The alcatel One Touch Tab 7 HD supports 1 codec (SBC). The vivo X21 UD supports 5 codecs (aptX HD, LDAC, AAC, aptX, SBC).
| Codec | alcatel One Touch Tab 7 HD Details | Change |
vivo X21 UD Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | No | Yes |
| LDAC | No | Yes |
| AAC | No | Yes |
| UHQ | No | No |
| aptX | No | Yes |
| SBC | Yes | Yes |
| Bluetooth Version | 2.1 | 5.0 |
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