Change The Volume; Access Codes - Nokia 900 User Manual

Do not connect products that create an output signal, as this may damage the device.
Do not connect any voltage source to the audio connector. If you connect an external
device or headset, other than those approved by Nokia for use with this device, to
the audio connector, pay special attention to volume levels.

Change the volume

Press the volume keys up or down.
The volume keys control all sounds, including the volume of alarms and reminders.
The built-in loudspeaker allows you to speak and listen from a short distance without
having to hold the phone to your ear.
Switch the loudspeaker on or off during a call
Select .

Access codes

PIN code
(4-8 digits)
PUK code
(8 digits)
IMEI number
(15 digits)
Lock code (security
code)
(min. 4 digits)
This protects your SIM against unauthorized use or is required
to access some features.
You can set your phone to ask for the PIN code when you switch
it on.
If not supplied with your card or you forget the code, contact
your service provider.
If you type in the code incorrectly three times in a row, you
need to unblock the code with the PUK code.
This is required to unblock a PIN code.
If not supplied with your SIM, contact your service provider.
This is used to identify valid phones in the network. The
number can also be used to block, for example, stolen phones.
You may also need to give the number to Nokia Care services.
To view your IMEI number, dial *#06#.
This helps you protect your phone against unauthorized use.
You can set your phone to ask for the lock code that you
define.
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