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1. Judge the degree of damage to the mobile phone
2. Judge the fault status of the mobile phone under the black screen
3. If the screen is cracked, determine whether the outer screen or the inner screen of the mobile phone is damaged
4. Enter the code through the dialing interface to test where there is a problem with the phone
5. If the screen of the mobile phone is damaged, take out the data in the mobile phone

(1) Back up the mobile phone data to the U disk through the docking station display

(2) Turn on the USB debugging mode through the OTG data cable operation

(3) Trigger the MTP mode of the faulty mobile phone to transfer files through SMS

(4) Borrow the screen to complete the data export backup

(5) Get back the data through cloud backup

(6) Add display to the mobile phone with display failure through screen projection

(7) Read the faulty mobile phone information through the card reader

(8) Transfer the data through the tool software: Kies, Kies3

(9) Transfer the data through the tool software: Total Control

(10) Through ABD tools

(11) Through the Anlink tool

(12) USB debugging to open the abnormal solution

(13) Contacts are exported after the Android phone screen fails

(14) When the screen of the Android phone is damaged, turn on ADB debugging and authorize the computer

(15) Through the voice wake-up function, let the voice assistant turn on the MTP mode of the mobile phone

(16) Transfer the memory of the motherboard through the brick machine, and then turn on the USB debugging to transfer the data

(17) Transfer the data through the mobile phone chip programmer

(18), the ultimate magic weapon nirvana

Important data and data are stored in the smartphone, and a series of operations on the phone rely on the touch layer of the screen to complete, once the screen is damaged (the screen is broken or the touch screen fails), then the data in the phone cannot be viewed. How can we connect to the computer and retrieve the data from the phone when the screen of the mobile phone is damaged?

Different mobile phone models, different mobile phone failures make the matter of taking out mobile phone information diverse, if you are interested in dealing with it yourself, you can take a look at this article. If there is no suitable one, it is also a kind of inspiration. The content of the information is for reference only, if you need to solve specific problems, it is recommended that you consult a professional in the relevant field in detail. 

1. Judge the degree of damage to the mobile phone

The boot screen, whether there is a display, whether there is an indicator light, whether there is a receiver sound, whether there is a ringtone, whether the touch screen is sensitive, whether the screen has a failure point, etc., are all the basis for judging the failure and damage of the mobile phone.

1. Judge the fault status of the mobile phone under the black screen

The  black screen of the mobile phone may be caused by power exhaustion, system crash, screen damage, high temperature of the mobile phone, self-protection shutdown of the mobile phone, battery feeding or system abnormality, software bugs, etc., you need to check one by one and seek solutions, such as pressing and holding the power button to see if it is turned on, if it cannot be turned on, then connect the charger and charging cable with good function for charging, and see if the phone screen shows the charging icon. If the phone starts normally after pressing and holding the power key, it means that there is a problem with the system or software, and if it does not show that it can neither charge nor start, it means that the screen is damaged.

If the appearance of the faulty mobile phone is normal except for the screen, and the screen is completely black and there is no display, to judge whether the mobile phone can be charged normally, we can plug the mobile phone into the power supply, if the mobile phone has a normal charging prompt sound and vibration, it means that the mobile phone can be charged.

There are several scenarios where the screen goes black:

The first is that the screen has no backlight, and the content displayed in the display can be faintly seen through external light, which can be solved by replacing the screen backlight or repairing the backlight circuit of the motherboard;

In the second case, there will be a difference between light and no light on the screen, and nothing will be displayed in the case of light (repeatedly pressing the power button of the phone in the power-on state), this fault needs to be troubled in addition to the display screen, and the fault of the motherboard display circuit.

The third case: the phone screen cable is broken. The cable refers to the connection cable between the mobile phone motherboard and the mobile phone display, and the display screen is controlled and output by the motherboard, and the cable is responsible for the data transmission between the mobile phone motherboard and the display screen. Depending on the degree of breakage, some mobile phones will have a black screen without display, but still have touch screen function; Some mobile phones will have unclear screen imaging, flickering patterns, and the screen is not bright.

2. If the screen is cracked, determine whether the outer screen or the inner screen of the mobile phone is damaged

The screen is cracked, but it can be displayed and can be operated by touch. At this time, we have to test whether the external screen of the mobile phone is damaged or the internal screen of the mobile phone is damaged.

Bad outer screen: The outer screen is broken, but the touch and display are normal. The outer screen is usually just a piece of tempered glass, with no other special functions, just to protect the inner screen of the mobile phone, so the mobile phone can continue to be used if the mobile phone screen is broken.

