Common faults of mobile phones and their solutions

What if there is something wrong with the mobile phone? Let me share with you the common faults and solutions of mobile phones. Welcome to refer to them!

Common faults of mobile phones and their solutions

1, I can't see the phone records, information, gallery, post-it notes, etc. So I can't edit the desktop.

Cause analysis: "Guest mode" is turned on.

Solution: Turn off guest mode in system settings. You can tell customers the purpose of "guest mode" and the "failure" that will occur when you turn on "guest mode".

2. I can't see the address book (contact)

Cause analysis: mobile phone, SIM card, etc. There is no check in the Display Category of Contacts.

Solution: enter the contacts and click menu-> Display Classification to set the display classification, such as "All Contacts".

3. Do not turn on the machine without charging (especially the all-in-one machine)

Cause analysis: Not charging and not turning on the phone is largely due to insufficient battery power (the lower the battery power due to excessive discharge of the mobile phone). It's just an illusion to activate the battery without charging or turning it on.

Solution: Use the original charger to charge the mobile phone. It usually takes several minutes to ten minutes to activate the battery (sometimes it may take longer). Display charging information and restart the machine. Using a charger with large charging current (ensure that the charger is made by a regular manufacturer and the charging current does not exceed 1.5A) can speed up the activation process. The all-in-one machine can also use the power-on button+volume-down button for 7.5 seconds to reactivate the battery.

You can tell customers how to use the battery correctly: 1, and don't wait until the battery is completely dead before recharging, that is, to avoid excessive discharge; 2. The lithium battery can be charged on demand, and it is not necessary to wait until the battery is dead. At the same time, be careful not to charge for too long (overcharge).

4. The photo is white

Cause analysis: 1, mobile phone ROOT (smartphones listed before 2013 are not allowed to ROOT, and there will be some problems after root, and whitening is one of them). 2. Institutional reasons; 3. Hardware failure.

Solution: 1 First, enter the command "*#7552#" to see if it is the root command. If the result is "normal" instead of "root", try to restore the factory settings and see if it can be solved. 2. If the factory settings cannot be restored, the input command "*#7552#" is displayed as "Read" or "Your system has been modified by ROOT, and the original ROM has been brushed" (the mobile phone is root), and it must be sent to the after-sales service. Can tell customers the harm of roots ...

5. The photos can't be stored, indicating that the storage space is insufficient or nonexistent.

Cause analysis: 1, mobile phone memory (internal storage space or SD card) is not enough; 2.SD is not plugged in; 3.SD card is damaged.

Solution: 1, clean up the junk files in the mobile phone memory (you can use third-party management tools such as Tencent Mobile Manager and 360 Mobile Assistant to clean up); 2. Take out the SD card to check the metal sheet. If there is dirt or rust, you can wipe it with an eraser and then try plugging in your mobile phone. 3. Try to format the SD card after confirming that the customer's SD card has no important information and obtaining the customer's consent.

6, the touch screen is not sensitive

Cause analysis: 1, the touch screen is not sensitive when charging, and the unstable output voltage of the original charger will cause the touch screen to be insensitive; 2, the screen protective film causes the touch screen to be insensitive; 3. Static electricity makes the touch screen insensitive; 4. System software reasons; 5. The mobile phone is ROOT

Solution: 1 When it is confirmed that the customer is using a non-original charger, inform the customer of the reason and advise the customer to use the original charger, and advise the customer not to use the mobile phone as much as possible when charging; 2, with the consent of the customer, try to tear off the protection; 3. Press the key twice to release static electricity; 4. After data backup, restore the factory settings. If the problem still cannot be solved, please check whether there is a new OTA version. If yes, please try to upgrade to the latest version. 5, send after-sales treatment.

7. When answering the phone, the phone is black.

Cause analysis: the protective film covers the optical distance sensor.

Solution: Suggest the customer to remove the protective film and tell the customer the advantages and disadvantages of sticking the protective film.

8. When you open the program, you will be prompted that "the application is unresponsive or unexpectedly stopped, prompting forced shutdown or retry".

Cause analysis: Generally, there are too many programs running in the background of the mobile phone, and the available memory of the mobile phone is reduced, which leads to a high probability that the current task cannot be processed. At this point, the system will automatically enable the protection mechanism and prompt to wait for retry or close the program.

