Troubleshooting for Nokia C5 5MP

PIN (Personal Identification Number) codes:
- PIN code protects your SIM card against unauthorized use. It is asked when you insert the SIM card and boot up the device for the first time. It is from 4 to 8 digits long and usually supplied with your SIM card. However, it is recommended to change the original PIN code to your own, the instruction on how to change the PIN code is provided in the user guide or Nokia Web site. 
- PIN2 code is also 4 to 8 digits long and is supplied with some SIM cards, and is required to access certain services.
- If you enter any of the above PIN codes incorrectly three consecutive times, you need corresponding PUK codes to unlock them. Read more about PUK codes below.

PUK (Personal Unblocking Key) codes:
- PUK code is 8 digits long and is required to change a blocked PIN code.
- PUK2 code is required to change a blocked PIN2 code.
- The PUK codes are also provided by your network operator.

Restriction code / Restriction password:
- The restriction code or restriction password may be required when using some network services, such as call restriction service. Note that not all network operators support such service.
- If your device display "Enter restriction code" when you insert a new SIM card, it means that your device has been locked to use a certain operator's network and it does not accept SIM cards from other operators.
- Contact your network operator for assistance.

Other PIN codes:
- The module PIN is required to access the information in the security module of your SIM card.
- The signing PIN may be required for the digital signature. 
 
Important! If you do not know or you have forgetten any of these codes above, always contact your network operator. Keep all the codes in a safe place separate from your phone.

Lock code / Security code / Password:
- These codes protect your phone from unauthorised use.
- The default lock code or security code supplied with the phone is usually 12345. For Nokia N9 and Lumia devices there are no default codes. It is recommended to specify the code of your own. The instruction on how to change the code is provided in the user guide.
- If you get error notifications after entering the code too many times incorrectly, reboot the phone and wait for 15 minutes, then try again.
- If the problem persists, contact your local Nokia Care Point. The contact information can be found from your local Nokia support web pages.

PAC (porting authorisation code) code:
- This code is used by some mobile network operators to facilitate mobile number portability. The code allows you to transfer your existing mobile phone number from one mobile phone network provider to another mobile phone provider so that if you change mobile phone networks you do not have to give everyone a new number. You can keep your existing mobile phone number.

If you have forgetten or you have lost the lock code or security code, try first the default lock code 12345. If it is not accepted, contact the nearest Nokia Care point to unlock your device. To find nearest location to you, go to your local Nokia website, and navigate to Support > Contact us.

You can format your device by typing *#7370# in standby mode. Before the device is reset, you may need to provide the lock code. The default lock code is 12345.

IMPORTANT NOTICE!

• Formatting the device will permanently erase all user data and settings as well as add-on applications and operator specific settings.
• If you have made a backup of the device data, the data can be restored from the backup after formatting but some add-on applications can have restrictions that they are not restored from the backup.
• If you use formatting to repair faulty behaviour of the device, restoring the backed-up data files may restore the unwanted behaviour as well. In that case, a partial restore may resolve the situation.
• The contents of the SIM card and memory card (MMC) are not erased during formatting. Note, however, that in some device models (e.g. Nokia N8-00, E7-00, E6-00, C7-00 and X7-00) the internal mass memory E: will be formatted in this situation. It is therefore important that you back up all your data from the E: mass memory before resetting the device. Use Nokia Suite to back up the contents to your PC.
  

Your Nokia device requests PIN (Personal Identification Number) and PUK (Personal Unblocking Key) codes to protect your SIM card and device against unauthorized use. Note that all PIN and PUK codes are provided by your network operator. Nokia is not able to provide you PIN or PUK codes.

Please note the following:

• When your insert your SIM card and boot up your device for the first time, you need to enter the PIN code. For security reasons it is recommended to change it to your own code, instructions on how to change the PIN code in your device is provided in the user guide or Nokia web site. If the PIN code is entered incorrectly multiple times, your device may request a PUK code to futher validate the user's identity and to unlock and change the blocked PIN code.
• The PIN2 code is a PIN code which acts as a second layer of protection for certain features of your phone.  If the PIN2 code is entered incorrectly multiple times, your phone may request a PUK2 code.

If you have forgotten or simply do not know the codes, you must contact your Network Operator for assistance. However, if you have already contacted but the code does not work, you should consider getting a new SIM card from your Network Operator.