Bad inner screen: insensitive to touch, skipping screen; The display is incomplete, and the screen has traces of blackening and yellowing, which is caused by the leakage of the LCD screen;

The display screen is similar to the screen phenomenon caused by the virtual soldering of the mobile phone processor or the incompatibility of software and hardware, the difference is that the latter can temporarily restore the display by force restart, while the former has always been in the state of the screen blur.

Black, pink, or blue spots appear on the screen, usually due to a short circuit in the display pixels, causing the LCD to leak and gradually expand over time until the screen goes black. Some screens do not spread after leakage, and will retain their current shape and size.

The appearance of green, red, blue, and white horizontal and vertical lines in the display screen is a display failure, which is usually caused by damage to the display cable, and needs professional maintenance equipment to replace the display cable.

In addition to judging the appearance, the inner screen is bad, and the screen is also bad.

The easiest way to self-test: drag any app icon on the phone with your finger, don't let go, keep pointing, sweep the app icon to all places on the phone screen, if there is no place that cannot be dragged to, then the inner screen of the phone is not damaged, but the outer screen is damaged.

3. Enter the code through the dialing interface to test where there is a problem with the phone

If the phone can be displayed and entered, you can enter the code through the dial interface to test where there is a problem with the phone

Enter *#*#64663#*#* in the Mi dial interface

 Here we are able to do SIM card test, SD card test, button test, vibration test, LED light test, touch screen test, touch screen test, speaker test, earpiece test, headphone test, microphone test, GPS test, WLAN test, OTG test, Bluetooth test, distance sensor test, light sensor test, charger test, camera test, fingerprint test, power test, draw grid test and so on.

Enter *#28469# on the Huawei dial-up page

Enter *#808 in the OPPO dialing interface #

Enter *#0*# on Samsung's dialing interface

vivo：*#558 #

2. If the screen of the mobile phone is damaged, take out the data in the mobile phone

(1) Back up the mobile phone data to the U disk through the docking station display

(Applicable situation: the mobile phone screen is not displayed, the touch screen is invalid, and other functions are basically intact)

Materials Required:

 Docking station 1 (multi-port, with power supply port), monitor 1 (as long as the interface is matched, it can also be replaced by a TV), USB mouse 1, USB keyboard 1, U disk 1, charger 1 (power supply).

(1) Please charge the faulty mobile phone to prevent data loss caused by the mobile phone running out of power during operation.

(2) Plug a USB mouse, USB keyboard, monitor (or TV) into the dock's interface

(3) Plug in the charger and power the docking station.

(4) Plug the USB flash drive into the port of the docking station

(5) Connect the mobile phone with the docking station, at this time, we can try to operate the mobile phone through the keyboard.

(6) Press the NumLock key on the keyboard, space, and enter the phone password.

(7) After the password is entered, press the Tab key twice, press Enter, and the screen of the mobile phone has been cast on the monitor, and then we can operate the mobile phone through the mouse.

(8) Set up ----> system and update ----> backup and recovery----> external storage----> USB storage----> create new storage ----> back up data as needed

(9) The setting method of the specific operation mobile phone varies according to the different brands of the mobile phone

(2) Open through OTG data line operationUSB debuggingmode

(Applicable situation: the mobile phone screen can be displayed, the touch screen is invalid, and other functions are basically normal)

Materials Required:

　　OTG cable, USB mouse, computer

(1) Fully charge the mobile phone to prevent data loss caused by the mobile phone running out of power during the operation.

(2) Prepare an OTG data line. Micro-USB has no pros and cons of plugging and unplugging, flat trapezoidal; Lightning is exclusive to Apple; Type-C is flat and can be either a positive or negative plug. Therefore, do not buy the wrong model that does not fit your phone, be sure that the socket of your phone's data cable is the right one, don't be mistaken.

(3) Connect the OTG cable to the charging port of the mobile phone.

(4) Plug the USB end of the mouse into the OTG interface (wired and wireless mice), you can see that after the mobile phone is connected to the mouse through the OTG cable, there is a mouse arrow on the mobile phone screen. Clicking the left mouse button is a simple click function that can also be dragged by pressing the left mouse button. The right mouse button is the return function. Press the left mouse button and swipe to complete the unlock pattern to unlock the phone, do not release the mouse button until you have finished swiping the pattern.

(5) Next, you can use the mouse to operate, use the mouse to command the small arrow to click on the phone: Settings - Developer Options - Click the USB debugging button to turn on the USB debugging mode (the specific method varies from phone to phone).

