Try using WAP connection?
Otherwise, reset connection settings.
Also is the SIM older than the broadband?
Sometimes you need a new SIM, or to delete settings, and enter manually
I'm sure Google will find you the settings for virgin WiFi on Samsung.
.....
If I helped or solved your problem, please like or tick solved.
Have been using phones since 1993, and am self taught.
I offer advice for free, cos I think it'll help, if it doesn't, explain why, I might learn something new too.
Current phone Galaxy S22 Ultra
Previous phones: most S series, Note 2, Samsung Alpha, iPhone 3gs, far too many Nokia's!