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Spotify Lossless requires wired connections, not Bluetooth, to actually work

Spotify's new Lossless tier delivers CD-quality, uncompressed audio, but Bluetooth connections can't transmit a true lossless signal, meaning wireless earbuds and speakers won't benefit. Listeners need wired headphones, USB-C earbuds, wired computer speakers, or Wi-Fi-based Spotify Connect devices to actually hear the improved quality, and even then, cheap audio hardware may not reveal a noticeable difference.

Apple Music's Lossless streaming can be tuned to save cellular data

Apple Music lets users set separate audio quality levels for cellular, Wi-Fi, and downloads within iPhone Settings under Apps > Music > Audio Quality. This allows listeners to save mobile data by keeping cellular playback at High Quality while reserving Lossless streaming for Wi-Fi or downloaded files. Bluetooth headphones don't support true lossless playback, and Hi-Res Lossless requires an external DAC for sample rates above 48kHz.