(6) Find a computer and download the corresponding assistant app on your mobile phone

(7) Connect the mobile phone to the computer and back up the mobile phone data in the normal way.

(3) Trigger the MTP mode of the faulty mobile phone to transfer files through SMS

(Applicable situation: mobile phone SMS reception is normal, basic functions are normal, touch screen is invalid)

Materials Required:

Functional data cable (with normal data transmission function), computer, a normal mobile phone (with SMS function),

The faulty mobile phone needs to have the function of receiving SMS.

(1) Fully charge the mobile phone to prevent data loss caused by the mobile phone running out of power during the operation.

(2) Connect the mobile phone and computer with a functional data cable (with normal data transmission function).

(3) If the faulty phone does not have a lock screen password: Use another phone to send [*##*] (SMS content) to the faulty phone

(4) When the faulty phone has a lock screen password: use another phone to send [*#手机密码#*] (SMS content) to the faulty phone, for example: if the password is 1234, the SMS content is [*#1234#*]. When the password is complicated, pay attention to the case of letters.

(5) After receiving the text message, the faulty mobile phone will have a ringtone reminder, that is, switch to [Media Device (MTP) mode], and then the file can be transferred through the computer

(6) On the computer side, use the file management function to transfer mobile phone data for backup.

(7) The person in the address book of the faulty mobile phone sends a text message with a password, and the success rate of switching to [Media Device (MTP) mode] after accepting it is high.

(4) Borrow the screen to complete the data export backup

(Applicable situation: the mobile phone screen is broken, the screen has been black, other basic functions of the mobile phone are normal, and I know how to change the screen of the mobile phone)

(1) Take your phone to a mobile phone repair shop.

(2) Say in advance that you are borrowing the screen of the mobile phone repair shop, and give the other party the cost of borrowing the mobile phone screen (usually dozens of yuan), and then connect the mobile phone with the display screen corresponding to the model (do not fix the adhesion).

(3) Touch the screen to open the USB debugging mode of the mobile phone.

(4) Connect to the computer and use a certain assistant software to export the data to the computer for backup processing.

(5) If you are a person with strong hands-on ability and a good understanding of mobile phone hardware, you can also buy the corresponding mobile phone screen online to replace it at home.

(5) Get back the data through cloud backup

(Applicable case: The phone has always used the automatic cloud backup function)

(1) First, use the new phone and open the new phone settings.

(2) On the settings screen, click the account used by the faulty phone before logging in.

(3) After logging in, click on the cloud space option.

(4) Then select Open Cloud Backup.

(5) Tap the backup record of the corresponding phone.

(6) Click on the recovery option at the bottom of the interface.

(7) Click OK to recover in the pop-up interface, so that you can export the data of the phone with the broken screen to the new phone.

(8) Due to the different attributes of the automatic cloud backup settings, the cloud data may not be all the data of the faulty phone.

(6) Add display to the mobile phone with display failure through screen projection

(Applicable situation: the mobile phone screen is not displayed, but there is a sense of touch)

• Wired projection
• Use a Type-C adapter cable to cast the screen

(1) Prepare the Type-C cable.

　　One end of the Type-C adapter cable is Type-C, and the other end can be HDMI, DP or MiniDP, VGA, etc., please select the appropriate adapter cable according to the large-screen device port.

(2) Connect the Type-C port to the mobile phone and the large screen device to the other end.

(3) Switch the input signal source to the  HDMI, DP, MiniDP, or VGA inlet corresponding to the adapter cable on the large screen.

(4) Open the cloud space of the mobile phone by comparing the large screen display, and back up the mobile phone data to the cloud first.

• Use the docking station device to project the screen

Using the docking station device to cast the screen, you can connect the mobile phone to the large screen and connect and use the wired keyboard and mouse at the same time.

(1) Prepare the docking station equipment. The docking station supports Type-C to multiple ports, for example, the large screen device is HDMI port access, and the docking station device can use Type-C to HDMI + USB + USB.

(2) Plug the mobile phone and large-screen device into the docking station through the adapter cable, and insert the USB keyboard and mouse into the USB port of the docking station.

(3) Switch the input signal source to the  HDMI, DP, MiniDP, or VGA entrance corresponding to the adapter cable on the large screen.

(4) Open the cloud space of the mobile phone by comparing the large screen display, and back up the mobile phone data to the cloud first.

(5) Or plug in the USB flash drive on the docking station and back up the mobile phone data to the USB flash drive.

