How to backup an Android phone

Spent a few days reinstalling the Android phone system. This article briefly introduces how to backup an Android phone.


General steps for backing up a device:

  1. Clearly define the scope of data to be backed up (determine which data needs to be backed up)
  2. Determine applicable backup methods one by one
  3. Backup
  4. Check the integrity of the backup


When performing backup operations, corresponding permissions are required. In the Android system, permissions are divided into the following three levels based on their priority:

  1. Root superuser permission.
  2. ADB (Android Debug Bridge) permission. It is used for developer debugging. You need to download the Android SDK on your computer and send commands to the phone through the command line.
  3. Application permissions. Android applications are divided into system apps and user apps. System apps have higher permissions than user apps.

Backup Methods#

  1. RECovery backup: Enter recovery mode to backup using the backup function or by copying files. Here, the permissions are higher and can read all files.
  2. Backup by copying files. Copying certain files requires higher permissions.
  3. Backup using Android apps. It can be divided into cloud synchronization and writing to local files.

Scope of Backup#


Includes the application itself and application data.

The application itself refers to the content obtained after the installation package is installed; application data includes but is not limited to application settings, resources downloaded by the application, and user-saved documents.

If the application itself supports backup, it is best. If it does not support backup, higher permissions may be required to copy data files for backup.

For some critical applications, it is necessary to manually confirm the backup status repeatedly:

  • Password storage apps generally provide backup functionality
  • Transfer of communication and social software chat records, risk control platform accounts
  • Apps with two-factor authentication: banks, other payment tools, Google, Microsoft
  • Notes, memos, documents
  • Browser bookmarks, history

Contacts, Messages, Call Logs, Calendar#

The Android system grants software the ability to read and write this type of information. Software can be used for backup.

Sensor Records#

Such as step count. Exporting is usually done through recording software.

System Settings#

Wi-Fi passwords, do not disturb settings, SIM settings, fonts

If the system settings do not support export or cloud synchronization, backup can usually only be done by copying files with higher permissions.


Backup can be done through cloud synchronization or copying files.


Simply copy and paste.

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