on 05-04-2025 13:42
I am having problems with my WiFi wouldn’t connect anywhere until I did a re-set but now WiFi is really slow
on 05-04-2025 13:51
Assume you mean mobile data and not WiFi (that's from your home broadband and nothing to do with O2)
Guide: How can I sort out my network issues?
Guide: Is the network down for me or everyone?
Also download and use to track and report network faults
https://www.o2.co.uk/apps/my-network