The Asus Zenfone 4 Pro ZS551KL supports 2 codecs (aptX, SBC). The vivo Z3i supports 5 codecs (aptX HD, LDAC, AAC, aptX, SBC).
| Codec | Asus Zenfone 4 Pro ZS551KL Details | Change |
vivo Z3i Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | No | Yes |
| LDAC | No | Yes |
| AAC | No | Yes |
| UHQ | No | No |
| aptX | Yes | Yes |
| SBC | Yes | Yes |
| Bluetooth Version | 5.0 | 4.2 |
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