A colleague texted me to say my voicemailbox was full. This was a surprise since I had zero archived and only two on the phone (according to the voicemal app). I cleared the data and the cache on the phone for voicemail and phone apps. Then I went on the phone (*86) and it turns out I had 18 more VMs!
Why are my voicemails not synching between the phone and the app? Do I need to rely on *86 and not trust the phone?