volume

When you are in a call, press S right to increase earpiece speaker volume, left to decrease it. When the phone display is idle, press S right or left to increase or decrease ringer volume.

Tip: During a call, you can set your phone to mute by pressing M > Mute.

navigation key

Press the navigation key S up or down to scroll and highlight options.

codes & passwords

Your phone's 4-digit unlock code is originally set to 1234. If your service provider did not change these codes, you should change them:

Find it: Press M > Settings > Security > New Passwords

You can also change your SIM PIN or Bar Password.

If you forget your unlock code: Try entering 1234 or the last four digits of your phone number.

If you forget other codes: If you forget your SIM PIN code, PIN2 code, or bar password, contact your service provider.

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Motorola C123 manual Volume, Navigation key, Codes & passwords