Solution: 1 Call up the recently run program through the "Home" key, and end the program running in the background by sliding; 2. You can quickly clear the memory through third-party management software such as mobile phone housekeeper.

9. Fast power consumption and short standby time

Cause analysis: 1, there are many programs running in the background; 2, the screen brightness is high; 3. Turn on Bluetooth, GPS, WIFI and data connection; 4, E6 and other models turn on the somatosensory function, which also consumes a lot of power; 5. The frequent use of smart phones is also an important reason for the short standby time.

Solution: 1 Press the HOME key in the main interface to call up the recently run program and slide out the program running in the background; 2. Turn down the screen brightness appropriately; 3. Turn off Bluetooth, GPS, WIFI or data connection when not in use. 4. Try to make customers accept the common phenomenon that smart phone batteries are charged once a day. One is because of the characteristics of smart phones, and the other is because the frequency of smart phones is much higher than that of feature phones.

10, is the fuselage hot or hot?

Cause analysis: Smartphones are equivalent to microcomputers. When the CPU works, it will generate heat (but the mobile phone doesn't have a special heat sink like a computer), and the heat will be emitted through the shell, so we will feel the fuselage heating, which is normal. When playing a large 3D game or using a mobile phone while charging, the fever phenomenon is more obvious.

Solution: Explain the cause of fever to customers, and advise customers to avoid using mobile phones when charging.

1 1. After answering the phone, there is no call record or the order is wrong. There is a short message, but I can't find it.

Cause analysis: Telephone call records and short messages are sorted by time. If the "date and time" setting of the mobile phone is incorrect or the "date and time" setting of a certain period of time is incorrect, some call records and short messages will appear in the wrong order or there will be no call records.

Solution: Tell the customer the reason, and suggest setting the "date and time" of the mobile phone to "automatically determine the date and time".

12, some incoming calls can't be dialed in, which means that you can't connect or turn off, you can't receive short messages, or you just display missed calls without ringing.

Cause analysis: 1 was intercepted by third-party management software (such as Tencent Mobile Manager and 360 Mobile Manager). ), resulting in unable to make phone calls and unable to receive short messages normally; 2. The signal is unstable or poor; 3. Non-smart phones such as "Don't bother me" are set to reject calls from strange numbers; 4. System problems.

Solution: 1, check whether the smartphone downloads third-party software such as QQ housekeeper and 360 mobile phone housekeeper to turn on the interception function; 2. Cancel the rejection of calls from strange numbers in the "Don't bother me" of non-intelligent machines; 3. Restart the phone or restore the factory settings.

13, the mobile phone is slow to respond, indicating that the memory is insufficient (especially the mobile phone without an expansion memory card).

Cause analysis: 1, the mobile phone stores too much data or installs too many applications, resulting in insufficient memory; 2. Mobile QQ, WeChat, Weibo and other applications generate too much cached data, which takes up the memory of the mobile phone. 3. Cell phone poisoning.

Solution: 1, with the consent of the customer, help the customer delete some data or uninstall some applications; 2. Use third-party management software (such as Tencent Mobile Management and 360 Mobile Manager) to clean up the junk files generated by the application. You can also "system settings"->; "Applications", open the installed applications one by one and manually "clear the number". 3. Install anti-virus software on the mobile phone.

14. When the mobile phone is taken out of the pocket, it only vibrates and doesn't ring, sometimes it does, sometimes it doesn't.

Cause analysis: 1. Some mobile phones have a "flip mute" function. If this function is enabled, when there is an incoming call, the phone will be muted when flipping the cover. When the mobile phone came out of his pocket, he accidentally turned it over. 2. Holding a mobile phone and accidentally pressing the side key will also lead to silence.

Solution: Tell the customer the reason and ask the customer whether to cancel the "flip mute" function.

15, the mobile phone has been used for a while, and the response is slow.

Cause analysis: 1, virus in mobile phone; 2. There are too many applications running in the background, or there are too many junk files cached in the system running memory; 3. Too much information is stored or too many applications are installed, resulting in too little storage content left in the system; Or the application generates too much "program data".

