What is Hi-Fi mode?
What is DeepField audio effect?
Which phones support Hi-Fi?
Which phones support Apt-X?
How to adjust the Audio effect?
How to turn on/off Hi-Fi?
How to adjust Equalizer?
How about the quality of Hi-Fi and power consumption when Hi-Fi is on?
How to turn on DeepField audio effect?
Why is Hi-Fi turned off automatically when the capacity of the battery is less than 10%?