In fact, many times we encountered the "white screen" phenomenon can be resolved by their own hands, that is, false "white screen", but the real "white screen" can only be resolved by Through the brush to solve. Here we are on the true and false "white screen" in two parts to provide you with a detailed exploration and published solutions:
A false "white screen" phenomenon of the solution:
If your NG appeared to be a system error or the so-called "white screen" phenomenon, the NG will be able to solve the problem.
If your NG has a system error or the so-called "white screen" problem, you can solve it by the following methods:
1. Try to turn on the device to solve the problem (if you can turn on the device normally, you can skip this step)
a. Remove the battery and SIM card, and if the background running program (e.g., T9) is not loaded on the E-disk, you can unload both the SIM card and the MMC card at the same time, and then leave it for a while before loading the battery and turning on the device. Then leave it for some time before installing the battery and turn on the device.
b. If the above method does not work, then please press and hold the pen key at the bottom right of the keyboard, and press and hold the power on button to turn on the phone, and then let go of the power on button after the "NOKIA" logo appears on the screen, and then you can enter the Safe Mode (the system will not enter the Safe Mode if it is running normally).
c. If the above method still does not work, then we have to hold down the pen shape, while holding down the boot key, and then quickly and uninterruptedly press the middle of the left keypad navigation keys, after the success of the cell phone can enter the menu interface. Apple high-fashion cell phone: /
2, formatting the phone to solve (if the phone does not have a system conflict or error prompts can skip this step)
The phone out of the standby interface, enter "*#7370#", the phone will appear "Restore all original settings? Device will restart", press "Yes", then enter the password "12345", and wait for the phone to reboot to restore factory settings. The device will be restarted.
II. Causes of NG false "white screen":
1, NG cell phone C disk use related problems:
a. In the NG game at the same time with other cell phones through Bluetooth to pass a 900KB file to the NG's C disk, the phone "white screen". ".
b. When I formatted the MMC card on my phone, I tried to copy the photos and data directly from the card to the C drive, and the phone prompted an error before I finished copying, and then the phone went to a "white screen" after restarting
c. After I deleted an unknown file from the C drive, the phone shut down and then turned on manually by pressing the arrow keys and the pen key. The screen only flashed the icon a few times, after that it was a white screen, then a black screen with no response.
Reason: The a.b mentioned in the article is due to the NG cell phone capacity is insufficient to cause the inability to boot "white screen", you can try to unplug the battery for a long time, with the above mentioned methods to solve, if you can not boot can only be resolved by brushing the machine. The c phenomenon mentioned in the article has been unable to start, can also only be resolved by brushing.
Tips: NG cell phone C disk to maintain a certain amount of space and capacity is to ensure that the system runs normally necessary conditions, if you need to install large-capacity files, please choose to install on the MMC card, please do not delete the files in the C disk.
2, Q9 and T9 input method related issues:
a. With NG in listening to MP3 when you receive a text message, directly switch to the Q9 menu to open, the results of the phone reboot prompted an error, but can be used normally, after a period of time, the phone can not be rebooted into the system, prompting the "Device start-up failed contact the retailer", the phone will not be able to enter the system, prompting "Device start-up failed contact the retailer". The phone is not working properly, but it's not working at all, so I'm not sure if it's a good idea to use it.
b.After using SeleQ to set up the downloaded Logo, the phone reboots, but cannot enter the system, after pulling out the battery and rebooting, there will be an APP error message, the Q9 or T9 input method does not work, and the text appears to be garbled, after deleting the input method and reinstalling it, the same problem occurs, and then the white screen.
Reason: The above two columns are false "white screen", usually with the "try to boot method" can be solved, after successfully booting the phone can be formatted to restore functionality.
Tips: Q9 and T9 input method is not specifically designed for NG, so that the two are not very good, but must be used, then Q9 running in the background will certainly be running in the background and some programs to cause conflict, and often open the operation of the closure of the more likely to be in conflict with other software, so the Q9 in the opening of the Q9 should not be arbitrarily shut down and uninstalled Q9 in use, so as not to increase the risk of white screen! The risk of a white screen will increase.
3, modify the operator Logo led to white screen related issues:
a. He made a picture on the computer, ready to be used as a logo, transferred to the phone with Sele Q settings, the phone white screen.
b.Replaced the system logo with a made and sized logo, restarted with SeleQ and got a white screen.
Reason: many players have reflected the change of Logo will make the phone white screen, some people think it is the problem of SeleQ, using the software method of reboot will cause a white screen, but many people more than once to modify the Logo, there is no problem, this case will be set to NG OFFILINE mode restart of the white screen after the same, the problem is generally solved by trying to boot method, if not, can only be solved by brushing the phone. If you can't then you can only brush the machine to solve.
Tips: Try to modify as little as possible or do not modify the system files.
4. Problems related to applications that are not closed before shutting down
Playing a game, pressing the hang-up button to exit and letting it run in the background, and then restarting the phone with a white screen an hour later.
Reason: the background running in the non-C disk program did not terminate the shutdown or restart, especially the MMC card compatibility is not good may also lead to system crash or error, such a situation can be used to try to open the method to solve, such as can not be only brush.
Tips: Avoid restarting your phone when the software is not running on the C drive, don't set up your phone to automatically run programs on the E drive (MMC card), and try to exit all programs running in the background before shutting down your phone.
