The vivo X21i and QCY QY19 have 2 common Bluetooth A2DP audio codecs (aptX, SBC). The vivo X21i supports 5 codecs (aptX HD, LDAC, AAC, aptX, SBC). The QCY QY19 supports 2 codecs (aptX, SBC).
| Codec | vivo X21i Details | Change |
QCY QY19 Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | Yes | No |
| LDAC | Yes | No |
| AAC | Yes | No |
| UHQ | No | No |
| aptX | Yes | Yes |
| SBC | Yes | Yes |
| Bluetooth Version | 5.0 | 4.1 |
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