Use the following guidelines to increase your battery life time:

• Turn Bluetooth off when you do not need it.
• Specify that your Nokia phone does not scan, or scans less often, for available Wireless LAN (WLAN) networks in the backround when you do not need WLAN connections (to turn off scanning, disable Show WLAN availability in Wireless LAN settings). 
• If you have set Packet data connection to When available in connection settings, and there is no packet data coverage (GPRS), your Nokia phone periodically tries to establish a packet data connection. To prolong the operating time of your Nokia phone, select Packet data connection > When needed.
• The Maps application downloads new map information when you scroll to new areas on the map, which increases the demand on battery power. Prevent the automatic download of new maps.
• If the signal strength of the cellular network varies much in your area, your Nokia phone must scan for the available network repeatedly. This increases the demand on battery power.  If the Network mode is set to dual mode in the network settings, the Nokia phone searches for the UMTS network. To use only the GSM network, select Network mode > GSM. 
• The backlight of the display increases the demand on battery power. In the display settings, you can change the time-out after which the backlight is switched off, and adjust the light sensor that observes lighting conditions and adjusts the display brightness.
• Leaving applications running in the background increases the demand on battery power. Close the applications you are not using.
• Turn off vibrate function of your Nokia phone, using just the ring tone.
• Avoid using moving or animated pictures or videos for your Nokia phone's background.
• Turn off your Nokia phone whenever you do not plan to answer any calls, for example while you are sleeping.

• Make sure your phone is running the latest software. For downloads and assistance, go to your local Nokia website's support page.

If the battery loses the power fast even though there is no features consuming the power, the battery may be wearing out and you need to replace it with a new one. 

There are several ways to find the IMEI number (15 digits) of your phone, for instance:

1. Dial *#06# (works for most of Nokia phones).
2. Remove the back cover and battery, and see the label on the battery holder (for Nokia phones with removable battery).
3. Look on or beside the SIM tray (Nokia Lumia phones).
4. See the label on the sales package box (all Nokia phones).

Contact your operator immediately:

1. To block your SIM card.
2. To block your Nokia device (HW, IMEI code) to prevent it being used in the operator networks with any other SIM cards.  Note that not all operators provide this service (blocking device).

Note: Nokia customer support doesn't have the possibility to block the SIM card or the device, or track a stolen device.

To minimize the risks caused by the theft or loss of the device, there are some security features which you can enable in your device:

1. If your Nokia device supports phone autolock or security keyguard and you have turned it on, the phone cannot be accessed without entering a correct lock code. When enabling the autolock feature, it is important that you change the default lock or security code (12345) to your own lock code and don't forget this code.
2. Some Nokia devices support also remote locking. If you have enabled this feature, you can send a pre-defined text message to your device and lock it remotely. The device is locked if it is switched on and has your SIM card in it.

Note that the phone autolocking and remote locking cannot be enabled after the device has been lost, so it is important that you enable these security features already when taking the device in use.

1. Restore the original factory settings on your Nokia phone. For information on how to do this, see your Nokia phone's user guide (your personal data is not deleted in the reset). Retry.
2. Contact your network operator to check that Internet browsing (data connection) is included in your service contract (SIM card). Also verify that roaming is supported when you are not within your home network.
3. Make sure your Nokia phone is running the latest software. For downloads and assistance, go to ýour local Nokia website's support page.

Nokia aims to have software updates available for every single phone and we share information about the latest software for different models on your local Nokia website (software update section in the support page). To find out if an update is available for you, just

• connect your phone to Nokia Suite and select Tools > Software updates
  or
• open the Software Update application on your phone. For most devices, you will find this application under Menu > Settings > Phone > Phone updates or Menu > Applications > (Tools >) SW Update. If you don't find the software update application from these locations, check the correct location from the user guide.

Update availability is influenced by many factors including existing Nokia device firmware version, country, and operator. It may be due to one of these variables, that there currently is no new firmware update available for your phone. For example if your mobile service provider hasn't approved the latest Nokia device firmware, it isn't available for that specific operator variant you are using but it can be available for a generic country version your friend is using.

New firmware may become available later, so it's best to setup your device in a way that it automatically informs you when a new software version is available. You can do this in the following way:

To check the unique Wireless Local Area Network (WLAN) Media Access Control (MAC) address that identifies your Nokia phone, enter *#62209526# in the idle mode (or with touch screen phones after opening the dialler).