The black screen of mobile phone is a common fault, which can be divided into two situations: black screen in use and black screen in standby.The possible causes and solutions of the black screen problem will be discussed in detail below. The black screen problem in use is usually caused by third-party software, which is rarely the case with the mobile phone's own software.Specifically, there are two possible reasons: one is that the software itself has problems, such as instability or incompatibility with the mobile phone system;In this case, it is easy to solve, just uninstall the software.The other is that there is a conflict between software, which needs to be tested and eliminated one by one to determine which software caused the problem.Once the problem is found, simply uninstall it. The problem of black screen in standby is due to the standby principle of mobile phones: most mobile phones are equipped with an energy-saving circuit, which will automatically turn off the screen to save power when the key signal is not detected for a long time.When the phone needs to be used, pressing any key will activate the power saving circuit and make the screen light up again.However, in some cases, the delay of the screen trigger circuit causes the black screen problem. Specifically, when the mobile phone system sends the command to light up the screen, but the command cannot be delivered to the screen in time due to the delay of the trigger circuit, resulting in the phenomenon that the screen is not lit.However, the mobile phone system mistakenly thought that the screen had been lit, which led to a black screen problem. To sum up, the black screen problem of mobile phones is usually caused by third-party software, and may be related to unstable software or incompatibility with the system.In addition, the black screen in the standby process is often caused by the delay of the trigger circuit.I hope the above content will help you!
1、 It is recommended to try the following operations when the mobile phone or tablet suddenly goes black: 1. Replace a mobile phone battery of the same model for testing 2. Take out the battery, clean the battery metal contacts and mobile phone metal contacts with rubber, and then press the power on key to try.3. Take out the SIM card and SD card at the same time, and then press the power on button for more than 10 seconds to test whether it can be turned on.If it still cannot be started, it may be that there is a problem with the system program or hardware. It is recommended that the mobile phone be sent to the maintenance point for inspection.2、 The repair location and maintenance information are as follows: 1. The address and telephone inquiry website of Xiaomi Home are:http://www.mi.com/c/service/poststation/2. The working hours of Xiaomi Home are from Tuesday to Sunday, from 10 a.m. to 6 p.m.3. The after-sales service of Xiaomi mobile phones is: return guarantee within seven days, replacement guarantee within fifteen days, and 4. one-year warranty
It is recommended that you back up important data first, but Kurt only wants to adjust two times before entering Recovery to clear all data. After starting up, do not restore data temporarily to see if it can solve the problem.(Backup: Security Center - Backup, backup the data you need. Clear data: In the power off state, press and hold the volume increase key and the power off key, and when the boot screen appears, release your hand to enter Recovery. Enter Recovery Chinese to clear data and clear all data.)
Hello, Mibanda people answer for you.Did you bring a wake-up kit?Is there a problem with the power key?You can contact the customer service but have a look at the after-sales service.
