Problems related Display

Mobile phones are our needs in today's life. Sometimes We are facing problems in them and we havn't time for visit to service centre to sort out problems in our device, today I am going to tell about some problems relsted to display, if you have any other problem that is not sorted in this post, you can ask me,,

Q.1.There is a blinking envelope icon on the display of my Nokia device. Why? 

Ans.The blinking closed envelope icon indicates the SIM card message memory is full.

Select Menu > Messaging > Options > (View folders > Options) > SIM messages and delete one or more SMS messages.
Note 1: Class 2 messages (for example, service messages from operators) are stored in the SIM card message memory. Once the SIM card message memory is full, Class 2 messages can't be received.
Note 2: You have used a Nokia S40 product before. In S40 products the SIM card message memory is filled before the device message memory. If you insert a SIM card with full message memory to another device, a blinking message icon appears on the display of your Nokia device.
Note 3: Other reason could be that there is not enough free memory available on the device to store the new message. To release a space go to Messaging > Inbox and remove unnecessary messages

Q.2.The display of my Nokia phone is broken (stripes, distorted view). What should I do?
Ans.Restart your phone. If the display is still not looking normal,  please see the repair options at your local Nokia support pages.
 

Q.3.My Nokia phone displays "SIM card rejected" or "SIM card unaccepted". What can I do? 
Ans.These kind of messages are displayed in the following situations:

• The SIM card may be out of alignment. If the phone has recently been dropped, bumped, or opened, the SIM card may need adjusting. Follow the SIM card installation instructions in your user guide.
• The PUK (Personal Unblocking Key) code is entered incorrectly multiple times. This can inactivate the SIM card. If inactivation appears to be permanent, contact your operator or service provider for a new SIM card.
• You have recently changed your operator or mobile service provider. In this case, either your SIM card or your phone settings may have been configured for your previous operator and therefore reconfiguring is needed. It may also be that your phone is simlocked, so using a SIM card from a different operator or service provider is prohibited. Please contact your current operator or service provider for further assistance.
  If none of the situations above apply and you continue to receive this error message, your SIM card may be damaged. Please contact your operator or service provider. 

Q.4.Why does my Nokia Lumia's screen turn black when in a call?
AnsYour Nokia Lumia phone has a proximity sensor located on the upper part of the front side. When you are in a call the proximity sensor turns off the touch screen to prevent accidental presses. Any object cover the sensor may cause detection.

You can take the following steps to check the issue:

1. Make or receive a call with the phone.
2. Once the phone is in a call place your hand 1cm above the screen and display will turn off.
   
3. Remove your hand from above the proximity sensor area and display shall turn back on.
   
4. Repeat the test steps 1,2,3 for 3 times to verify the proximity sensor function.

Q.5.Why doesn't the touch screen respond when I tap it in my Nokia N97, N97 mini or C6-00 phone?
Ans.If there is no response when tapping the touch screen, check the following:

1. Check that the device is not locked. When the device is locked, you must use the lock switch to unlock and wake up the screen.
2. If the device is not locked but only the display light time-out has expired and the display has dimmed (a situation which may occur if Keypad autolock feature has been disabled), the touch screen can be woken up by pressing any mechanical keys like menu key, volume keys, camera key or the lock key (lock key needs to be pressed twice because the first press of the key will lock the device).
3. If in a phone call, check that the proximity detector at the upper front corner of the device is not covered. The proximity sensor will lock the touch screen to avoid unintended touch screen actions during a phone call when placing the device next to your ear. Check that the proximity detector is not covered if trying to use the touch screen while a phone call is active. 
4. Remove the battery and reboot the phone.
5. If there is a memory card in the phone, try booting up without the memory card.
6. If your phone supports touch screen calibration, try to re-calibrate the touch screen (select Settings > Phone > Touch input > Touch screen calibration).
   If the touch screen doesn't yet respond, try restoring the factory settings. If you cannot access the factory settings menu via the touch screen (Settings > Phone > Phone mgmt. > Factory settings), try entering the following reset commands via the keyboard. Before resetting the device, take a backup of your phone via Nokia Suite.
   

• *#7780# (try this first, it will do a soft reset).
  
• *#7370# (try this if the above command doesn't help, this command will do a hard reset).
  If the touch screen is not yet working properly, take the phone to Nokia care point for inspection.
  

Q.6.How do I find the IMEI number of my Nokia phone?

Ans.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. See the label on the back cover (for phones with non-removable battery).
3. Remove the back cover and battery, and see the label on the battery holder (for phones with removable battery).
4. See the label on the sales package box.

Q.7..How can I prolong my battery life on my Nokia phone?

Ans.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.