After the Apple phone crashes, what should I do if the white screen is displayed after charging the

If the screen color of the mobile phone is abnormal, such as black screen, splash screen, flower screen, white screen, red screen, etc., it is recommended to:

1.It is recommended to restart the phone to try: Press and hold the power button and the down volume button at the same time for more than 7 seconds to restart the device;

3.If it comes with system software, it is recommended to update the system version of the mobile phone to try: please go to Settings - About the phone (about the device) - Software update (system update) - Update (please back up the data in the device before upgrading).

If the problem persists, it is recommended to bring the purchase invoice, warranty card and mobile phone to the local mobile phone purchase office for repair or to a nearby mobile phone repair shop for repair.

1. Press and hold the home button and power button of the phone until the Apple logo appears, and then let go, and force restart the phone.

2. In daily use, don't open too many background programs, double-click the home button of the phone, swipe up to close the programs running in the background of the phone, turn on and off regularly, and clean up the cache of the phone.

3. Sometimes the crash is also related to the iOS system, please upgrade the iOS system to the latest version. After upgrading to the latest version of iOS, the touch screen function will be restored.

Reasons for the black screen of the iPhone:

One: The iPhone itself is a refurbished machine or other machine with quality problems, and there will be an unstable black screen under occasional circumstances, but it is not a damage to the screen.

Two: Entered Apple's DFU mode by chance, which is Apple's recovery mode.

Three: It may be that Apple's system won't boot.

Four: The hardware is damaged and the screen is broken.

Five: 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 recommended to bring your mobile phone to a regular Apple customer service center for inspection and repair.

Possible causes and solutions for black screen not charging:

Charging equipment. For example, if the data cable or charging head is abnormal, replace the test separately.

Battery failure. For example, loose, deformed, etc., replace the battery.

Software glitches. Generally, flashing can be solved.

Hardware failure. For example, the charging interface is in poor contact, etc., and it will be sent for repair.

Other. For example, there are too many software running in the background, resulting in the input being less than the output, causing the phenomenon of not charging pants.

When charging, Apple's menu button (the one in the middle) and the lock screen button (the one on the head) can be pressed at the same time to turn it on.

Reasons why your phone has battery but won't turn on:

The boot line is abnormal: use an external power supply to supply power to the mobile phone, use the electricity 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.

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.

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.

The phone's system clock and reset are abnormal: You can use the dual total oscilloscope to check the phone's CPU power supply to see if the waveform is correct during the reset.

Problems with logic circuits: that is, faults in the circuit version of mobile phones, which can generally be solved by repair soldering.

Software conflict: The installed software does not match the system of the mobile phone, which may also cause the mobile phone to not turn on, you can connect the mobile phone to the computer to delete the program. <>