Audio profiles
This setting is under "Menu" -- "Settings" -- "Profiles". Here you can select and configure the type of ringtone for calls, vibration, volume level, message tone, etc. There are several profiles defined and by default the selected profile is Normal.
With the cursor keys you can move between the available profiles and confirm your selection with the centre key.
Select a profile and click on "Options" to customise it: modify the volume and ringtone and other sounds.
If you need to temporarily turn off ringtones/meetings, events... you can do it quickly by pressing and holding the "#" key. It stays in Silent mode, with the vibrator activated. In the same way, press and hold that key again to activate the tones.
Phone settings
This and the following options are in the "Settings" -- "Phone settings" menu.
Here you can set the time, date, language, shortcuts (shortcuts with the cursor keys), Auto On/Off, battery status and restore to default settings.
Security
Configure and modify security and privacy settings and codes such as SIM card PIN, phone and screen lock, FDN (fixed operator dialling numbers) and change security password. The default security password is 1234.
One of the options is "Privacy", which allows you to set a password lock to access certain functions.
Reset configuration
This option is under "Settings" -- "Phone settings". It allows you to reset the phone settings to factory default. It requires the phone settings password, which by default is 1234.