Are you trying to open a document, video or archive on your smartphone, but instead of the content you see an annoying notification: "This file format is not supported"? The problem is familiar to millions of Android users - even on flagship devices like Samsung Galaxy S24 or Google Pixel 8 sometimes it is not possible to read files that can be easily opened on a PC. What is the reason and how to eliminate it without losing data?

The error does not occur due to “crooked hands” - the operating system features are to blame. Android by default supports a limited set of formats (for example, for video, for images, for documents), and the rest require additional codecs or specialized applications. Sometimes the problem lies deeper: a damaged file, outdated firmware, or even manufacturer limitations (like without Google services). In this article - .mp4 for video, .jpg for images, .pdf for documents), while the rest require additional codecs or specialized applications. Sometimes the problem lies deeper: a damaged file, outdated firmware, or even manufacturer limitations (like Huawei without Google services). In this article - 7 proven methods, from simple to advanced, taking into account the nuances of different versions of Android (from Android 10 to Android 15).

1. Check the integrity of the file and its extension

Before looking for complex solutions, make sure that the file is not damaged and its extension matches the content. Often users encounter an error due to:

  • 🔹 Incorrect extension (for example, the video .mkv was renamed to .mp4, but the codec remained the same).
  • 🔹 Incomplete download —the file was “cut off” when downloading via mobile data.
  • 🔹 Viruses or bad sectors (relevant for files from flash drives or torrents).

How to check?

  1. Open any file manager (for example, Files by Google or Total Commander).
  2. Find the problematic file, click on it and hold your finger → select Properties or Information.
  3. Compare file size with the expected one (for example, a Full HD movie cannot weigh 50 MB).
  4. Try to rename the extension (only if you are sure of the format!). data-i="67">on .docx on .doc.
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If the file was downloaded from Telegram or VKontakte, try sending it to yourself again - sometimes social networks “damage” formats when compressed.

If the file size is suspiciously small or the extension does not match the type (for example, music in format .exe), most likely it is damaged. In this case, only re-downloading or restoring from a backup will help.

2. Install a specialized application

Android does not support many formats out of the box, but this can be easily fixed using third-party apps. Below - list of tested applications for different file types:

File type Formats Application Link (Play Market)
Video .mkv, .flv, .avi, .mov VLC or MX Player vlc, mxplayer
Audio .flac, .ape, .wav, .ogg Poweramp or Neutron poweramp, neutron
Documents .djvu, .xps, .epub Foxit PDF or LibreOffice Viewer foxit, libreoffice
Archives .rar, .7z, .tar.gz ZArchiver or RAR zarchiver, rar
Images .heic, .raw, .psd Google Photos or Snapseed googlephotos, snapseed

Important: some applications (for example, MX Player) require additional codecs. After installation, open the app, go to Settings → Decoder and download the missing packages.

📊 What files most often do not open on your Android?
Video
Documents
Archives
Images
Other

Warning for Huawei/Honor owners: On devices without Google Play Services, some applications (for example, VLC) may be unstable. In this case, use alternative stores like APKMirror or AppGallery.

3. Convert the file to a supported format

If installing applications did not help or you do not want to download unnecessary apps, conversion is a reliable way. Both online services and offline utilities are suitable for this.

Online converters (for small files):

  • 🌐 CloudConvert - supports 200+ formats, including .heic → .jpg.
  • 🌐 Online-Convert - convenient for audio and video (you can change bitrate).
  • 🌐 Zamzar —sends the result by email, suitable for documents.

Offline utilities (for large files):

  • 📱 File Converter (Android)—converts directly on your phone without the Internet.
  • 💻 HandBrake (PC)—for video with quality settings.
  • 💻 Audacity (PC) - for audio with editing capabilities.
How to convert HEIC to JPG on Android without a PC?

1. Install HEIC to JPG Converter from Play Market.

2. Select files in the gallery.

3. Click Convert and wait for completion.

4. New .jpg will be saved in the folder Pictures/HEIC_Converted.

⚠️ Attention: when converting video or audio to lossy formats (for example, .mp3 from .flac), the quality will deteriorate. For critical files (for example, projects .psd), it is better to use specialized apps like Adobe Photoshop Express.

4. Update Android firmware and codes

If your device has not been updated for a long time, the cause of the error may lie in outdated system codecs. Manufacturers regularly add support for new formats through software updates.

How to check and update the firmware:

  1. Open Settings → System → System update.
  2. Click Check for updates.
  3. If a new version is available, download and install it (make sure the battery charge is >50%).

For devices Samsung, Xiaomi i OnePlus additional codec packages are also available additional codec packs:

  • 📱 On Samsung: go to Galaxy Store and find Samsung Codec Pack.
  • 📱 On Xiaomi: check for updates in Settings → About phone → MIUI update.
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The firmware update not only adds support for new formats, but also corrects file reading errors (for example, a bug with .mkv in Android 12).

