The Bluetooth of Huawei P20 is BT4.2, supports BLE, supports Apt-X, and supports AptX HD, LDAC and HWA high-definition audio.

1. BLE: Bluetooth Low Energy (Bluetooth Low Energy, or Bluetooth LE, BLE, the old trademark Bluetooth Smart) is also called Bluetooth Low Energy.

2. Apt-X: Apt-X is a digital audio compression algorithm based on subband ADPCM (SB-ADPCM) technology. In the field of Bluetooth wireless audio transmission, apt-x has the advantages of low latency, good fault tolerance, and high sound quality.

3. AptX HD: Allows better high-definition sound quality. Supports audio at 24bit/48khz. Compression is still at a 4:1 ratio, with a bitrate of 576 kbps.

4. LDAC: can transmit about 3 times the data of ordinary Bluetooth*1 (at the highest transmission speed of 990kbps*2), allowing you to enjoy Hi-Res Audio*3 music wirelessly , you can listen to sound quality close to Hi-Res Audio.

5. HWA: Huawei's self-developed high-definition Bluetooth transmission protocol, based on LDHC codec, is slightly better than Qualcomm aptxHD and Sony LDAC. The three originally belong to the same sound quality level.

Extended information

From the current Bluetooth wireless sound quality technology on the market, Qualcomm and Sony are developing better, but aptxHD and LDAC have not been updated for many years, so this time Huawei HWA standard can Coming from behind is also a big step forward for China.

The current bottleneck of Bluetooth sound quality wireless transmission in the industry is not the higher standard of sound quality, but how to maintain a stable and normal use distance and experience under the high-quality standard. After testing, the Huawei HWA standard has shown this It performs well and is very stable.

Reference: Baidu Encyclopedia - Apt-X