Android mobile phone boot password cracking lock

After the Android mobile phone is encrypted with the pattern, if the password is forgotten or the unlock fails for multiple times, Google will automatically lock the device and cannot go to the boot homepage again.

This article aims at this situation and explores a method for cracking and locking. The specific locking environment and operation steps are as follows.

1. Mobile phone locked

After the Android mobile phone is encrypted with the pattern, if the password is forgotten or the unlock fails multiple times (5 + 10 + N errors), such

After multiple failed unlocking attempts, the Google account will automatically lock the mobile phone and the user will not be able to go to the boot home page again. The screen is as follows:

The user is locked. The prompt is as follows:

Account unlock

To unlock, sign in with your Google account

Username (email)

Password

At this time, the mobile phone can only call the emergency number (such as 110, 119, 120, etc.), cannot call other contacts mobile phone number

Ii. Crack mobile phone lock

There are two solutions to the above problems:

A. Refresh the machine (this will cause the phone's memory information to be completely lost, And the sdcard memory information will not be lost)

B. Obtain the password for cracking from the Google account Gmail (slightly complicated)

The general steps are: Delete the password file -- modify the Gmail password -- receive the Google unlock prompt -- enter the Gmail account and new password -- unlock the mobile phone

Refer to my previous blog: HTC G14 unlocking S-off, flashing, and obtaining root permissions

To obtain the password for cracking from the Google account Gmail, follow these steps:

In this example, the environment is cracked:

Mobile: HTC G14

Permission: the root permission of the mobile phone is obtained.

Command: Install the ADB Environment

1. Delete the password file locked by the mobile phone

A. install and configure the ADB command line environment. For detailed configuration methods, refer to my previous blog

Build an eclipse + JDK + SDK Android (Windows) in Windows)

Build Android (Linux) with eclipse + JDK + SDK on Ubuntu)

B. ADB deletes the password file.

1) enter the ADB command line environment (you need to connect your phone to your computer using a data cable)

ADB Shell

2) enter the data directory of the mobile phone system

CD/data/System

3) Delete the password file locked by the mobile phone

RM *. Key

4) restart the mobile phone

Reboot

The steps are as follows:

Note:After deleting the password file on your phone and changing the password of your Gmail account,

After you call an emergency call for 30 seconds, press the Home Key to slide the pattern randomly. At this moment, you can go to the mobile phone homepage and access any files of users on the mobile phone.

If you still cannot unlock your phone at this time, proceed to the following steps ....

2. Modify the Gmail Password

1) log on to your Gmail account

2) Click "account name"> "Account"> "security"> "Change Password" in the upper right corner.

3) change the Gmail password (the new password must be at least 8 characters long)

3. Receive the Google unlock prompt

After modifying the Gmail password in step 2, Google will send a prompt message after a while

Ask the user to re-enter the Gmail account and password (new password after modification)

4. Enter your Gmail account and new password.

Follow Step 2 to change the password of your Gmail account, receive the prompt in step 3, and re-enter the following page to unlock your mobile phone (you need to connect the network to sync with your Google account, in steps 2 and 3, the network can be enabled)

When you connect to and synchronize with Google, you will be prompted that the left side cannot connect to the network information (such as the left side). You can enable multiple network connections several times (such as the right side)

5. Unlock the mobile phone

After performing the above steps, you can use the Google account to completely crack the mobile phone lock.

The mobile phone is locked successfully!

Reference recommendations:

Unlock Android phone after too release pattern attempts

How to unlock Android phone after too release pattern attempts without factory reset

Build an eclipse + JDK + SDK Android (Windows) in Windows)

Build Android (Linux) with eclipse + JDK + SDK on Ubuntu)

HTC G14 unlocks S-off, fl, and obtains root permissions

It-Homer Column