⚠️ Attention: on custom firmware (for example, LineageOS) may not support proprietary formats like .aac+. In this case, only installing official software or manually flashing codecs via TWRP.

5 will help. Use cloud services for viewing

If the file does not open locally, but you urgently need to view its contents, cloud services will be a salvation. They process files on their servers and display the result in the browser.

The best services for different types of files:

Instructions for Google Drive:

  1. Upload the file to Google Drive via a browser or application.
  2. Right-click on the file (on a PC) or hold your finger (on a phone).
  3. Select Open with → Google Docs/Sheets/Slides.

⚠️ Attention: Do not upload confidential files to the cloud (for example, scans of passports or bank statements. For them, it is better to use offline apps or). encrypted archives (.zip with a password).

6. Check the security settings and access rights

Sometimes Android blocks opening files due to security restrictions, especially if they were downloaded from unknown sources or located in protected folders (for example, /system or /data).

What to check:

  • 🔒 Permission to install from unknown sources: Settings → Applications → Special access → Install unknown applications.
  • 🔒 File manager rights: give Total Commander or FX File Explorer access to the storage.
  • 🔒 Antivirus: Some (for example, Dr.Web) block “suspicious” formats like .bat or .js.

For files in protected folders (for example, Android/data):

  1. Connect the phone to the PC via USB cable (select mode File transfer).
  2. Copy the file to an accessible folder (for example, Download).
  3. Try opening it on your phone or PC.

Make sure the file is downloaded from a reliable source

Check the extension to match the content

Open the file in a sandbox (for example, via Google Drive)

Update your antivirus before running executable files

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⚠️ Attention: If the file is on SD cardformatted as internal memory, some applications may not see it. Move the file to internal storage or format the card as portable device (V Settings → Storage).

7. Advanced methods: ADB and manual installation of codecs

If none of the methods worked, there are technical solutions -they require administrator rights or connection to a PC, but are guaranteed to solve the problem.

Method 1: Installing codecs via ADB

For pure Android devices (for example, Google Pixel or Nokia):

  1. Install ADB Tools on PC.
  2. Connect your phone via USB and enable debugging (Settings → For developers → USB debugging).
  3. Run command: 
    adb shell pm install -r --abi armeabi-v7a /path/to/codec.apk

    (replace the path with the current codec package, for example, MX Player Codec).

Method 2: Manually adding MIME types

For experienced users with root-rights:

  1. Open file /system/etc/mime.types in a text editor (for example, Root Explorer).
  2. Add a line for your format, for example: 
    video/x-mkv      mkv
  3. Save the file and reboot the device.

1. Use Magisk instead of the outdated one SuperSU.

2. Create a backup via TWRP before flashing the firmware.

3. Check compatibility with your model on XDA Developers.

4. After receiving root, disable automatic security check in Google Pay and bank accounts. applications.

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⚠️ Attention: Incorrect editing of system files can lead to bootloop (loop loading). If you are not sure of your actions, contact a specialist.

FAQ: Frequently asked questions about unsupported ones. formats

Why doesn't Android open .heic files from iPhone?

.heic is a proprietary Apple format that Android does not support by default Solutions:

  • 📱 Install HEIF Image Viewer from the Play Market.
  • 🖥️ Convert files on iPhone to .jpg via Settings → Camera → Formats.
  • 🌐 Use an online converter heictojpg.com.
Can I open .iso or .dmg on Android?

Disk image formats (.iso, .dmg) are not intended for mobile devices, but there are workarounds:

  • 📱 Application ISO Viewer —shows the content .iso.
  • 🖥️ Extract the files on your PC and transfer them to your phone.
  • 💻 For .dmg use dmg2img on macOS/Linux, then convert to .iso.
Android says “The file is damaged” when opening the archive. What to do?

Causes and solutions:

  • 🔹 Incomplete download: repeat the download, check the hash sum (MD5).
  • 🔹 Password for the archive: use ZArchiver with the "Extract" option with a password."
  • 🔹 Multi-volume archive: make sure that all parts (for example, .r01, .r02) are in one folder.

If the archive still does not open, try restoring it via WinRAR on PC (option Recover).

How to open .psd files (Photoshop) on Android?

For working with .psd suitable:

  • 📱 Adobe Photoshop Express — viewing and basic editing.
  • 📱 Photopea (web version) - a full-fledged analogue of Photoshop in the browser.
  • 💻 Export layers to .png on a PC and transfer to your phone.

⚠️ Please note: the phone will not be able to work with complex projects (many layers, smart objects).

Why did old files stop opening after the Android update?

Probable reasons:

  • 🔄 Changes in codecs: for example, in Android 13 they deleted support .3gp.
  • 🔒 Security policy: new versions block executable files in the folder Download.
  • 📱 Reset settings: file associations may have been reset after the update.

Solution: update the applications that opened these files, or use alternative apps (see section 2).