(7) Read the faulty mobile phone information through the card reader

(Applicable case: the main data of the faulty mobile phone is stored on the SD card and SIM card)

A card reader is a card reading device

(1) The first thing is to determine the type of memory card we have, the mobile phone card reader used for different types of mobile phone memory cards is different, and prepare the corresponding card reader for the mobile phone SD card

(2) Plug the card reader into the USB port of the computer, and then the computer will display,

(3) Then install the mobile phone memory card into the corresponding mobile phone card reader. During the installation process, you must pay attention to the front and back of the memory card, and do not install it backwards.

(4) You will see a prompt on the computer screen to find new hardware, follow the prompts to open the mobile hard disk and back up the mobile phone data.

(5) In the same way, use a SIM card reader to back up personal data such as SIM card information, SIM card contact card, etc. on the PC side.

(8) Transfer the data through the tool software: Kies, Kies3

Materials Required:

 A fully functional data cable (with normal data transfer function), computer, Samsung Kies or Kies3 software

Download KIES or Kies3:

http://samsung-kies.softonic.cn/

(1) Download and install the Kies synchronization software (check the table above to select the model supported by the faulty phone to download), do not need to open it. When installing the KIES software, the phone cannot be connected to the computer.

(2) Connect the mobile phone with the computer with a data cable, and the mobile phone does not need to do any operation.

(3) After the connection is successful, the mobile device drive letter will pop up on the computer desktop, and you can move the files from the faulty phone to the computer.

(4) If it doesn't pop up, you can go to my computer, find the mobile device drive letter with the phone model, open it, and back up the data.

(5) If you still can't connect to the computer after the above operations, check whether the Windows Media Player is installed in the computer and check whether it is the latest version, KIES should also be checked, if the version is lower, you need to download the latest version of the software.

(6) Disconnect the phone from the computer, open the Kies software, click [Solve Connection Failure], and reinstall the driver

(7) Replace the USB port of the computer, and the USB port on the host computer is recommended for desktops.

(8) Other problems are due to the compatibility of the computer or the window firewall.

9) Transfer the data through the tool: Total Control

https://www.sigma-rt.com/tc/

The Lite version supports 2 devices and is free for non-commercial use

　　Total Control supports all operating systems above Windows XP (Windows XP ~ Windows 11) (32-bit/64-bit), and is compatible with Android 4.x ~ 12 devices (phones, tablets, set-top boxes, etc.) from various brands and manufacturers.

 Prepare 1 computer, 1 Android device, and 1 USB cable to get started (if you need to connect 2 Android devices, please prepare 2 USB cables).

 Download Total Control, install it on your computer, and launch the software.

The latest version: Version 8.0 (Update 41).

(10) Through ABD tools

(11) Through the Anlink tool

 Mobile screen projection computer, control your phone with a computer, support all brands of  Android phones, WiFi and USB connections, multi-touch, shared clipboard, audio, keymapping, file manager, immersive screen experience, etc.

Download link

https://anl.ink/

https://cn.anlinksoft.com/

(12) USB debugging to open the abnormal solution

In general, you can revoke the USB debugging authorization and turn off the USB debugging and then reopen the USB debugging, which generally solves the problem. If you can't, refer to the solution excerpted below:

• Plug in the data cable, enter *#*#2846579#*#* in the dial-up interface to enter the engineering mode
• projectmenu→ background settings→ USB port configuration→ select google mode, click OK
• Do not unplug the cable, exit the project mode, restart the phone directly, and the removable disk will be displayed in the computer (if it still does not appear, repeat steps 1 and 2)
• Turn on the debugging port on your Xiaomi phone: Keep your phone connected to the computer, then enter *#*#717717#*#* on the dial-up interface, and you will see a pop-up prompt of "Diag USB port enable" after the input is completed, indicating that the port has been successfully opened.
• On vivo phones, enter *#*#7777#*#* in the dial interface, and turn on "Developer Options" and USB debugging;

(13) Contacts are exported after the Android phone screen fails

The touch screen fails when the phone is flooded, but other physical buttons (power and volume) are available, and other functions are normal.

