4) After selecting the language, hold the “=” icon on the right side of the target
language and drag it to the top, so to successfully select the language.
Reset options
"Reset WiFi, mobile & Bluetooth" will reset all network settings, including WiFi
and Bluetooth.
"Reset app preferences" will reset all preferences including the items shown in
the following picture.
"Erase all data", i.e. factory reset, will erase all data from your device's internal
storage, and all settings will be reset to default. Please back up your important
data before resetting.
FiiO Music APP
The M21 has built in the FiiO Music app, a professional audio playing application
specially developing for Android-based system and flagship-grade music players.
Homepage
FiiO Music APP will enter the homepage once it starts up as shown below.
FiiO Music will enter the homepage once it starts up as shown below.
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