How can I unlock the lephone when the screen is black?

Here's how I worked:

1. Do-it-yourself solution: **Software "Flash Wizard" - Install Software - > Install Mobile Phone Driver - > Open the Driver Wizard, and in the "Utilities" option of the Flash Wizard, you can select "Device Management and Shortcut Tools" - Select "Clear Lock Screen Password Tool" in the Shortcut Tool Options to clear the phone lock screen password;

2. Go to the mobile phone after-sales service hall and provide free warranty during the warranty period. But the premise is that your phone has not been swiped, if it has been swiped, please flash back to the original system.

Hope it solves your problem.

Summary. We can use the flashing method to clear the password.

We can use the flashing method to clear the password.

How to brush? The screen of the phone has become like this.

In this way, it can only be after-sales.

Or a repair shop.

Good. Thank you.

1. First of all, we can only try the shutdown button. Just press and hold the power button for about three seconds to come out of the reboot and shutdown page.

2. Then in the shutdown state, press the volume button and the power button at the same time, after five seconds, the phone will display, release the power button at speed, and the volume button will not be released.

3. Then restore the factory settings.

The page will come out, and this interface should be carefully operated, if you have very important information in your phone, you have to think about the operation.

4. Then the phone will prompt you to enter yes, click to restore factory settings, then all the data on your phone will disappear, so you should deal with it carefully. If you don't have anything on your phone, you can access it. If you have important information, you can save the password on your computer or in a memo.

in、In the book。 Because when setting the password, the system has already reminded everyone that if they forget it, it will not be able to recover it automatically.

1. Long press the power on button and volume + enter the recovery mode to select two wipe cleanups. 3. The buttons of different mobile phones are different, so it's good to test them yourself. After double wipe, the phone information is completely cleaned up, and you need to reinstall the software or something.

If the screen does not turn black when playing **, the distance sensor is faulty, and the distance sensor needs to be calibrated or repaired after sales;

If the screen turns black normally during the call but can't automatically turn off and light up, or the screen turns black immediately after being connected, there are two possibilities. ：

1.The screen film blocks the distance sensor;

2.After the phone bumps the phone many times, there is a gap between the leading distance sensor and the screen window, which will also cause the distance sensor to not be triggered. It is necessary to go to the after-sales service to upgrade and overhaul.

1. The third-party software screen lock password is forgotten: because the startup is not very fast when the machine is booted, the software has not been started at the time when the machine is just started. You can use this to solve the problem of forgetting the password of the mobile phone lock screen, turn off the mobile phone and restart, and use the short time when it has just been turned on to uninstall the third-party frequency lock software on the mobile phone, and our mobile phone will return to normal after uninstalling.

2. Forgot the password of the built-in lock screen software: turn off the phone, press and hold the volume up button (or down button) of the phone at the same time to make the phone enter the flash mode, and then click to clear the phone cache, so that the phone can be used normally if it is restarted again.

Note: All data will be lost after flashing.

1.Enter the official website of iCloud and enter the account and password;

2.After logging in, select Find My iPhone and tap to enter;

3.Find the device you forgot your password and tap to enter;

4.Select the Erase iPhone option, and select Continue in the pop-up confirmation dialog box.

5.Note that this feature will erase all data on your phone, including the passcode.

Android phone forgot password unlock steps:

1.Long press the power button to power off;

2.Press and hold the volume up button + power off button for a few seconds to enter recovery mode;

3.Click on the Clear option to enter, find the formatted data, and click to enter;

4.Enter "yes" and click below to confirm;

5.Note that this feature will erase all data on your phone, including the passcode.