For a codec to work, it needs to be supported on both the sending and receiving ends. If your earbuds support aptX, for instance, but your phone doesn’t, you won’t be able to use the aptX codec.

thanks to the addition of hi-res support to the company’s aptX Lossless Bluetooth codec. Until now, aptX Lossless — which requires Qualcomm’s Snapdragon Sound technology on both sides of the ...

There are various Bluetooth Audio Codecs like SBC (Subband Coding), AAC (Advanced Audio Coding), aptX, and LDAC (Low-Delay Audio Codec). The codec being used depends on which one is supported by ...