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1. Press and hold the power button to force the phone to restart or shut down, and turn it on later;
2. If the battery can be removed, try to take out the battery, and then install it after a while, and turn it on;
3. If the above methods do not work, you can contact the customer service of the mobile phone seller to consult the relevant situation;
4. You can also go to the after-sales maintenance point of the mobile phone to test the mobile phone and check the specific reason;
5. If the mobile phone is faulty, it needs to be repaired at a special repair point for the mobile phone;
6. If in the end, even after the repair is not satisfactory, then you can only replace the mobile phone.
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If you are using a vivo mobile phone, it is recommended to bring your mobile phone to the customer service center for testing and processing. You can follow this link.
Find your nearest Customer Service Center address and**.
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1.There is a chance that the phone is in a dead state and cannot function.
2.It is possible that the touch screen of the mobile phone is out of order, resulting in the inability to use the touch function, 3You may use an Android adapter, plug in the charging port of the mobile phone, connect the mouse, and use the mouse to try to see if you can control the mobile phone desktop.
This practice can check out that the phone is unresponsive to touch.
It is due to the damage of the touch screen that causes how to tap the phone, and there is no response.
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The touch screen is out of order! Look at the situation of the machine, the outer screen is cracked! Go to the after-sales service for repair!
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1. The boot line is abnormal: use an external power supply to supply power to the mobile phone, use the telephone meter to detect whether there is a change in the indication, if there is no change, it is likely that the boot line is broken or the boot button is not in good contact.
2. The power supply circuit of the battery is abnormal: use the external interface to supply power to the mobile phone, see if it returns to normal when it is turned on, if it is normal, it is determined that the power supply circuit of the mobile phone is abnormal.
3. The IC of the mobile phone power supply is abnormal: test the test point of the peripheral circuit of the power supply IC according to the circuit schematic diagram to see whether the test value is normal.
4. The system clock and reset of the mobile phone are abnormal: you can use the dual total oscilloscope to detect the CPU power supply of the mobile phone to check whether the waveform in the reset is correct.
5. Problems with logic circuits: that is, faults in mobile phone circuits, which can generally be solved by repair welding.
6. Software conflict: The installed software does not match the system of the mobile phone, which may also cause the mobile phone to fail to boot, you can connect the mobile phone to the computer to delete the program.
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2.If there is a problem with the system itself, the system can be upgraded or the factory settings can be restored;
3.If the mobile phone is flooded and the cable or related chips are damaged, so the buttons do not respond, you can go to the mobile phone store to reset the button function, usually at a price of about 50 yuan;
4.If there is dirt under the button, you need to disassemble the phone, and then clean the debris around the button with alcohol, you can contact a professional maintenance personnel for repair.
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Mainly due to the following reasons:
1. If the system is unstable, or the system software function is not normal for a long time, it can be solved by completely clearing the system data and user programs.
1. Press and hold the volume down button + power on button at the same time in the shutdown state.
2. The boot interface appears, release it, and enter the recovery flashing tool for a while.
3. Through the volume up and down, select wipe data, OK (the volume button is selected up and down, and the power button is OK), the option appears, and yes is selected.
4. Click Wipe Cache after returning to the menu automatically until it automatically returns to the main menu.
5. Select reboot and reboot.
If it is a Chinese menu. It's the same with choosing to perform data purging and emptying the cache, respectively.
Second, if the above methods cannot be solved, it is a hardware problem, and generally the mobile phone will have such a problem. You can only find maintenance personnel to solve it.
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If the mobile phone cannot enter the system page after booting up, and the screen is stuck or frozen, it is recommended to:
1.Please press and hold the power button and the down volume button at the same time for more than 7 seconds to restart the device; If it is a mobile phone with a removable battery, please press and hold the power button for 8-10 seconds to restart the machine, if it does not work, please turn off the battery and reinsert it.
2.If the problem persists after restarting the machine, it is recommended that you bring the purchase receipt, repair card, and machine to the Samsung service center for inspection.
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Hi! If you have backed up your data before, or there is no data in your phone that needs to be backed up, it is recommended that you try to enter recovery (turn off, press and hold the volume up + power on button to enter recovery mode) to clear all data, do not restore data for the time being after booting, see if it can solve the problem, if it still can't be solved, it is recommended that you try to brush the line to the latest development version.
Please flash according to the flashing tutorial, and the sixth way is line brushing:
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Nokia is still easy to disassemble, remove the battery, disassemble the phone, soak a little alcohol in a soft cotton cloth, wipe the dirt on the keypad and the motherboard, dry it and install it, the slow response may be too much. Hope to adopt.
