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HD Voice over VoLTE or Wifi-Calling Orange PL

Star II
Please tell us some basic information before asking for help:
Model Name: ZenFone7 Pro/ZS671KS
Firmware Version: Android 10
Rooted or not: no
Frequency of Occurrence: in place
APP Name & APP Version (If your issue relates to the app): n/a
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.

Hello. I bought ZenFone7 Pro/ZS671KS recently and don't have any HD voice feature enabled on my phone. Call quality is very poor. My operator is Orange Poland. Is there any way to make it better?


Star II
OK, so I see everybody doesn't care about Zenfone 7 support - gone very fast. In case of newer phone (Zen 😎 there are some adjustments but in case of 7 there is silence already.