Clearing memory on ZTE Android smartphones: from cache to factory settings

Smartphones ZTE —whether they are budget series models Blade or flagship ones Nubia —over time they begin to slow down due to full memory. Even 64 or 128 GB of internal storage can quickly fill up with photos, app cache, and system junk. Unlike devices Samsung or Xiaomi, smartphones ZTE often have their own shell MiFavor (on older models) or close to stock Android, which affects cleaning methods.

This article will help you figure out how to effectively free up space on ZTE without the risk of losing important data. We will look at both standard methods (clearing the cache, removing duplicates) and specific techniques for devices with a small amount of memory (32 GB or less). We will pay special attention to models ZTE Blade A7, Nubia Red Magic and other popular lines, where users often face a lack of space due to aggressive caching of games and social networks.

1. Diagnostics: what is taking up memory on your ZTE?

Before you start cleaning, you need to understand which files are eating up precious gigabytes. On smartphones ZTE the path to analyzing the storage depends on the version Android and shell:

• 📊 Android 10-13 (MiFavor/Nubia UI): Settings → Device memory → Storage analysis. Here the system will show the distribution by category: “Applications”, “Media”, “System files”, etc.
• 🔍 Android 8-9 (older models): Settings → Storage and USB drives. You may need to tap "Internal memory" for details.
• ⚙️ Hidden files: Use a file manager (for example, Files by Google) with the "Show hidden files" option - often garbage is hidden in folders .thumbnails or .cache.

Pay attention to the "System data" section - if it takes up more than 10-15 GB, this is a sign of an accumulated cache of updates or logs. On some models ZTE (for example, Blade V40), this garbage is not cleared by standard means and requires manual intervention.

⚠️ Attention: If in the "Memory" section you see the "Other" item with a volume of 5+ GB, do not try to delete these files manually through Root-access. This may be critical data for the operation of the shell. applications MiFavor or Nubia UI.

File type	Is it safe to delete?	How to clean
Application cache	Yes	Through the settings of each application or Settings → Memory → Cache
Downloads (folder Download)	Yes (check important files)	File manager or Files by Google
Duplicates of photos/videos	Yes	Applications like Duplicate Files Fixer
Logs and dumps (.log, .dmp)	Yes (if you are not debugging the device)	Manual search in /sdcard/log or through SD Maid
APK files of remaining installations	Yes	Folder /sdcard/Download or /sdcard/APK

2. cache: why does it work differently on ZTE

The application cache is the main "eater" of memory on ZTE. Unlike Samsung or Google Pixel, where the cache is cleared automatically when there is not enough space, on ZTE it can accumulate for years. This is especially noticeable on models with MiFavor UI (for example, Blade A5 or Blade L8), where the cache of social networks and instant messengers takes up to 3-5 GB.

Standard cleaning method:

1. Open Settings → Applications.
2. Tap on the three dots in the upper right corner and select "Sort by size."
3. Open each major application (for example, Facebook, Telegram, Google Play Services) and click "Clear cache."

On smartphones Nubia (for example, Red Magic 6) there is an additional option: Settings → Advanced → Clear memory. Here you can delete the cache of all applications at once, but This method does not work on devices with an unlocked bootloader - it may cause the shell to crash.

Back up important data|Close all background applications|Connect the charger (the process may take 10-15 minutes)|Check the free space after cleaning-->

⚠️ Attention: Do not clear the system application cache like com.android.systemui or com.zte.launcher —this can lead to interface failure. On models ZTE with Android 11+ after such cleaning, the wallpaper and lock screen settings often disappear.

3. Removing unnecessary applications and "bloatware"

ZTE, like many Chinese manufacturers, likes to pre-install unnecessary applications (bloatware). On models Blade this can be duplicate browsers, games from partners or services like ZTE Carethat cannot be removed using standard means. fight them:

• 🗑️ Disable (without Root): Go to Settings → Applications, select an unnecessary application (for example, Game Center) and click "Disable". This will not remove it completely, but will free up some memory and stop background activity.
• 🔧 Uninstall via ADB (for advanced): Connect your phone to the PC, activate USB debugging and run the command:

  adb shell pm uninstall -k --user 0 com.zte.gamecenter

  A complete list of packages for removal can be found on forums like XDA Developers (look for a topic based on your model ZTE).

