What should I do if my iPhone suddenly shuts down or has a black screen failure?

a.During normal use, the iPhone suddenly went black and did not respond. When this happens, press and hold the power button and the home button at the same time for about 10 seconds to rule out hardware issues, which is very effective.

b.If it still can't turn on, you can try to connect to the computer, if there is still no response, you can choose to flash the iPhone into DFU mode. In the case of repeated flashing and still failing, it is very likely that there will be hardware problems, and the best way to do this kind of problem is to go to an Apple authorized service center and hand over the phone to a professional repair engineer for testing and repair.

2.Sudden shutdown of the fault problem:

a.If your iPhone shuts down automatically when the power is in normal use, it is more related to a system problem. The most basic thing to do is to check the system for new updates, and a new version of Apple's iOS system will fix the iPhone battery problem.

Sudden shutdown may be caused by poor battery contact. It could also be due to a serious failure of the system, resulting in a sudden crash. In addition, if the screen is not turned off when the screen is black, but some other buttons or functions are responsive, it may be a problem with the motherboard, and the battery will not cause the black screen.

It is recommended to go to the after-sales inspection to check it.

Go to Apple's after-sales store to repair it, maybe the electric board is not used, or it may be insufficient memory to get stuck in the machine.

I'm an apple repair master, so I'll talk about it.

The black screen of iPhone is generally divided into several situations, 1. The software and system are incompatible and stuck.

2. Battery problems.

3.Problems with the motherboard chip.

First, you can press the volume up, then press the volume down, and then press and hold the power off button for 5 seconds. This kind of system problem can basically be solved in seconds, you can try it.

Second, the battery problem is good to replace the battery.

Third, the motherboard problem does not necessarily mean that the motherboard must be changed.

Motherboards are made up of hundreds or thousands of small chips, capacitors and resistors.

Including CPU, power chip, power supply chip, display chip, hard disk, and baseband circuit, you generally only need to find out the faulty chip to replace, and you don't need to replace the entire motherboard at all.

Many masters in small places don't know how to repair the motherboard, and when you encounter a problem with the motherboard, you will be asked to replace it entirely.

It's very unnecessary, the chip is only a few hundred smaller.

It costs 23,000 to change the motherboard.

I've been doing motherboard repair work in Apple factory stores, so I know a lot about these.

Friends who don't know can be gamma, and the screen name ID is.

Reasons for the black screen of your iPhone: It may be caused by an internal conflict in the software you have installed. In serious cases, the screen will restart and so on.

It is also possible that the mobile phone has been used for a long time and the heat is not dissipated in time. As long as you press and hold the power button and the exit button (home) at the same time for about 10 years, it will force the shutdown and then restart it. However, it is generally not recommended to force a shutdown.

There is an impact on mobile phones.

The solution to the black screen of the iPhone:

If you enter DFU mode, you will exit according to the exit method of DFU mode.

If the screen is normally black, try connecting the phone to the computer iTunes or press and hold the power button until it can turn on.

If you accidentally press the recovery mode and cause a black screen, press and hold the home button and the power button together, press and hold together for about 15 seconds and let go, and then press the power button to recover.

The black screen is basically a software problem, power button + home button and press and hold for 10 seconds at the same time to see.

Use an external power supply to power the mobile phone, use the power meter to detect whether the indication has changed, if there is no change, it is likely that the power cord is broken or the power button is not in good contact. Test on the test point of the peripheral circuit of the power supply IC according to the circuit schematic diagram to see if the test value is normal.

What to do if the black screen of the apple iphone turns off automatically in winter? Teach you how to deal with the solution, the probability of happening in the north is greater than in the south.

1. The boot line is abnormal: use an external power supply to supply power to the mobile phone, use the electric meter to detect whether the indication has changed, 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 the circuit version of mobile phones, 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.

Excluding the factor of no power is that the mobile phone system is wrong, it is recommended to choose Niu Xuechang Apple mobile phone repair tool to repair.

1. Launch Tenorshare iPhone Repair Tool (REIBOOT - iOS) on PC or Mac. If you have any other questions, you can contact customer service directly. <>

2. Select "Standard Repair" or "Deep Repair" according to the specific situation.

Note: Standard repair will not cause data loss, but deep repair will cause data loss, so you need to back up data in advance. <>

5. The repair process will take about 10 minutes, please do not disconnect the connection between the computer and the mobile phone, after the repair is completed, the repair success interface will pop up according to the prompts.

If the standard repair doesn't fix your iPhone system issues successfully, you can also choose to use the Deep Repair feature. However, as mentioned earlier, deep repair will cause data loss, so make a backup in advance. <>

If you want to know more about repairing iOS system, we recommend you to choose Tenorshare iPhone Repair Tool. Tenorshare iPhone Repair Tool can fix simple iOS system problems in standard repair mode without data loss, one-click free entry and exit iPhone recovery mode for free; At the same time, ** promises a 7-day invalid refund, and you can enjoy a lifetime free update after purchase.

Dear, can I still turn on my computer after a black screen, and does it often go black?

Questions. The screen is black and can't be turned on.

Press the power button to turn on the screen, but it's always gray.,What's going on.。

Pro, Settings—General—Accessibility—Display Adjustment—Color Filter Selection Off, and that's it.

Questions. The point is, I can't open it now.

You can also try the first step of flashing, first press the power button to turn on, when the screen will appear Apple logo, do not release the power button; Step 2: Then press and hold the home button on the home screen until the screen goes black. Step 3: When you see the screen black, please release the power button and continue to press and hold the home button on the home screen until the iTunes on the computer side of Yanyan appears and detects an iPad that is in a recovery mode.

