APTX is an extension to the Bluetooth SBC stack, supported by a Qualcomm chip, and provides higher bandwidth (higher quality) to wireless audio devices. This APTX stack has recently evolved into APTX-HD, which essentially is an improvement on the original APTX codec. There is a new generation of headphones and other devices that now also supports APTX-HD (For instance the Bowers & Wilkins PX or Sony WH-1000XM2 headphones). They sound awesome on the LG G6 that already supports APTX-HD in Android 7. APTX HD however is a default add-on in Oreo. So I was wondering whether Samsung has allowed that codec in their implementation of Oreo.
That's because Sony has licenced *Google* (for free) to use LDAC codec in Oreo on *any* phone (it used to work only on Sony phones).Only LDAC is a default add-on which WILL be present in the Oreo update. Aptx-HD still requires licensing fees and MIGHT be present in the Oreo build.