How to delete a backup from Android: step-by-step guide

Owners of mobile devices are often faced with a situation where the space in cloud storage or on the internal memory of the smartphone is critically limited. One of the largest categories of data, occupying gigabytes, are old system and application backups. Over time, such archives accumulate, especially if the user often changes devices or reinstalls the operating system. Deleting a backup becomes a necessity not only to save space, but also to maintain digital hygiene, since storing outdated data increases the risk of information leakage when an account is hacked.

The cleaning process may seem confusing due to the variety of versions Android and interfaces of shells from different manufacturers, such as Samsung One UI or Xiaomi MIUI. However, the basic principles of working with backups remain the same throughout the entire ecosystem. In this article, we will look in detail at how to find and erase unnecessary duplicate data using built-in tools, file managers and third-party services. You'll learn to differentiate between local and cloud copies so you don't accidentally lose important contacts or photos. Google, file managers and third-party services. You'll learn to differentiate between local and cloud copies so you don't accidentally lose important contacts or photos.

Before you take drastic action, you need to understand where exactly your data is stored. Many users mistakenly believe that deleting an application automatically erases its backup, but this is not true. Synchronization often happens in the background and files can remain on servers for months. We will look at safe action algorithms that guarantee complete release of space without disrupting the operation of the current system.

Managing backups via Google Account

The main storage for most users is the cloud Google Drive, integrated directly into the operating system. To delete outdated data, you need to go to the settings of the smartphone itself. Go to section Settings → Google → Backup. Here you will see a list of all devices linked to your account for which archives were created. This is the most reliable way to manage data, as it eliminates file system errors.

In the list of devices you will see the name of your current smartphone, as well as models of old phones that you used previously. Click on the name of the device whose data you want to erase. The system will show detailed information about what exactly is saved: the list of applications, call history, SMS messages and device settings. If you see a device that you no longer use, you can safely delete its copy.

⚠️ Attention: Deleting a backup copy from your Google Account is irreversible. After confirming the action, it will be impossible to restore the settings and list of applications for this device. Make sure you no longer need the data.

To clear, click the button Delete backup or the trash can icon in the upper right corner of the screen. The system will ask you to confirm again to prevent accidental clicking. After the process is completed, space in your Google Drive will be freed up instantly. Please note that this action does not affect the data on the phone itself, but only deletes the copy in the cloud.

Cleaning local backups in the internal memory

In addition to cloud services, many smartphone manufacturers create local copies of the system directly in the internal memory of the device. Such files often have the extension .bak or are located in hidden system folders. They take up a significant amount of space, sometimes reaching several gigabytes, and are not automatically synchronized with the cloud. You can find them using any advanced file manager, for example Files by Google or Solid Explorer.

You need to go to the root directory of the internal storage and pay attention to the folders with the names backup, MIUI (for Xiaomi), HWBackup (for Huawei) or b2. Inside these directories, complete system images taken before the firmware update can be stored. If your phone is stable and you do not plan to roll back to an older version of the software, these files can be deleted without fear.

To delete, select the desired files or entire folders and click the delete button. The system may ask for superuser rights or confirmation to delete system files. Local storage will be cleared immediately after confirmation. It is also recommended to check the folder Download, since users often download manual backups there through third-party utilities.

You should remember that some files can be protected from deletion by standard means. In this case, you may need to connect your smartphone to your computer in file transfer mode MTP. Through Explorer Windows or macOS file management is often more flexible than on the device itself. This is especially true for older models with a small amount of built-in memory.

Deleting data from Google Photos and other clouds

Media files, which are often confused with system backups, deserve special attention. The service Google Photos automatically creates copies of all images and videos, uploading them to the cloud. Although technically this is not a full system backup, this data takes up the lion's share of the storage quota. They are managed through a separate application or web interface.

To free up space, open the application Google Photos and go to your account settings. There you will find the item Storage management. The system will offer.review large videos, blurry pictures and screenshots. You can select files and delete them. It is important to understand the difference between deleting from the cloud and deleting from the device. When you delete a photo from the Google Photos cloud, it will also disappear from the device if synchronization is enabled.

Data type	Where stored	How to delete	Impact on phone
System settings	Google Drive	Through Google settings	No (cloud only)
Photos and videos	Google Photos	In the Photos application	Deleted everywhere during synchronization
System image	Internal memory	File manager	No (frees up space)
Contact	Google Contacts	Contacts web interface	Deletion is synchronized

Users also often use third-party cloud services such as Yandex.Disk, Dropbox or OneDrive. The principle of deletion there is similar: you need to go into the application, find the section with automatic photo uploading and clear it. Don't forget to check the trash inside these applications, as files are often stored there for another 30 days after deletion, continuing to take up space.

