I have been experimenting with the DIGITS app on my Google Pixel. I have been experiencing the issue with the no voicemail notification when a voicemail is left for the DIGITS number. I have figured out that if I leave the app running in the background, by that I mean not hitting the back button and go straight to the home screen, I receive voicemail notifications every time. If I close the app by hitting the back button "exiting out of" I will receive SMS notifications and missed calls notifications but not voicemail notifications. To add I also cannot receive notifications from the T-Mobile visual voicemail app. They appear and then about 2 seconds later they disappear. Hopefully this will help figure out what is going on.
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