No HD voice in 3G calls (AMR-WB codec)

Please tell us some basic information before asking for help:

  1. Model Name: Zenfone 6
  2. Firmware Version: WW_18.0610.2101.127
  3. Rooted or not: not rooted
  4. Frequency of Occurrence: always
  5. APP Name & APP Version (If your issue relates to the app):

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.

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Hi,

This is a followup to my previous post https://zentalk.asus.com/en/discussion/41828/hd-calls-in-3g-not-working#latest

I have since updated to Android 11 and also did a factory reset, and still do not have AMR-WB codec enabled in any call.

From what I have read in several developer forums, this is a parameter in the modem settings configuration, which are not configurable by the user without rooting the phone, something I'm not willing to do, and of course shouldn't have to.

I'm really disappointed that this does not work in the Zenfone 6, being a such a recent phone. I haven't had this issue with any phone in the last years, all of them properly supported AMR-WB, even my old nokias.

Can this be checked with the development team? I want to think it is just an overlook, because it really doesn't make any sense to ship a phone with AMR-WB disabled nowadays.

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