Your "discovery" is because you now have a BT receiver capapable of relaying the aptx-HD codec. The LG v20 isnt just capable "now" - it was built with the chip that makes it capable. Of course that chip wasnt available before OS of old. CSR of course makes newer chips backwards compatible with older BT technology, but the hardware is needed for the codec tx/rx. Its a SoC situation. Your phone was capable of it, but both sides need the hardware (and "software" built into the chip) for it to work. "Believe" what you want, everyone on this thread also believes that SPL's are the only factor in sound quality!