• 📦 Applications for debloata: Universal Android Debloater (works without Root on Android 10+) or LADB for models with Android 8-9.

On Nubia the situation is more complicated - many system applications are associated with proprietary functions like Red Magic OS. For example, deleting Nubia Game Space can disrupt the operation of the game mode. Before deleting, check whether key functionality is dependent on the application.

Social networks (Facebook, TikTok)|Games (Game Center, Gameloft)|ZTE services (ZTE Care, My ZTE)|Other browsers (Chrome Duplex, UC Browser)|Nothing gets in the way-->

4 Optimization of media files: photos, videos and music

Media files are the second largest "eater" of memory after the cache. On ZTE with 48+ MP cameras (for example, Nubia Z30 Pro or Blade V30) one photo in format RAW can weigh 50-80 MB. Here's how to reduce their size:

• 📸 Photo compression: Use Google Photos ("High quality" setting instead of "Original") or Simple Gallery with the batch compression function.
• 🎥 Video conversion: Applications like Video Compress will reduce the size of videos without critical loss of quality. For example, video 1080p can be compressed to 720p saving up to 60% of space.
• 🔄 Automatic cleaning: Turn on the "Free up space" function - it will delete local copies of photos already uploaded to the cloud. Google Photos enable the "Free up space" function - it will delete local copies of photos already uploaded to the cloud.
• 🗃️ Transfer to SD card: On models with support MicroSD (for example, Blade A71), transfer the media to Settings → Memory → Transfer data to SD card.

Pay attention to the folder DCIM/.thumbnails —photo thumbnails are stored here, which can take up to 1-2 GB. They can be safely deleted, but they will be restored the next time you view the gallery. To avoid this, use alternative galleries like QuickPic.

5. Reset to factory settings: when necessary

If after all manipulation of free space is less than 10% of the total volume, and the system is slow, it’s time to consider hard reset. On ZTE this process has nuances:

• ⚙️ Standard reset: Settings → System → Reset settings → Delete all data. On some models (Blade A3, Blade V7) the path may differ: Settings → Recovery and reset.
• 🔄 Reset via Recovery: Turn off the phone, hold Volume up + Power until the logo appears ZTE. In the recovery menu, select Wipe data/factory reset (control - volume buttons, confirmation - power button).
• 📱 After the reset: Do not restore data from a backup copy immediately - first check how much space the “clean” system takes up. On some ZTE (for example, Nubia Red Magic 5G), the factory firmware weighs up to 12-15 GB.

Before resetting, be sure to:

1. Save your contacts to Google Account or export them to a file .vcf.
2. Copy photos and videos to a PC or to the cloud.
3. Write down logins/passwords for applications (for example, for WhatsApp or banking applications).

⚠️ Attention: On devices ZTE with Android 8 and below after a reset, you may need to re-activate via Google Accountlinked to the phone previously. If you do not remember your account details, the smartphone will be blocked (protection FRP).

What to do if after a reset the memory becomes full again?

If after hard reset memory runs out quickly, the problem may be:

1) Damaged file system - flashing required via SP Flash Tool or QFil.

2) Hidden partitions (for example, /cache or /data/log), which are not cleared when resetting. To delete them, you need Rootaccess.

3) Virusesthat create junk files. Check your phone through Malwarebytes after reset.

6. Advanced methods: Root, ADB and custom firmware

If standard methods do not help, and there is less than 5 GB of free space left on the phone, it’s time to consider radical measures. They are suitable for users who are willing to take risks. system stability for the sake of additional gigabytes.

• 🛠️ Root access: Allows you to delete system applications, clean folders /data/log and /cache, and also use tools like SD Maid for deep cleaning On ZTE unlocking. The bootloader often requires official permission through the website ZTE (the procedure can take up to 7 days).
• 🔧 ADB commands for cleaning:

  adb shell pm clear com.android.providers.media # Cleaning media cache
  adb shell rm -rf /data/local/tmp/* # Deleting temporary files

• 📱 Custom firmware: Firmwares like LineageOS or HavocOS are devoid of bloat and are optimized for a small amount of memory. However. for ZTE the choice of firmware is limited - active development is carried out only for popular models (Nubia Red Magic 3/5G, Blade V30).

