vivox21 screen is broken, the screen is not bright, can it be used if the screen is changed?

It is recommended to bring your mobile phone to the vivo customer service center for testing and repair.

You can enter the vivo official website vivo**app--my--maintenance** or enter the vivo official website web version--service--accessories**query--select the accessories that need to be replaced for inquiry. The specific test is also subject to the service center inspection, and the test results and maintenance parts will be informed before maintenance**.

Note: Replacing parts at the official customer service center only charges the cost of accessories, and labor costs are waived.

Customer service center address: Enter vivo official website vivo**app--my--outlet query or vivo official website web version--bottom of the bottom -- service support--service outlet inquiry--select the province and city to query the customer service center address.

If the mobile phone terminal fails during the use of vivo mobile phone, it is recommended to go to vivo's professional maintenance department for maintenance and consult the specific maintenance cost.

The method of making an appointment for vivo official repair service is:

1. Enter the official website of vivo and click "Appointment for Maintenance" in "Service Support" at the bottom;

2. Use the vivo password to log in on the pop-up page, if you don't have one, you can register a new one;

3. After logging in, select the corresponding city in the "Location of the Appointment Network", select the nearest official maintenance point in the "Nearby Service Outlet", select the date and time to make an appointment for maintenance in the "Please select the appointment time", select the model of the mobile terminal to be repaired in the "Please fill in the product model", fill in the name and contact ** in the "Please fill in the personal information" field, and finally "Submit".

If the mobile phone battery cover is broken, the vivo X21 mobile phone battery cover** is 195 yuan, if you need to replace it, it is recommended to go to the local vivo after-sales service center to test and replace.

How to disassemble vivox21:

1. First of all, turn off the mobile phone; Take the card tray: Insert the card pin into the hole, push it up, and remove the card tray.

2. Separate the back shell, the next thing to do is to separate the back shell, first remove the two 6-foot screws at the bottom of the bottom of the phone. Then use the pry blade to cut the screen left and right from the gap, open the screen, and after opening the screen, you can see the structure inside, which is still a common three-stage type, which will be disassembled from top to bottom.

3. Remove the 3 screws on the buckle fixing bracket, cut off the power, use the insulating rod to disconnect the power connector on the right side first, power off the system to prevent short circuit, and then disconnect the screen display cable, the bottom PCB cable, and the side button cable, and finally disconnect the coaxial cable on the right side of the motherboard.

4. Remove the handset sensor bracket again; , and then disconnect the sensor BTB. Finally, remove the motherboard.

5. Use tweezers to remove the earpiece from the noodle cover.

6. Use a plastic spudger to pry the front and rear camera buckles open and remove the front and rear cameras.

7. Disassembling the battery; Lift the transparent glue on the right side of the battery, then pick up the green handle, use a little force upward, take out the battery, and if you can't take it out, you can blow a blow around it with a hair dryer to deglue.

8. Unscrew the fixing screws of the speaker box, a total of 7, and then remove the speaker module. Disconnect the BTB and coaxial cables, and remove the bottom plate.

9. Disassemble the induction FPC, volume side button FPC, coaxial cable, motor, and antenna board on the face cover in turn.

The phone has a black screen. If it fails to turn on, it can be handled as follows:

1. Check whether it is caused by low battery power.

After charging for 30 minutes with the standard charger and data cable, press the power button to see if there is a charging screen.

No charging screen: Please replace other chargers and data cables that can charge normally to confirm whether the charger and data cable are abnormal. If there is still no charging screen after replacement, it may be a fault of the mobile phone, it is recommended to bring the mobile phone, charger and data cable, and purchase voucher to the customer service center for testing.

There is a charging screen: please press and hold the power button to try to turn on, if it can't be turned on, please deal with it according to the method below.

2. Confirm whether the mobile phone has been liquidated or damaged.

Liquid intake of the mobile phone: If the mobile phone has been automatically turned off, please do not try to turn it on, use a paper towel to absorb the liquid, and send it to the local vivo customer service center for testing as soon as possible.

Lost mobile phone: There are unstable factors after the mobile phone is damaged, so it is recommended to send the mobile phone to the local vivo customer service base imitation center for testing.

