Audio profiles
This setting is in "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 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 disable ringtones/meetings, events... you can do it quickly by holding down the "#" key. It changes to Silent mode, with the vibrator activated. Similarly, press and hold that key again to activate the tones.
Telephone settings
This option and the following ones are inside the "Settings" menu --> "Phone settings".
Here you can set the time, date, language, Shortcuts (shortcuts with cursor keys), Auto Power 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 (operator fixed dialling numbers) and security password change. The default security password is 1234.
One of the options is "Privacy", which allows you to set a password lock to access certain functions.
Restore settings
This option is in "Settings" --> "Telephone settings". Allows you perform a factory reset of the telephone settings. The phone settings password is required, which is 1234 by default.