With the Sony Music Center app, you can prioritize Codec LDAC on WH-100XM3 headphones and on the smartphone. On the Sony Hodephones Connect app, it is possible to see which codec is selected on the headset.
On AudioTrack Output, 16Bit / 44Khz is selected on Poweramp. I can manually select sample rate of 96khz and bit per sample to 32bit on settings on deveplorer option on the smartphone.
You know, play menu (showing track name, album artwork and artist name). On output it does not show Hi-Res name. It shows AudioTrack Output 16bit / 44khz or AudioTrack Output 32bit / 96khz.