3. Press and hold the "Power Button" + "Volume Down Button" for more than 10 seconds at the same time to force restart the phone;

4. Enter recovery mode -- install system software -- update the latest version on the network -- OK -- connect the available wifi and charger, and click when the upgrade package is detected"** and install"update and repair the system;

How to enter recovery mode: press the "power button" and "volume up button" for about 5 seconds in the shutdown state, then let go, enter fastboot mode, press the volume key to move to "enter recovery", press the power button to confirm to enter recovery mode;

5. If the above methods fail to solve your problem, please back up your mobile phone data in advance and bring your mobile phone to the vivo customer service center for testing. (Inquire about the address of the vivo customer service center: enter the vivo official website vivo**app--my--outlet inquiry or vivo official website web version Hengfeng crack--slide bottom--service support--service network query--select the province and city to query the customer service center address).

Tips: It is recommended to bring relevant purchase vouchers (such as: purchase invoice, warranty card, ID card, and consult the staff of the consultation center in advance to ensure that the staff goes again during normal working hours, avoid empty running, and pay attention to safety on the way to and from the home.

If you change the original screen, it may be between seven hundred and eight hundred, and if you don't change the original screen, it should be cheaper, two or three hundred,

It should be possible to double-click the screen to turn on the screen is achieved with touch and proximity sensor The screen should be no problem after changing unless the screen quality or**Too cheap is not easy to say.

If the screen is changed to a black screen, then the false Li explanation is not a problem with the screen at all, but the problem of the internal parts of your mobile phone, which should be repaired and overhauled.

There are two reasons for slipping,The first reason is that the line inside is not in good contact,Royal infiltration will cause the screen to go black,The second reason is that the screen is not good。 The screen spine must be replaced.

Reasons for the black screen of the phone:

1.Under normal circumstances, when the mobile phone stores too many things, many friends can feel that the mobile phone is running too slowly, and when their mobile phone is occupied by 80% of the memory that can be driven, it may crash.

2.This is the loosening of the contact of the mobile phone screen, which is not a big problem, but it can directly lead to the black screen of the mobile phone, which is difficult to find and can only be found after a lot of tests, which is generally caused by the mobile phone being bumped.

3.It is common for many mobile phones to have a black screen after using it for a long time, the main reason is that the effective use time of the mobile phone battery is 1 year, or it is three years but there is a problem in one year, and excessive use leads to the aging of the mobile phone's battery and insufficient voltage.

4.There are a lot of applications for smartphones nowadays, but there are some software that are inherently conflicting, which can also lead to a black screen, so the black screen after installing a lot of software is basically this reason.

5.Many people are keen to brush the phone and use a better system, in fact, some systems are not very supportive, and some are not complete, resulting in a black screen when using it in the future. Most of the black screens in use are caused by the third-party software of **, and this phenomenon is rarely caused by the software that comes with this machine.

There may be two reasons: there may be a problem with the software itself, such as the software itself is unstable or does not match the mobile phone system, and uninstalling the software can solve this problem; If the software is not compatible with each other, it is necessary to install and uninstall the software one by one, and experiment to check which software is the problem. If you find it, uninstall it, and the problem will basically be solved.

The black screen in standby is mainly due to the fact that the mobile phone will automatically turn off the screen if it does not detect the key trigger signal for a long time, that is, standby, when you need to use the mobile phone, the button will activate the circuit in the mobile phone, and then the screen will light up. No matter what brand of mobile phone, the circuit board and screen are "computer programs" mechanized docking and welding when they are produced in the factory, and the accuracy is quite high, and after the assembly is successful, multiple programs are required to scan and detect the key before it can leave the factory.

The mobile phone screen is broken, and the replacement from the new is to send it to the after-sales service for maintenance, and it is also manual docking and welding, and the accuracy of the manual will never be as accurate as the mechanized one-time assembly, so the mobile phone after the screen is replaced is very easy to have this and that failure again.

This can only be sent back for after-sales maintenance again, and it is basically impossible for individuals to deal with it.

What should I do if the screen is black without RRA, our class Jingyan has a black screen after changing the screen, I use this may not be in line with it, and it can be replaced.

Re-shut down and start to try, it still doesn't work, it's just not repaired, let continue to repair.