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Unable to turn on Hi-Fi

How can I enable Super Audio?

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

Do Bluetooth earphones support HiFi?

What is DeepField audio effect?

Which vivo Phones support LDAC?

Which phones support Hi-Fi?

What does Super Audio do?

How to adjust the Audio effect?

Which phones support Apt-X?

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

Can the HiFi effect be realized through software update?

What if the HiFi effect fails?

What are the Ear-customized Sound Effects?

How to use ear-customerized sound effects?

What is Hi-Fi mode?

How to turn on/off Hi-Fi?