The vivo X21 UD supports 5 codecs (aptX HD, LDAC, AAC, aptX, SBC). The Samsung R730 Transfix supports 1 codec (SBC).
| Codec | vivo X21 UD Details | Change |
Samsung R730 Transfix Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | Yes | No |
| LDAC | Yes | No |
| AAC | Yes | No |
| UHQ | No | No |
| aptX | Yes | No |
| SBC | Yes | Yes |
| Bluetooth Version | 5.0 | 2.1 |
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