Incoming call weirdness, maybe VoLTE trying to break out?

eddddedddd Level 2
edited June 2021 in ZenFone 7 Series

Please tell us some basic information before asking for help:

  1. Model Name: Zenfone 7 Pro
  2. Firmware Version:
  3. Rooted or not: No
  4. Frequency of Occurrence: Started happening suddenly until restart
  5. APP Name & APP Version (If your issue relates to the app): Plain old Phone Calling

In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.


Something weird happened with phone calls today. Firstly, I got calls where the phone never ringed. Okay, I thought, probably just spam. Then, later I got a real call, picked it up and could not hear anything. Got the same call 4 times and no audio at all, not even a beep. Later the person called me on another number/phone, which worked fine and told me that my voice sounded fine. So, the Zenfone somehow failed to play the voice audio. I tried switching to loudspeaker and back, did not help. Also tried changing volume. Then I restarted the phone and we tried again and this time the call worked fine. This is the first time I ever have an issue like this since last 5 years or so. The only thing that changed is that I bought the Zenfone.

Maybe this oddness is related to missing VoLTE? The person said my voice was loud and crisp. In later test I noticed the audio quality difference on Zenfone vs the other phone was night and day on my end.

I know this has been said a thousand times before, but... VoLTE... ? Might be a freak coincidence, but the thing with the restart was weird.

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