On models with Nubia UI (for example, Red Magic 6S Pro) after receipt Root you can disable unnecessary system services via Titanium Backup or Lucky Patcher, which will free up an additional 2-3 GB.

⚠️ Attention: On smartphones ZTE with processors Qualcomm (for example, Blade 20 or Nubia Z20) incorrect use of ADB or Root can lead to hard brick (impossibility of turning on). Before experiments, check the availability of official firmware for your model. website ZTE.

7. Prevention: how to avoid filling up memory in the future

In order not to return to cleaning every few months, set ZTE to automatically maintain order:

• 📈 Cache limit: B Developer Options (Settings → About phone → 7 taps on "Build number") set the background process limit to "Maximum 2 processes".
• 🚫 Block startup: B Settings → Applications → Autostart Disable autostart for unnecessary applications (especially games and social networks).
• 🔄 Regular cleaning: Set up a weekly reminder in Google Calendar to check memory via Files by Google.
• ☁️ Cloud backups: Automatically upload photos to Google Photos or Yandex Disk and delete local copies older 30 days.

Devices with Nubia UI have a built-in Smart Cleanup function (Settings → Advanced → Smart cleaning), which deletes unnecessary files when connected to Wi-Fi. Activate it and add only critical applications to exceptions.

FAQ: Frequently asked questions about clearing memory on ZTE

Is it possible to transfer applications to an SD card on a ZTE Blade? A7?

On ZTE Blade A7 (and most models with Android 9+), transferring applications to SD card is limited. data-i="280">-access and application like Root-access and application like App2SD.

Exception - models with support Adoptable Storage (for example, ZTE Axon 7 on Android 6-7In this case, the SD card is formatted as internal memory, but). this reduces its speed and reliability.

Why does the memory fill up again within a day after clearing the cache?

This is a typical problem for ZTE with a small amount of memory (16-32 GB) Reasons:

1. Aggressive caching shells. data-i="290">or MiFavor or Nubia UI.
2. Background activity pre-installed applications (for example, ZTE Care or Game Center).
3. Logs and dumpsthat the system creates when failures.

Solution: disable autorun of unnecessary applications, set a limit of background processes in Developer Options and regularly check the folder /data/log via a file manager with Root-access.

How to clear memory on ZTE Nubia Red Magic without losing game data?

On gaming smartphones Nubia Red Magic games occupy the main place (for example, Genshin Impact or Call of Duty Mobile). free up space:

1. Move games to MicroSD (if supported) via Settings → Memory → Data transfer.
2. Clear game cache manually: Settings → Applications → [Game] → Memory → Clear cache.
3. Use Google Play Games to save progress to the cloud before deleting the game.
4. For Red Magic 3/5G and newer: activate the "Game Space" function (Nubia Game Space) and enable the "Memory optimization" option in its settings.

Do not delete the folder Android/obb manually - this will cause the games to crash. Instead, uninstall the game via Google Playand then install it again, selecting SD card as the installation location.

What to do if there is not enough space on the ZTE Blade V30 to update the system?

Updates Android on ZTE require up to 3-5 GB of free space. If you don’t have it:

1. Connect your phone to your PC and copy media files to your computer.
2. Uninstall large applications (games, social networks) through Settings → Applications.
3. Clear the folder Download and cache Google Play Services.
4. If all else fails, download the update to your PC from the official website ZTE and install it via Recovery (instructions are in the "Reset to factory settings" section).

On Blade V30 you can also use the "Clean before updating" function in Settings → System → System update.

How to find out which files take up the most space on my ZTE?

Methods analysis:

• Built-in tools: Settings → Memory → Storage analysis (shows categories, but not specific files).
• File managers: Files by Google (section "Cleaning"), Solid Explorer (mode "Memory analysis").
• Specialized applications: DiskUsage or Storage Analyzer —show large files and folders in the form of a diagram.
• ADB command for advanced:

  adb shell du -h -d 1 /sdcard | sort -h

  Sorts folders by SD card by size.

On ZTE s Android 11+ some system files may not be displayed in the analysis - to view them you need Rootaccess.