Since last night, I cannot seem to make or receive calls on my Samsung Galaxy S20/O2 network, including accessing voicemail messages. It started last night. At first I thought it was just a coverage issue in the area I was in (Edinburgh), but I am having the same problem today at home. The phone functions perfectly well in all other regards. There are no billing issues that I am aware of. Is there a network issue?
Calls show up on the phone, but as soon as I try to answer, they disappear. Apparently when I make calls, I am immediately cut off when the other side answers