Resetting application settings and clearing the cache

Sometimes users apply the concept of “backup” to data from specific applications that swell over time. Messengers like WhatsApp or Telegram create their own local databases of messages and media files. This data does not always end up in Google’s general backup, but is critical for the operation of apps. You need to manage them inside the applications themselves.

In the settings WhatsApp section Chats → Chat backup allows you to see the date of the last save in Google Drive and the size of the local copy. You can click Delete backupto erase data from the cloud. To clean up local files, you will have to use the file manager and go to the folder Android/media/com.whatsapp or similar for your OS version.

⚠️ Attention: Messenger interfaces are updated frequently. Menu items may move or change names. If you do not find the delete button, check the help for the specific application.

In addition, it is worth clearing the application cache, which is sometimes mistaken for backup data. Go to Settings → Applications, select a heavy application and press Storage. Button Clear cache is safe and will not delete your logins or correspondence, but will free up temporary files that can take up hundreds of megabytes.

What is the .thumbnails folder?

This is a hidden system folder where Android stores thumbnails of all your photos and videos for quick loading in the gallery. Over time, it can grow to several gigabytes. It can be safely deleted through the file manager with hidden files displayed, but it will be created again over time.

Using ADB for advanced cleaning

For experienced users who are not afraid of the command line, there is a tool Android Debug Bridge (ADB). It allows you to manage files and settings at a deep level, bypassing some of the limitations of the GUI. This method is especially useful when standard settings do not allow you to delete frozen or damaged backups.

First you need to enable USB debugging in the menu For Developers. Connect your phone to your computer and open a terminal. To view the list of backups associated with your account, you can use the package commands bmgr (Backup Manager). Enter the list command:

adb shell bmgr list sets

This command will list the dataset IDs (tokens) available for your device. To delete a specific set, use the command specifying the token. Be extremely careful, as working through ADB gives high privileges. An error in the syntax can lead to unpredictable system behavior.

Also, through ADB, you can forcefully clear the data of specific Google services responsible for backup if they do not work correctly. The command adb shell pm clear com.android.localtransport will clear the local backup transport. This can help if the process of creating a copy is frozen and blocks deletion through the settings.

Prevention and setting up automatic copying

After successfully cleaning up excess garbage, it is important to configure the system so that the problem does not return in the future with the same severity. Proper adjustment of synchronization parameters will help control the amount of space occupied. It is recommended to review the list of applications that are allowed to make backup copies.

In the menu Settings → Google → Backup you can manually disable saving data for those apps that are not valuable. For example, games in which progress is stored on the developer’s servers, or cached news applications do not need backup. Disabling these items will significantly reduce the size of the archive.

• 📱 Disable backup for games and entertainment applications.
• ☁️ Regularly check your Google Drive quota once every quarter.
• 🗑️ Set up automatic emptying of the recycle bin in cloud services (14 or 30 days).
• 📸 Use photo compression in Google Photos to save space.

It is also worth considering using external media. Periodically transferring photos and videos to a computer or external hard drive will keep the cloud clean for really important system settings. Automation cleaning processes through the built-in Device Care tools on Samsung or Xiaomi smartphones also helps maintain order without manual intervention.

Why backup takes so much places?

Most often the volume is inflated due to video files from instant messengers and duplicate photos. System settings and contacts take up negligible space (kilobytes), while media can weigh gigabytes.

Is it possible to restore a deleted backup through Google support?

Unfortunately, Google support does not restore user-deleted backups. The cloud deletion process is considered a final action and is confirmed twice. The only chance is if you have a local copy on your computer or other device.

Will the backup be deleted if I delete the Google Drive application from the phone?

No, deleting the Google Drive application from the smartphone does not affect the data stored in the cloud account. Your backups will remain on Google servers and will be available when you log into your account from another device or through the web interface.

How can you learn how much space a backup of a specific application takes up?

Go to Google settings on your phone, select the "Backup" section and click on the name of your device. In the list that opens, there will be details for each application indicating the occupied space in megabytes or gigabytes.

Does deleting a backup affect the smartphone warranty?

Deleting software backups of user data does not in any way affect the manufacturer's warranty. This is a standard operation provided by the functionality of the Android operating system.

What to do if the "Delete backup" button is inactive?

Check your Internet connection and account login status. Sometimes the problem is solved by clearing the Google Play Services cache in the application settings. If the problem persists, try performing the action through the web version of Google Drive from your computer.