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I have an old Note 3 phone that I use as a music player. I am trying to find out if it supports the aptX Bluetooth codec. I turned on developer mode and all the instructions I can find online say to go to “Audio codec” under the “Developer Options” menu. I go to the “Developer Options” menu but there is no entry for “Audio codec.” On Android 5.0 are the codecs listed in a different place?

If it does not have aptX is that something that can be added?

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  • Related or possible duplicate android.stackexchange.com/questions/62737/…
    – Reddy Lutonadio
    Jan 30, 2021 at 3:51
  • aptX needs to be supported in hardware therefore it can not be added to an Android smartphone. At least for the non-US versions aptX support seems to present in Samsung Galaxy Note 3: forum.xda-developers.com/t/…
    – Robert
    Jan 30, 2021 at 11:44
  • @Robert Thanks for that info. Hopefully someone will answer how to look that up. The answer Reddy put as possible dupe doesn't make sense to me. Sometimes I think you have to go in and activate aptX.
    – Tom
    Jan 31, 2021 at 0:49
  • @ReddyLutonadio I have never used ADB. Maybe I can try that. It just seems there should be some way to look up the audio codecs without a third party tool. Maybe not.
    – Tom
    Jan 31, 2021 at 0:56
  • Have you tried Media Codec Info?
    – Reddy Lutonadio
    Jan 31, 2021 at 6:06

1 Answer 1

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The only way to check I found so far is in the Android Developer Options.

On some devices there is an entry named "Bluetooth-Audio-Codec". If this list contains an entry with "aptX" as shown in the following screen shot it should be sure that the device supports aptX:

enter image description here

The screen shot is from an Android 9 tablet. Not sure about older Android versions. It may happen that you don't have no "Bluetooth-Audio-Codec" entry in the Developer Options menu, in that case this method does not work for you.

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  • Don't know if this is universal, but /system/etc/bt_configstore.conf/ has many properties per platform. Each platform has a property named a2dpOffloadCapability whose value is those codecs. In my Oneplus 6, for my SoC/platform, the value is sbc-aptx-aptxtws-aptxhd-aac-ldac. They are exactly what listed in that developer option setting too.
    – Firelord ♦
    Feb 1, 2021 at 10:02
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    @Firelord I checked all my devices I have access to (4 in total from Sony, Lenovo, Samsung, Google running Android 8-11) and none of them had this directory, just the standard /system/etc/bluetoth/. Googling for bt_configstore.conf does not get you many results and most of them are related to Chinese Android manufacturer. Therefore this directory does not seem to be universal.
    – Robert
    Feb 1, 2021 at 10:20
  • Thanks for the info. And sorry, the full path was /system/etc/bluetooth/bt_configstore.conf. OnePlus is also a Chinese OEM so that clears things.
    – Firelord ♦
    Feb 1, 2021 at 10:56
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    @Firelord I made a full-text search in /system/etc/ for grep -Ri apt respectively grep -Ri aptx but no result :(
    – Robert
    Feb 1, 2021 at 11:13

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