Nokia 7900 Prism

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G e n e r a l   i n f o r m a t i o n
■ Enhancements
A few practical rules about accessories and enhancements:
• Keep all accessories and enhancements out of the reach of small children.
• When you disconnect the power cord of any accessory or enhancement, grasp 
and pull the plug, not the cord.
• Check regularly that enhancements installed in a vehicle are mounted and are 
operating properly.
• Installation of any complex car enhancements must be made by qualified 
personnel only.
Warning: Use only batteries, chargers, and enhancements approved by Nokia for 
use with this particular model. The use of any other types may invalidate any 
approval or warranty, and may be dangerous.
For availability of approved enhancements, please check with your dealer. When you 
disconnect the power cord of any enhancement, grasp and pull the plug, not the cord.
■ Access codes
Select Menu > Settings > Security to set how your phone uses the access codes 
and security settings.
• Keypad lock (keyguard) prevents accidental keypresses:
1. To lock the keypad, with the fold open, select Menu > * within 3.5 seconds.
2. To unlock the keypad, with the fold open, select Menu > * within 1.5 
seconds. 
To answer a call when the keypad is locked, press the call key. When you end or 
reject the call, the keypad locks automatically.
You can also select Menu > Settings > Phone > Automatic keyguard or 
Security keyguard > On or Off. If the security keyguard is on, enter the security 
code when requested.
• The security code (5-10 digits) helps to protect your phone against 
unauthorised use.
• The PIN code, supplied with the SIM card, helps to protect the card against 
unauthorised use.
• The PIN2 code, supplied with some SIM cards, is required to access certain 
services.
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