Visual Voicemail Not Working for newly activated iPhone
My new iPhone 13 recently got activated by Xfinity Mobile (with same number ported from AT&T with my old iPhone SE), but the Visual Voicemail never shows up in the Phone app. Under the Voicemail tab, I can see "Call Voicemail" button, but there was no "Set Up Now" button.
I can click this "Call Voicemail" button (or dial *86) to set up Voicemail password and listen to voice messages; Voicemail seems to work just fine by dialing in. However, I can't see any caller numbers or any voice transcription.
Now whenever I receive a voice message or exit from Voicemail, I would instantly receive an automatic text message, and they might be related to Verizon Wireless Visual Voicemail (VZWVVM):
"//VZWVVM:SYNC:ev=NM;id=7;c=1;t=v;s=1xxxxxxxxxx;dt=08/06/2022 14:17 -0700;l=4;dev_t=5" (I replaced phone number by xxxxx here)
I have spoken/chat with at least 4 Xfinity Mobile customer service members and spent many hours trying to figure out a solution; I followed their instructions like resetting network, turning my phone on/off, waiting, etc... But none of these methods worked. One person told me that even Tier 2 support could not solve my problem as Visual Voicemail has been disabled somehow.
Now I have to guess some settings during the porting process from AT&T to Xfinity were not correctly configured in the backend. Please help!