As per the title, my Samsung Galaxy S7 on Koodo is having a problem where I am not receiving any calls (there is no notification and callers are directed straight to my voicemail) and I cannot place any outgoing calls. I cannot even call into my own voicemail. When I try to place an outgoing call, the call screen comes up and it says it is "Dialing". However, there is no dial tone or any sound and after about 20 seconds the call stops.
This is the second time I have had this problem. The first time it lasted for about a day, a few months ago. It resolved itself before I was able to determine the cause of the problem. This time the problem has lasted for approximately two days so far. I have not noticed any other problems or symptoms with the phone. I have full strength signal and I can use data and other apps fine on both wifi and the mobile network.
I am interested in determining the cause of the issue and would like to find a way to resolve it. Thank you very much.