Samsung S500i User Guide - Page 68

Solving Problems The phone starts beeping and "Battery Low" flashes on the display The battery is insufficiently charged. Replace the battery and recharge it. The audio quality of the call is poor • Check the signal strength indicator on the display ( ); the number of bars indicates the signal strength from strong ( ) to weak ( ). • Try moving the phone slightly or moving closer to a window if you are in a building. No number is dialled when you recall a Phonebook entry • Check that the number has been stored correctly, by using the Phonebook Search feature. • Re-store them, if necessary. If the above guidelines do not help you to solve the problem, take a note of: • the model and serial numbers of your phone • your warranty details • a clear description of the problem Then contact your local dealer or Samsung after-sales service. 130 Access Codes There are several access codes that are used by your phone and its SIM card. These codes help you protect the phone against unauthorised use. Some access codes can be changed using the Security menu option (Menu 4.4). See page 84 for further details. Phone Password The Phone lock feature (see page 85) uses the phone password to protect your phone against unauthorised use. The phone password is supplied with the phone and is preset to "00000000" at the factory. To change the password, use the Change password menu option (Menu 4.4.4). See page 85. PIN The PIN (Personal Identification Number) protects your SIM card against unauthorised use. It is usually supplied with the SIM card. When the PIN Check feature is enabled (see page 84), you must enter the PIN each time you switch on the phone. If you key in an incorrect PIN three times in succession, key in the PUK and press the Ok soft key to unlock the phone. Key in a new PIN and press the Ok soft key. Key in the new PIN again and press the Ok soft key. 131