G e t s t a r t e d8The module PIN is required to access the information in the security module of yourSIM card. The signing PIN may be required for the digital signature. The restrictionspassword is required when using the call restriction service.To define how your device uses the access codes and security settings, select Menu> Settings > Security.■ Enhancements, batteries, and chargersCheck the model number of any charger before use with this device. This device isintended for use when supplied with power from the AC-3U charger.Warning: Use only batteries, chargers, and enhancements approved byNokia for use with this particular model. The use of any other types mayinvalidate any approval or warranty, and may be dangerous.For availability of approved enhancements, please check with your dealer. Whenyou disconnect the power cord of any enhancement, grasp and pull the plug, notthe cord.1. Get started■ Insert SIM card and batteryAlways switch the device off and disconnect the charger before removing thebattery.This device is intended for use with the BL-5C battery. Always use original Nokiabatteries. See ”Nokia battery authentication guidelines” on page 46.