Verykool i604 - Manual (Page 50)

Restore Factory Settings
Access Settings to select Restore Factory Settings, and press
OK. All settings can be restored to factory settings with this
function. The default password is 0000.
User profiles
The phone provides seven pre-defined user profiles that allow
the operations of the phone to best suit the environment you are
in. The profiles are General, Silent, Meeting, Outdoor, and My
Style. The phone will automatically enter the headset profile if
you connect the headset to your phone.
Extra
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