What is the cause of the sudden black screen of the Apple 8 when it is turned on?

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.

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Summary. Hello dear! Workaround:1Whether it is a hardware problem 1Test it out with an external power supply. After plugging in the charging device, if it can be turned on, it is a problem with the battery, and you can buy a battery replacement.

Hello. Anyone.

Hello dear! Workaround:1Whether it is a hardware problem 1Test it out with an external power supply. After plugging in the charging device, if it can be turned on, it is a problem with the battery, and you can buy a battery replacement.

Pro, 2If it's not a battery problem, let's see if there is a problem with other hardware, such as a broken mobile phone screen or a black screen caused by water inside, this must be sent to Apple's after-sales service outlets for repair. (Hint:.)

iPhone put the liquid touch indicator on the SIM card, after taking the card, if you see a red or pink dot, it indicates that there is water, under normal conditions, it is white or silver) 3, software problem handling method 1Test from the beginning, pressing the power button and the home button at the same time to turn the machine off and on until the white apple logo is displayed.

Pro, 2If method 1 doesn't work, plug the power supply into the test and press both keys at the same time to check if the battery suddenly runs out and shuts down automatically. If the first two methods don't work, it's time to get into the recovery form of your iPhone.

Normally, you can connect your iPhone to the computer and press the Home + Power button for about 10 seconds to show up the recovery options. Press Restore OK, Apple iPhone8 Plus or iPhone8 Restore.

When the mobile phone stores too many things, it will not only greatly slow down the running speed, but also it is easy to black the screen during the running of the program, and then automatically exit the program, when the mobile phone is occupied by 80% of the memory driven, it may crash or black and the screen may be blackened. You can force restart, take the iphone8 phone as an example, the steps are as follows:

1. Turn on the computer and double-click the "iTunes" icon on the desktop.

2. Enter the interface of the "iTunes" app.

3. Press and hold the volume control button at the bottom of the left side of the phone, and connect the computer to the phone with the data message cable at the same time.

4. Then the phone will enter recovery mode.

5. And "iTunes" will pop up a dialog box, click "Update" in the dialog box.

6. After the mobile phone is successfully updated, there will be a "Hello" sliding welcome interface.