Monday
Really looking to buying this phone. A few key features I'm looking for if available on this phone. Are XPAN, which is used for earbuds that support WiFi. And The newer Aptx Adaptive R3, which supports Aptx Lossless at 24/48khz at potential 2.1mbps transmission rate.
Tuesday - last edited Tuesday
I just connected my ROG Phone 9 to my Fiio BTR17 and it does not show the AptX-LS name on the display like it does when paired with my ROG Phone 7 or Creative BT-W6 usb-c dongle. I'm almost 100% sure it's because the ROG Phone 9 does not make 44.1KHz available when using AptX Adaptive. AptX lossless at 48KHz is only supported over LE audio when the receiving device has a QCC5181 chipset and I don't think there is a single product that actually implements AptX adaptive/lossless over LE audio.
So really it doesn't support any form of AptX lossless even though it's advertised.
Wednesday
Check Qualcomm Codec Preference settings Make sure 24/96 quality setting is not enabled. That will force Aptx Adaptive over Aptx Lossless
Wednesday - last edited Wednesday
It's disabled and I already manually changed to 48KHz sample rate using the bluetooth codec changer app. 44.1KHz is not an available option on my Rog phone 9 but it is on my 7.