5. Problems related to the use of MMC card:
a. When using SeleQ, the USB cable was inserted, the system immediately reported an error, and after restarting, the white screen.
b.Performed MP3 playback operation (music file is in MMC card) while using USB and computer, the result reported error, white screen after reboot.
c. Unintentionally plugged and unplugged the cable connecting the NG to the computer a few times, and when the NG menu key was pressed the screen flashed a few times and then could not be turned on.
Reason: the above three phenomena are occurring when the NG on the MMC card access control (different from the NG and MMC card recognition compatibility issues), such as the system and applications at the same time access to the MMC card or a number of devices (programs) at the same time access to due to the NG's own fragile memory card access mechanism, so that this type of white screen can not be resolved by itself, can only be resolved through the brush.
Tips: When using a USB cable to connect to a computer, try not to use the program inside the NG (e.g. SeleQ MP3 player, etc.) to access the MMC card.
6, hardware damage related issues:
Hardware damage to this case will also exist, is to try all the methods, and after brushing also did not see the effect of the time is the problem of hardware, the only way to solve the problem can only be replaced with repair
You if you have to use the flip cover or sliding cover of the cell phone, is likely to be the row line is broken or poor contact, if so, it is recommended to change the row line is good. This is recommended to change a row of wires will be good, about a few dozen dollars.
Cell phone wires, that is, the cell phone motherboard connected to the cell phone display line, the camera, keypad and the motherboard connection line is also wired. What you see on the display is controlled and output by the motherboard, and that's where the wiring comes in. It is responsible for the data transfer between the phone's motherboard and the display.
The cable is replaceable, but there are 2 types of cables.
1, there are not a lot of resistors and speakers and other things on the line (very small), such a line for about only 50 yuan, very cheap, change, you must remove all the small parts, and then re-soldered to the new line, this is very troublesome, need to be very good soldering skills.
2, the line comes with small parts, needless to say, directly connected to the can, about 150 ~ 200 yuan! But change the row of wires is still a relatively troublesome thing, to break down the machine all the way! So remind the future flip cover to be less times oh! Because the row line belongs to the consumable goods!
Mobile phone cable failure, the performance is more obvious: such as screen, no display, no light, no earpiece sound, no ringing, do not turn on the phone, key failure. Reduce the method of broken wires:
After the replacement of the wires, the transparent adhesive paper with scissors cut into the appropriate size of the adhesive strip, and then use these adhesive strips of the wires to the turn of the completely wrapped (because it is generally easy to break the line of the turn), wrapped to be uniform, to wrap a circle is appropriate, make sure not to wrap the too thick. Finally, in the row of wires through the case with a knife to flatten, cut a little wider. In today's cutting-edge electronics assembly boards, flex circuits are often the only solution to meet miniaturization and mobility requirements. Flex circuits (sometimes called flex printed circuits) are copper circuits etched onto a polymer substrate or printed polymer thick film circuits. Design solutions range from single-sided conductive circuits to complex multi-layer, three-dimensional assemblies for devices that are both thin and lightweight and whose structures are compact and complex. The total weight and volume of a flex assembly can be reduced by up to 70% compared to traditional round conductor wire harness methods. Flex circuits can also be made stronger by using reinforcement materials or backing plates for additional mechanical stability.
-Flex circuits can be moved, bent, and twisted Flex circuits can be moved, bent, and twisted without damaging the wires, and can conform to different shapes and special package sizes. The only limitation is the size and space. Because they can withstand millions of dynamic bends, flex circuits are well suited for inline systems with continuous or periodic motion, into? The final product is part of the functionality of the product. part of the product's functionality. Solder joints on rigid PCBs are subjected to thermo-mechanical stresses and fail after hundreds of cycles," said Randy Lia, product manager for Shel-dahl, Northfield, Minn. Randy Lia, product manager, said, "Certain products that require signal/power movement with small form factors/package sizes benefit from flex. products are benefiting from flex circuits."
-Flex circuits offer excellent electrical properties Dielectric properties Thermal resistance Flex circuits offer excellent electrical properties. Don friedman, CEO of Inter-national Flex TEchnologies, Endicott, New York, said. "The lower dielectric constant allows for fast electrical signal transmission; the good thermal properties make the components easy to cool down; and the higher glass transition temperature or melting point allows the components to operate well at higher temperatures."
- Flex circuits offer higher assembly reliability and ? Volume Flex circuits reduce the amount of hardware required for internal connections, such as solder joints, relays, backplane lines and cables commonly used on traditional electronic packages, allowing flex circuits to provide higher assembly reliability and? volume. Because of this, flex circuits can be used in a wide variety of applications. Complex multiple systems made up of traditional inline hardwares are prone to higher rates of component misalignment during assembly," said Mike Giesler, marketing manager for 3M Electronic Products Division, Austinm , Texas. "Flex circuits have low stiffness and low volume, which is precisely why? Flex circuit board components are smaller, so they use less material." With the advent of quality engineering, a flex system with a very thin thickness is designed to be assembled in only one way, thus eliminating many of the people normally associated with stand-alone wiring engineering? errors.
The use of flexes is increasing dramatically.Says WU PING, general manager of DAHE TECH, "When you pick up almost any electrical appliance today, you will find a flex set in it. When you open a 35mm camera, there are 9 to 14 different flex circuits inside because? Cameras are getting smaller and more functional. The only way to reduce size is to have smaller components, finer lines, tighter pitches, and objects that are bendable. Pacemakers, medical devices, video cameras, hearing aids, portable computers -- there are flex circuits in almost everything we use today."
How to choose the wires (windable circuits):
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