Processing method: 1, install mobile phone antivirus software for antivirus; 2. Method 1: Press the HOME key to call up the recently run program, and slide to exit the program. Method 2: Restart the phone. 3. Delete some data or uninstall some applications; Clean up the junk files (data) generated by the application through third-party management software.

16, the phone crashed.

Cause analysis: 1, there are too many programs running in the background, which takes up too much running memory, resulting in suspended animation or even crash of the system; 2. Virus in mobile phone; 3. The mobile phone stores too much data or installs too many programs.

Handling method: 1. Quit some programs running in the background and tell customers how to quickly call up and quit the recently run programs through the HOME button; 2. Install antivirus software for antivirus; 3. Delete and uninstall some data and programs.

17, automatic shutdown

Cause analysis: 1, battery contact or battery connector oxidation; 2, caused by static electricity;

Processing method: 1. Use an eraser or alcohol to clean battery contacts and battery connectors; 2, keep the phone clean, or bring a phone holster.

18, the mobile phone is in the trouser pocket, and the screen lights up.

Cause analysis: The key of some mobile phones is designed at the top, protruding. Due to its own weight, touching the bottom of the trouser pocket may light up the screen when the mobile phone is placed in the trouser pocket. Then the screen touches the skin, causing the screen to jump.

Handling method: 1. Pay attention to put the mobile phone in the trouser pocket or the screen is facing outwards; 2. Use a cell phone holster.

19, the call is disconnected or intermittent (especially 3G and 4G mobile phones).

Cause analysis: A large number of machines that are disconnected or have intermittent calls are due to poor 3G or 4G signals at the call site. Mobile phones will switch between 3G, 4G and 2G networks, and may be disconnected or intermittent during the switching process.

Solution: Set the network preference manually, and set it to 2G where 3G and 4G signals are not good.

20, WeChat, QQ pictures, avatars and friends circle content can not be seen.

Cause analysis: As long as 1, WeChat, QQ, Weibo and other functions can use the memory card (memory or T card), such as friends circle, QQ picture, avatar and so on. If the memory or T card is full, or the T card is damaged, even if the T card is not a high-speed card, these functions will not be used. 2. When the mobile phone is connected to the computer and files are transmitted, the memory card is occupied by the computer, and functions such as WeChat, QQ and Weibo circle of friends cannot be used.

Solution: 1 Help customers clear their memories and tell them; 2. Confirm the problem of the memory card and advise the customer to replace the memory card.

2 1, unable to register for extended warranty.

Cause analysis: 1, the server system was upgraded later, which made it temporarily impossible to register for extended warranty; 2. Failing to handle the extended warranty registration as required; 3. The machine registered with the extended warranty does not meet the requirements: a. The extended warranty is not registered within one month after purchase; B. The purchased smartphone is not a model that can participate in the extended warranty (a model without Gionee service or membership center); .

Processing method: 1. Please wait until the system upgrade is completed before registering; 2. Step 1: Register Gionee members through "Member Center" or "Gionee Service"; Step 2: Pay attention to the official account of "Jinli Care" WeChat; Step 3: open "jinli care" wechat, click "my service"-> "my privilege", first enter the 15-digit IMEI number, and then enter the 8-digit purchase date. 3. If the registration time exceeds the purchase time for one month due to special reasons, the serial number can be submitted to the provincial customer service center, which will handle it.

22. There are always unread messages, but there are no unread messages when viewing messages.

Cause analysis: SMS expired or MMS damaged.

Solution: Connect the computer to read or delete the pea folder.

23. The mobile phone cannot recognize the SIM card.

Cause analysis: 1, SIM card is not placed correctly. 2.SIM card is too old. 3. The SIM card holder of the mobile phone is damaged. 4. The IMEI number of the mobile phone body is lost.

Solution: 1 Try reinstalling the SIM card. 2. Wipe the metal scraps with rubber. If the problem cannot be solved, other SIM cards can be read, and customers are advised to replace them with new ones. 3. If the SIM card holder of the mobile phone is damaged, it is recommended to go to the customer service center for repair (the card holder is damaged and needs repair). 4. Input command "*#06#" does not display the IMEI code of the fuselage, so it is recommended to send it to customer service for maintenance.

24. Unable to send SMS.

Cause analysis: 1, unable to send SMS; 2, mobile phone arrears.

