Connection problem or Invalid MMI Code

[Da_Rog]

I took the SIM out of phone and put it in another phone and then put it back in my old phone and now I can't access my voicemail. please help. 

@ links to members

[Da_Rog]

Connection problem or Invalid MMI Code is the error message I am getting when I try to retrieve my voicemail messages. 

Nothing else is wrong.

[EB0]

@Da_Rog 

What error message do you get when you access your voicemail?

is everything else working? Can you make and get calls and messages?