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Unable to turn on Hi-Fi

Do Bluetooth earphones support HiFi?

What is DeepField audio effect?

What is Hi-Fi mode?

Which phones support Hi-Fi?

Can the HiFi effect be realized through software update?

What does Super Audio do?

Can the DeepField Audio Effect be used in the speaker mode?

What are the Ear-customized Sound Effects?

How to adjust the Audio effect?

How to use ear-customerized sound effects?

How to turn on/off Hi-Fi?

Which vivo Phones support LDAC?

Which phones support Apt-X?

Can I use the HiFi function when I use the speaker to play music?

What if the HiFi effect fails?

How can I enable Super Audio?