I recently bought a new Iphone 12 & upgraded my sim to 5G. Since then my
network signal is weak. It is only ever 2 or 3 bars. Before the change I
had a very strong signal
Hi M15, many thanks for such a quick response & your suggestion. I've
switched back to 4g & switched the phone off/on again & still no
improvement. I followed the O2 online guidance to no avail as well
before I posted. Might have to call them if I ge...
