in poor signal areas where I live as well.