Processing method: 1. Open the message, click the virtual menu key, and then click Settings-SMS Service Center to set the number of SMS Center to the number of the local mobile operator. (SMS centers vary by operator and region. Please call the local operator for consultation. 2. Confirm whether the customer's mobile phone card is in arrears.

25. Photos or other information cannot be saved.

Cause analysis: 1, the memory card has a virus; 2. The memory card is damaged; 3. Insufficient memory space.

Solution: 1, install antivirus software, or format the memory card; 2. Replace the memory card; 3. Clean up the data stored in the memory card and the data in the application (junk files).

26. The camera is blurred.

Cause analysis: 1, setting the camera pixel too low; There is dust on the camera lens.

Processing method: 1, in the camera settings, set the pixel to the highest. 2. Wipe the lens of the camera with a piece of glasses cloth.

27, running software or game crash.

Cause analysis: 1, the mobile phone runs out of memory; 2. The mobile phone is ROOT3. 3. The software was deleted by mistake.

Processing method: 1, exit some programs running in the background; 2. Send it to the customer service center to upgrade the system software and restore it to its original state; 3. Reinstall and install the latest version of the program or game; 4. Try to restore the original factory settings.

28. The game (software) cannot be installed.

Cause analysis: 1, there is not enough space left in the mobile phone memory or T card to install the software. 2. "Unknown source" is unchecked. Many softwares that have passed the third-party Android platform have not been authenticated by Android, and you need to check the "unknown source" before installing.

This game is not compatible with this machine. Some games require mobile phone configuration and system version. If the configuration and system version of the game are incompatible, the game may not be installed.

Processing method: 1. Clear some memory or t card contents. 2. in "system settings"->; Check "Unknown Sources" in "Security". 3. Change the game (software) version and try to reinstall it. If the customer insists on playing a game, he can take the opportunity to recommend a new mobile phone to the customer.

29, the game (software) flash back

Cause analysis: 1, program version problem. If you download a lower version of the game, it may not be compatible with the server. 2. The installation position is wrong. 3. Too much data is cached. 4. There are too many programs running. There are too many background programs in the mobile phone, resulting in insufficient memory, which leads to the game flashback. 5, the network speed problem. Some games need more network, and when using 2G/3G network, the game may flash back. 6, mobile phone antivirus software. Some mobile games contain malicious code, which will be intercepted by anti-virus software, so they cannot enter normally. 7. Lack of Google service package. Some large games need to install Google service framework to run. 8. Mobile phone hardware is not supported. Some games have high requirements for the configuration of mobile phone hardware. If the hardware of the mobile phone fails to meet the configuration requirements of the game, the game will flash back or even fail to start at all. 9. The system version is too low. Some games have certain requirements for the Android version. If the system version is too low to support the newly developed or new version of the game, it will also cause flashback. 10, incompatible resolution.

Some games have certain requirements for the resolution of mobile phones. If the resolution of the mobile phone is incompatible, the game is prone to flashback or other errors. 1 1. Apply permission settings. Some applications prohibit reading network location information and mobile phone data reading information. And program flashback will also occur. 12. The mobile phone time and the server time are inconsistent. Some games require the mobile phone time to be consistent with the server time (such as running coolly every day), otherwise it may flash back.

Treatment method:

1. Download the new version to replace the old version of the game.

2. The installation location can be changed during the game or determined by the system.

3. Go to System Settings-> Applications-> All, find the problematic application, clear the data or empty the cache, and then enter the application. PS: Clearing the data will erase the personal settings and account information of the application.

4. Exit other background applications.

5. It is recommended to play games in WIFI environment.

6. It is suggested to download games with high safety factor through the green download platform or using the software store.

7. Install Google Framework.

8, 9 and 10, change your mobile phone and don't play such games.

1 1. Check whether the permission setting prohibits some permissions of the game in the security management software and modify it.

12. In the system settings, the date and time are set to "automatically determine the date and time" (that is, synchronize with the system).

30. Ringtones and one or more of messages, calls, media and alarm clocks are low.

Cause analysis: One or several volume settings of ringtone, notification (i.e. information), call volume, media volume and alarm clock volume of Android phone are too small.

Treatment method: check "System Settings"->; Whether the volume setting of some options in the volume is too small, if so, reset it.