• After powering off, press and hold Power and Volume Up to vibrate, release the power, keep holding the volume up, and enter Recovery mode.
• In recovery mode, you can back up your phone through the menu option, and the backup files are located in the time-named folder of ClockWorkMod/Backup stored on your phone.
• In recovery mode, enable USB connection in the menu mount option to connect the phone to the computer via USB, at which point the computer should recognize the phone and view its Chinese parts.
• Copy the data portion of the backup file, including data.ext4.tar (data.ext4.tar.a/b), to your computer, after which you can remove your phone.
• Open the command line in the file location of your computer and use the command to merge multiple tar files: type data.ext4.tar.a data.ext4.tar.b >> data.ext4.tar to generate the merged extractable file.
• Extract the zip file and find the data/com.android.providers.contacts/databases directory, where the contact2.db file is the sqlite data file that holds the contact information. Thereafter, the original compressed file can be discarded.
• Use a sqlite tool such as DB Browser for Sqlite to open the data file and browse for the raw_contact and data tables in it.
• Construct the SQL statement select raw_contact_id,data1,data2,data3,data4 from data to query and copy the query results to an Excel document. The database file can then be discarded.
• Edit and organize the Excel file and export it to CSV format.
• Using the CSV to vCard tool, export the csv as a vcf file, taking care to select the utf-8 encoding.
• Use a text editor that can be encoded (e.g. Notepad++) to convert the exported vcf file to UTF-8 without BOM encoding format and save it.
• Transfer the VCF file to a new phone, open it with the built-in contacts tool, and the import is complete.

(14) When the screen of the Android phone is damaged, turn on ADB debugging and authorize the computer

(15) Through the voice wake-up function, let the voice assistant turn on the MTP mode of the mobile phone

(Applicable situation: the mobile phone screen is not displayed, the mobile phone has normal functions except for the screen, it can be turned on, the mobile phone has turned on the voice assistant, supports voice wake-up, the wake word is set, and the mobile phone does not have the file transfer function)

The main wake-up modes of voice assistant are: press the power button to wake up, background button to wake up, wire control headset wake-up, Bluetooth headset wake-up and other ways to wake up. It depends on your phone's brand and settings

(1) Charge the faulty mobile phone to ensure that there is power in use.

(2) Use the voice wake-up method (press the power button to wake up, etc.) and directly point at the mobile phone and say the wake-up word to wake up;

(3) Use your usual tone and attitude to communicate with the voice assistant (whether it is "vicious" or "gentle and coquettish" as you like), and let the voice assistant "turn on the MTP" function.

(4) If there is a voice assistant in the mobile phone that feedback "connection successfully", it means that it has been successfully switched to MTP mode.

(5) Connect the mobile phone to the computer, and the mobile phone has MTP mode turned on, and the mobile phone data can be backed up on the computer.

(6) If the mobile assistant ignores you, please enable your own soft grinding and hard bubble mode, and try to communicate with the assistant several times.

(16) Transfer the memory of the motherboard through the brick machine, and then turn on the USB debugging to transfer the data

(Applicable situation: the mobile phone screen is completely damaged, the motherboard memory card is intact, and other functions of the mobile phone are scrapped, but the data in the mobile phone is very important)

(1) Go to Xianyu or a repair shop or other places to buy a brick machine with a good screen, and replace the motherboard of your mobile phone with a broken screen and the flash memory in the mobile phone (usually eMMC chip or UFS) to the brick machine with a good screen. (For non-professionals, please go to the repair shop to deal with it).

(2) Then you turn on the USB debugging function of the brick phone, and back up the original faulty phone data in the way of normal phone backup data.

(17) Transfer the data through the mobile phone chip programmer

(Applicable situation: the mobile phone screen is completely damaged, the motherboard memory card is intact, and other functions of the mobile phone are scrapped, but the data in the mobile phone is very important)

(1) Remove the relevant chips of the mobile phone, clean them up, put them into the chip programmer, read the content of the chip through professional software, and back up the faulty mobile phone data.

(2) Non-professionals should go to a professional repair shop to deal with it, or ask professionals to operate.

(18), the ultimate magic weapon nirvana

(Applicable situation: the mobile phone screen is seriously damaged, the original mobile phone USB debugging mode is not turned on, the nearby repair shop can not deal with it, you really can't get it yourself...) ）

Follow these steps to solve the problem:

• Take out your phone's SIM card.
• Remove your phone's memory card (if you have one).
• Prepare a delicate gift box, put it in the mobile phone, seal it, and write the moonlight treasure box (the opening method is unknown). . . .
• Or stand next to the window, hold your phone out of the window (put the trash can outside the window), close your eyes, and let go gently.
• Now God rewards you and gives you a chance to use a new phone, the things that were unhappy before are gone with the old phone, good luck and happiness will come with the new phone, what are you waiting for, quickly pick a phone you like.