I recently bought the iphone 6 after I upgraded from a Samsung Galaxy S4. On the Galaxy I had a voicemail app called Phone Fusion. I recently deactivated my account with that. However, I am unable to receive voicemail on my iphone 6. When people call my number and try to leave a voicemail a message says that this number is not in service Message MI801. Help. What do I do? I set up my greeting on my phone. I can't receive voicemail.