Computer link iTunes

Questions. Didn't I have a broken screen?

Dear, it may be that the phone is damaged inside, or it may be other reasons.

Dear, there is no obvious damage to the screen, and the system files inside the phone are damaged.

Questions. Then can I get it to the mobile phone store to have it repaired?

Dear,Yes,Take it to the mobile phone city for repair,See if you can not flash the phone,Keep the files of the phone。

Questions. That's about how much it can be fixed.

Pro-wheel Senma, this is uncertain, because it is impossible to judge whether the parts inside Chunchang are damaged, but which should be cheaper, because there is no major damage. A few dozen pieces, one or two hundred should be fine.

In this case, the most likely thing is that the phone is out of power, and there are very few rulers who lose their phones because the chip is broken, you can take the mobile phone to repair it and check it.

I'm glad that for you to suddenly shut down with a black screen, it may be a delay in the battery's dusty question, because the Apple phone will have a cold refrigeration mechanism in winter, and if you answer correctly, it will shut down because of the temperature.

Apple mobile phone suddenly black screen,Brother,Then I think this may be a hail screen problem with the phone,If he can make a sound,Then this may be the screen needs to be replaced,Otherwise, the source dust core,This may affect your use effect。

The Apple phone suddenly turned off with a black screen, what's going on? It may be that the Apple mobile phone system or hardware is faulty, then you should go to a special repair shop to take the Apple mobile phone to a special repair shop to repair it to see the specific situation, and then Sun Jianchang will do further repairs.

If the system crashes and shuts down occasionally, it can be forced to start.

The iPhone suddenly goes black but is powered on: because the device is overheating, the internal temperature of the device is beyond the normal operating temperature range, and the device tries to adjust its own temperature to protect the internal components.

1) Charging (including wireless charging) slows down or stops.

2) The display screen is dimmed or black.

3) The cellular mobile radio component enters a low-power state. During this time, the signal may become weaker.

4) The camera flash is temporarily unavailable.

5) Slower performance when using graphics-intensive or augmented reality apps or features.

Several situations and solutions for the black screen of the Apple mobile phone and the solutions:

One situation where the iPhone itself is unstable, resulting in a black screen. This kind of black screen can be attributed to an unstable automatic shutdown, which is because the machine is of poor quality, resulting in shutdown for no reason. Because there is no big problem with the hardware, you can just press and hold the power button and wait for it to turn on.

The second scenario. DFU mode is the mode in which the Apple system cannot be turned on if there is a problem, while entering the recovery mode can be recovered with iTunes. But the phone is fine, and it can't be turned on because it can't be turned on because it has entered DFU mode by mistake, but it's actually very easy to solve.

You only need to press and hold the power button and the home button at the same time and wait for the iPhone to react, generally for more than 10 seconds, if there is no response for tens of seconds, the following steps continue.

In the third case, you need to enter DFU mode, first of all, iTunes must be installed on the computer, and you can ** a new iOS system. Or restore files with a backup beforehand. Of course, during the recovery process, the computer can be connected to the Internet, and it can also be ****, but the wait is longer.

If the battery on the phone is low or malfunctioning, the screen will automatically go black when it is turned on.

It is recommended to contact the local official after-sales service center for after-sales help to detect the cause of the failure and repair it.

It may be that a certain program has been entered, the program is waiting, or the program network is delayed, resulting in a black screen. If it doesn't work, try it again.

In the boot state, that is called restart, and the black screen is the black screen.

I was like this just now.,Just force a restart according to the method given by the official.。

The reasons and solutions for the sudden black screen shutdown of the Apple phone are as follows:

1. Try restarting and turning on your phone.

If the phone is used for too long, or the application occupies too much memory, it will also cause the phone to shut down automatically with a black screen, you can try to restart the phone to see if the phone can be used normally, the iPhone phone restart has the function of background refresh.

2. Check whether the mobile phone has power.

If the iPhone phone suddenly has a black screen and automatically shuts down, you can check whether the iPhone has no battery first, causing the phone to turn off automatically with a black screen. Plug in your iPhone and check if it's because of battery problems.

3. Check whether the charger is normal.

At the same time, it is also necessary to check whether the mobile phone charger is working normally, if the mobile phone's charger is damaged, or can not be charged normally, it will also cause the iPhone to automatically shut down the inner screen because it is not declared.

4. Check whether the battery is normal.

Check for yourself whether there is a problem with the battery of the iPhone, such as the charging amount and standby time of the phone, whether it is in line with the normal situation. If you want a more professional mobile phone battery test, you can go to a mobile phone store and ask the staff to test the mobile phone battery.

5. Check whether the screen is normal.

If the phone screen is damaged, it will also cause the phone to have a black screen and cannot display the phone content normally. If the mobile phone screen is damaged, then you can only go to a professional repair place and let the staff help you repair it.

6. Detect whether there is a problem in the system.

If it is a system problem, usually choose a professional iOS system repair tool "Tenorshare iPhone Repair Tool", which is simple to operate and can be recovered by one-click scanning.

Tenorshare iPhone repair tool.

If you want to know more about iOS system repair for iPhone, we recommend choosing Tenorshare Repair Tool for iPhone. Tenorshare Repair Tool for iOS devices can easily fix 150+ iOS devices with white apples, black screen, non-stop restarting, stuck in recovery mode, update failure, unable to boot and other system issues; At the same time, it supports all iOS devices and versions, including the latest iOS15 iPadOS15, iPhone 13 13 Pro 13 Pro Max 13 mini, and the professionalism is worthy of the trust of the majority of users.