Please check according to a series of methods:

If the user turns on the mobile phone to retrieve, he can retrieve the password through this function;

2. forcibly restore the factory settings;

3. Forced upgrade.

Huawei has no technical ability to unlock users' passwords; If the following methods cannot be solved, please take the purchase invoice to the service outlets for maintenance. )

if your mobile phone is upgraded from EMUI 3. or EMUI 3.1 to EMUI 4., it cannot be unlocked.

please confirm whether the privacy protection mode has been turned on before. When the privacy mode is turned on, you will have two sets of unlocking passwords. However, after upgrading to EMUI 4., there is no privacy protection mode. You can only use the previously set master password to enter the system, and the guest password has been invalidated.

when setting the pattern to unlock, you will be prompted to set an alternate numeric password.

when you forget to unlock the pattern, you can unlock the screen with an alternate digital password.

if you can't remember the spare digital password, or if you set the digital password before, but you can't unlock it successfully, you can solve it in the following ways:

Method 1. Find my mobile phone (mobile phone retrieval) (EMUI 4.1 and below platforms)

1) Premises: EMUI 4.1 and below platforms, mobile phone startup, mobile phone networking, and mobile phone.

2) enter the login cloud service on the computer.

3) enter the user name and password to enter the cloud service homepage.

4) enter the same password when logging in the cloud service account on the webpage.

5) then select find my phone. At this point, the page jumps to the page of locating the mobile phone. After locating the mobile phone, click Remote Lock. At this point, you need to enter a new screen lock password and click Next. Enter the login password again to confirm the operation, and click Next. Click lock. After the lock is successful, the words "Locked successfully" will appear in the upper right corner of the page. At this time, just use the newly set lock password to unlock the phone.

Method 2. Try to unlock the phone through the safe mode

1. Enter the safe mode, where you can use the correct password to unlock it, then change the screen lock password to a digital password, and then enter the normal mode to use it normally; If you enter normal mode after changing your password, you are still prompted that your password is wrong. It is recommended to back up your personal data in safe mode and restore the factory settings.

2. If the phone still prompts for password error after entering the safe mode, please try to solve it by other methods.

method 3: forcibly restore the factory settings

after restoring the factory settings, the data stored in the mobile phone will be deleted.

when the phone is turned off, without plugging in the USB cable, press and hold the tone key and the power key at the same time until the logo interface is displayed, and select to restore the factory settings.

method 4: upgrade the mobile phone

1. upgrade with microSD card:

step 1: enter official website of EMUI and download the software upgrade package according to the mobile phone model.

step 2: put the dload folder in the upgrade package into the root directory of microSD card.

step 3: in the off state, insert the microSD card.

step 4 press and hold the power button and the volume up and down buttons at the same time until the Android robot icon appears.

The mobile phone enters the upgrade mode and starts to upgrade. After the upgrade, the mobile phone will be restored to the factory settings.

2. Upgrade via external storage device:

Step 1: Enter EMUI official website and download the software upgrade package according to the mobile phone model.

step 2: put the dload folder in the upgrade package into the root directory of the u disk.

step 3: when the phone is turned off, connect the phone with the USBOTG data cable.

step 4: press and hold the power button and the volume up and down buttons at the same time until the Android robot icon appears, and the mobile phone will automatically enter the upgrade mode to start upgrading.