I don't have 4G signal on my iPhone 12 in London even my mate is usging Giffgaff and getting a O2 4G singal. Im sure my APN setting is correct (payandgo.o2.co.uk payandgo password) and device has no issue. And network model selected 4G. Is there anyone can help?
Solved! Go to Solution.
Track usage, upgrade and get support with the My O2 appDownload My O2