The mobile phone screen is not lit, the inner screen is cracked, the button light is still on, how m

If there is a problem with the screen of the Samsung mobile phone, in order to understand and solve the problem of the mobile phone in a more targeted manner, it is recommended to send the mobile phone to the nearest Samsung service center for testing and processing.

If the warranty period has been exceeded, the warranty conditions are not met, etc., the service center will give specific accessories and maintenance costs**.

For reference, please log in to the After-Warranty Repair Parts Reference** inquiry interface (enter Samsung's official website - click on after-sales service - self-service - spare parts ** query).

Out-of-warranty maintenance spare parts refer to ** query, be sure to fill in the items with * and verification code and click "Submit".

2.Select "Screen" for spare parts

3.The full model number needs to be entered.

1. Click "Spare Parts**Query" in "Maintenance and Technical Support" at the bottom of the Huawei official website, and you can search for mobile phone spare parts** by mobile phone model.

It is recommended that you back up your data in advance, bring the warranty certificate or purchase invoice, and go to the local Huawei customer service center for maintenance.

Suddenly the screen of the phone does not light up, possible situation:

1. If the contacts touching the battery are dirty, clean them.

2. The inner line of the power supply is loose, and the machine is disassembled for inspection.

3. Cable problem, whether it is a straight board, BAI or flip cover, as long as it is a mobile phone, there will be a possibility of wire damage.

4. Try to reboot the computer and press the arrow keys or 147 keys to see if the screen goes black when you touch these keys, and if so, make sure the cable is broken.

The screen does not light up all the time, this phenomenon is called a black screen, and the reasons for this phenomenon are as follows:

The phone is overheating: After opening too many programs, the CPU load of the phone is too high, the phone is hot, and the screen is not powered enough to cause the screen to be black, it is recommended to close other programs running in the background.

If the phone is close to the ear or away from the ear during the call, the screen is black, and the mobile phone sensor is suspected to be damaged and needs to be repaired.

ROM problem: Some self-made ROM packages have bugs, so that the screen is black when opening some software, it is recommended to change the ROM package and reflash the system.

Cable fault capacity, poor contact or motherboard damage: If the above reasons still cannot be solved, it is suspected that it is a cable fault, and it is recommended to go to the mobile phone after-sales point for inspection and repair. Hope mine can help you, hopefully.

Hello, this is a cable problem, whether it is a straight board or a flip cover, it is the possibility that the cable will be damaged on the mobile phone. 1.Reboot and press the arrow keys or 147 keys, see if you touch these keys and the screen will be black, if so, make sure that the cable is broken, and the screen has not been lit, this phenomenon is called black screen.

2.After the phone is overheated and multiple programs are opened, the mobile phone is overloaded, the phone is hot, and the screen is not powered enough to cause a black screen, it is recommended to close other programs running in the background.

3.When the phone is close to the ear or away from the ear when talking, the screen is black, and the phone sensor is damaged and needs to be repaired.

5.If the cable fault, poor contact or motherboard damage cannot be solved after excluding the above reasons, go to the mobile phone after-sales point for inspection and repair.

After the question is changed, the screen lights up at first, and the screen goes black after replugging and unplugging.

If you change the screen by yourself, then consider the problem of the lower cable, most of the black screen is the problem of the cable, or you need to repair the place of the phone.

1. First check whether the FPC of the screen is not plugged in from the appearance, and whether there is obvious damage to the socket 2. See if this mobile phone has a screen version to distinguish, I have been hit once before 3, and then change the assembly to see if it can be lit, 4. Install the original bad screen to see if it can be lit.

5. Replace the screen that does not light up to other motherboards Whether it can be lit up After 3 4 5 steps, you can judge whether it is a problem with the motherboard or the screen.

It is estimated that it was not replaced, and then go there to find him to help you get it right.

The cable is not plugged in properly, the screen is not right, and the cable of the display screen is reinserted.

Summary. Dear dear, it's a pleasure to answer your <>

After changing the screen of the phone, the screen does not light up because:1Poor screen connection:

When replacing the screen, the screen is not connected properly, resulting in the screen not working properly. 2.Broken screen:

There is a problem with the screen itself, or it was damaged during the replacement process, causing the screen to not work properly. 3.Low battery:

After replacing the screen, the battery may have run out of power and needs to be charged before it can be used properly. 4.Hardware failure:

After replacing the screen, there may be other hardware failures that cause the screen to not work properly<>

<> what happens if the screen doesn't light up after changing the screen of the phone.

Dear dear, it's a pleasure to answer your <>

After changing the screen of the phone, the screen does not light up because:1Poor screen connection:

When replacing the screen, the screen is not properly connected, resulting in the screen not working properly. 2.Broken screen:

There is a problem with the screen itself, or it was damaged during the replacement process, causing the screen to not work properly. 3.Low battery:

After replacing the screen, the battery may have run out of power and needs to be charged before it can be used properly. 4.Hardware failure:

After replacing the screen, there may be other hardware failures, and the screen does not work properly due to the holding of the screen<>

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The risks of changing the mobile phone screen are: 1. The screen is originally formed and replaced by an officially recognized or more formal mobile phone repair shop, and the gap between the screen replacement and the use before the replacement is not large; 2. It is not the original screen component, the display effect and quality of the non-original screen itself are not as good as the original screen, and the touch sensitivity is also inferior to the previous original screen; 3. The assembly process of replacing the screen also has a great impact on the use of RI after use. If there is uneven adhesive at the adhesive between the screen and the frame, it will cause dust to enter the inside of the fuselage after RI, and the hardware failure of the mobile phone will occur; 4. The macro screen of the non-original screen upgrade key will also cause the difference between the appearance of the fuselage and the common use of RI<>

<> what happens if the screen doesn't light up after changing the screen of the phone.

Hello dear, I am honored that this question has been missed and I will answer for you, so I will help you to inquire: after the mobile phone changes the screen, the screen does not light up just because: the power cord is not connected when changing the screen, or the wiring is bad, you can check whether the wiring is correct.

2.If the screen book is faulty, you can replace it with a new screen; 3.If the motherboard of the mobile phone is faulty, you can try to replace the motherboard; 4.

If you don't connect the backlight of the screen when you change the screen, you can check whether the backlight is wired correctly; 5.If the backlight of the screen is faulty, you can try to replace it with a new one. Thank you for your patience.

That's all my reply, I hope it helps!