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There are many reasons for the unexpected stop of the process,It is normal for the intelligent machine to crash or something,There are many unexpected stops of the process,In this case, the landlord can restart the machine,If it occurs repeatedly, the landlord can restore the machine to factory settings,And install the relevant software of QQ mobile phone housekeeper or 360 mobile phone guard in time,If the above methods can not solve the problem of the landlord, you can consider flashing,System problems can be solved!
Hope it helps!
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Kiss is happy to answer for you: What is the reason why the mobile phone does not respond to the boot button Answer: Kiss 1, the boot line is not normal caused by the boot line under normal circumstances, when pressing the boot button, the trigger voltage of the boot button should change significantly, if there is no change, it is generally the boot button contact is not good or the boot line is broken, and the components are soldered and damaged.
When repairing, use an external power supply to supply power, observe the change of the ammeter, if the ammeter does not respond, it is generally a bad power line or power button. 2. The battery and various parts of the power supply circuit are not turned on. There are two ways to power your phone:
One is battery, and the other is powered by an external interface (when powered by a charging dock). When the two power supplies are supplied at the same time, the external interface power supply is preferred, and the switching of the two power supplies is controlled by the electronic switch tube, which mainly protects the current of the whole machine and prevents the integrated circuit inside the mobile phone from being damaged due to short circuit or leakage, but if the electronic switch is damaged, the power module may not get the power supply voltage of the battery and the mobile phone does not turn on. 3. The system clock and the camera reset are not normal.
4. The logic circuit is not normal and does not turn on. Mobile phones often cause deformation of the board in use, such as buttons, bumps and other external forces will cause some chips to be desoldered, and generally repair or re-soldering these chips will solve most of the problems. 5. Poor LCD screen, short circuit of components (especially power amplifier), etc., may cause the mobile phone not to turn on.
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If you are using a vivo mobile phone, you can troubleshoot it as follows:
Circumstance.
1. The screen does not turn on when the device is turned on, and the device does not vibrate or other reactions
Check whether the battery is sufficient, charge the device for more than half an hour, and try to turn it on again;
If the device is stuck, damaged, or liquid, please bring the device to the vivo customer service center for further maintenance.
Circumstance.
2. When you press the power button to turn on or force restart (press and hold the power button and the volume down button for more than 10 seconds at the same time), the device vibrates, but the screen does not display the screen
If the device vibrates, but the screen is still black, it is more likely that the screen is faulty, please bring the device to the vivo customer service center for further maintenance.
Circumstance.
3. When the computer is turned on, the screen has a screen display, but it cannot enter the desktop:
1. Force restart the device to try to resume use.
Force Restart Phone Method:
FunTouch OS and later models: Press and hold the "Power button" + "Volume Down button" at the same time for more than 10 seconds;
Press and hold the top round button for more than 10 seconds to force restart the phone (applicable to NEX 3 NEX 3S);
FunTouch OS previous models: Press and hold the "Power button" for more than 12 seconds.
2. Try to repair the system through the "System Repair Mode".
Operation method: Models released before September 2017 (models before x20): Press in shutdown status"Power button"with"Volume up key"Enter recovery mode;
Models launched after September 2017 and new models (X20 and later) are buried in the party: press the shutdown status"Power button"with"Volume up key"Enter fastboot mode, then enter recovery mode through the menu selection, select: install system software, and then select:
Networking updates to the latest version;
NEX 3 NEX 3S: Press and hold the top round button for about a second in the shutdown state, then press and hold the volume up button to enter fastboot mode, press the volume down button to move to"Go to Recovery", press the power button to confirm to enter recovery mode.
Folding screen: Operate in the shutdown state, press and hold the "Power button" and "Volume Plus button" at the same time for about 5 seconds to enter fastboot mode, press the volume button to select "Enter Recovery", and press the power button to confirm the entry.
In the recovery mode interface, select "Install System Software", and then select "Update the latest version online", and repair the system according to the prompts.
Go and select your current city to get it. )
Tips: It is recommended to bring relevant purchase vouchers (such as: purchase invoice, warranty card, ID card) when you go, and consult the staff of the consulting center in advance to ensure that the staff goes again during normal working hours, avoid empty running, and pay attention to safety on the road bend.
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There are too many reasons why the phone does not turn on, such as system problems, battery problems, and the reasons why it does not turn on!
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You can force the phone to start and try it, but if it doesn't work, you can only go to the mobile phone store.
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