When I call my voicemail, I do not hear the prompt " Please enter your 4 digit code..." and then after a minute hangs up on me. Please advise how I can get my voice mail working again.
Are you calling *86? Try calling your full 10-digit phone number from your phone.
Or try calling your # from a landline or other phone. Do you hear your greeting? If you do, then press # to interrupt the greeting, and it should take you into your voicemail.