Losing important files on a smartphone is a situation familiar to many. Vacation photos, work documents, correspondence, or contacts may disappear after a factory reset, accidental deletion, or system crash. Fortunately, data recovery on Android is possible even without special skills, the main thing is to act quickly and choose the right method.

In this article we will examine 5 working methods getting back deleted data: from standard Google tools to professional utilities with root access. You will learn how to recover photos, videos, WhatsApp messages, contacts and even application data. And at the end - a checklist of preventive measures to minimize the risks of information loss in the future.

Important: the effectiveness of recovery depends on time after deletion and type of files. The sooner you start acting, the higher the chances of success. If the data was deleted a long time ago or new files were written over it, it will be more difficult to get it back.

1. Restoring through Google backups

The most reliable way to get data back is to use automatic backupsthat Android creates in the background. If synchronization with your Google account is enabled on your device, there is a high probability that some of the files are already saved in the cloud.

What can be restored via Google:

  • 📱 Contact — are synchronized automatically if the option is enabled in the account settings.
  • 📅 Calendar and notes — are saved in Google Calendar and Google Keep.
  • 📎 Photos and videos is enabled —if the function Backup and synchronization to Google Photos.
  • 💬 SMS messages —only if archiving via Google Drive was previously configured (not available on all devices).

How to restore data from a backup:

  1. Open Settings → Google → Backup.
  2. Check if there are current copies (the date of the last save is displayed at the top of the screen).
  3. To restore contacts: go to Google Contacts (web version) → More → Cancel changes → select a date.
  4. For photos: open Google Photos, find the folder Trash (files are stored there for 60 days) or check Archive.
⚠️ Attention: If you reset your phone to factory settings, the backup can only be applied to during the initial setup devices. After the process is completed, recovery via Google Drive will no longer be available.
📊 Do you regularly check backups on Android?
Yes, once a month
Only before resetting the settings
Never checked
I don’t know how to do this

2. Recovery apps without root access

If there are no backups or they are outdated, specialized utilities will come to the rescue. Without superuser rights (root) such apps scan the cache and temporary files, but their capabilities are limited. They cope best with recovery:

  • 📸 Photos and videos (formats .jpg, .png, .mp4).
  • 📄 Documents (.pdf, .docx, .xlsx).
  • 🎵 Audio files (.mp3, .m4a).

Top 3 apps for Android without root:

app Free version Pros Cons
DiskDigger Yes (with limitations) Simple interface, supports many formats Does not restore messages and contacts
EaseUS MobiSaver No (3-day trial) Deep scanning, file preview Requires connection to PC
GT Recovery Yes (with advertising) Recovers WhatsApp and SMS Many false positives

Instructions for use DiskDigger:

  1. Download the application from Google Play (or from the official website, if it has been removed from the store).
  2. Run and select the scan type: Basic (fast, for recently deleted files) or Full (deep, takes longer).
  3. Wait for the analysis to complete. Check the boxes for the files you want to return.
  4. Click Restore and select the folder to save (for example, cloud or memory card).
⚠️ Attention: Do not save recovered files to the same memory partition from which they were deleted! This may overwrite the remaining pieces of data and make further recovery impossible.

Turn off Wi-Fi and mobile data (to avoid overwriting files)

Charge the phone to at least 50%

Free up space on the memory card (if restore there)

Do not install new applications until the process is completed -->

3. Recovery with root access: maximum possibilities

If your device has superuser rights (root), the chances of successful data recovery increase significantly. Root access allows apps to scan all memory partitionsincluding system ones, where fragments of deleted files may remain.

The best utilities for root devices:

  • 🛠️ Undeleter Recover Files & Data —recovers even fragmented files.
  • 🔍 Hexamob Recovery —supports more than 200 formats, including application databases.
  • 📱 Dr.Fone (root version) —a professional tool with high scanning speed.

Step-by-step guide for Undeleter:

  1. Install the application and provide root access when prompted.
  2. Select the partition to scan (for example, /data for user files or /sdcard for a memory card).
  3. Run Deep scan (may take from 30 minutes to several hours).
  4. After analysis, filter the results by file type (for example, only .jpg).
  5. Select the files you need and click Recover. Save them to your PC or cloud.

Root access allows you to recover even data from applications, such as call history, Viber messages or game saves. However, be careful: incorrect actions with superuser rights can lead to loss of warranty or system damage.

What to do if root access is revoked after an update?

If After updating Android, superuser rights disappeared, try:

1. Re-get root via Magisk or SuperSU (if the firmware is supported).

2. Use TWRP Recovery to create a backup partition /data and restore files manually.

3. If all else fails, return to the non-root methods (Section 2 of this article).

4. Recovering messages from WhatsApp and other instant messengers

Correspondence in instant messengers often contains important information that is difficult to recover using standard methods. Fortunately, WhatsApp, Viber and Telegram offer built-in backup mechanisms.

For WhatsApp:

  • 🔄 Automatic backup to Google Drive (configured in Settings → Chat → Backup).
  • 📁 Local copy in folder /sdcard/WhatsApp/Databases (files with extension .crypt14).

How to restore WhatsApp chats:

  1. Delete and reinstall the application.
  2. When you first start, the system will offer to restore history from Google Drive or a local backup.
  3. If the local backup is damaged, use the utility WhatsApp Viewer to extract messages from a file msgstore.db.crypt14.

For Viber and Telegram:

  • 📲 Viber synchronizes history with your account (available in Settings → Account → Viber backup).
  • ☁️ Telegram stores all messages in the cloud - just log in to your account on a new device.
⚠️ Attention: If you Deleted WhatsApp account before creating a backup copy, it will be impossible to restore the correspondence. Local backups are stored only for 7 days after uninstalling the application.
💡

Before reinstalling WhatsApp, check the date of the last backup in the folder /sdcard/WhatsApp/Databases. The file with the most recent date is your backup. Copy it to your PC to avoid loss.

5. Restoring data after resetting to factory settings

Resetting the phone to factory settings (Hard Reset) is a radical method that erases all user data. However, even in this case some of the files can be returnedif you act promptly.

What to do immediately after the reset:

  1. Do not add a new Google account and do not set up your phone - this may overwrite the deleted data.
  2. Connect your device to your PC and use apps like Recuva (for Windows) or PhotoRec (cross-platform).
  3. Scan internal memory (not an SD card!) in Deep analysis.

If the reset was performed a long time ago:

  • 🔧 Try chip-off method (removing the memory chip and reading through the programmer). This is expensive, but effective for critical data.
  • 💽 Contact a data recovery laboratory (for example, ACE Data Recovery or Kroll Ontrack).

After a factory reset data cannot be restored through standard Google backupsif they were not created till perform a Hard Reset. The only chance is a low-level memory scan.

6. Prevention: how to avoid data loss in the future

The best way to combat data loss is regular backups. Follow these rules to minimize risks:

  • ☁️ Cloud services: Set up automatic synchronization with Google Drive, Dropbox or Yandex Drive. Ideal for photos Google Photos with unlimited storage (for compressed files).
  • 📱 Local copies: Once a month, save important files to your PC or external drive. Use ADB Pull to backup folders like /sdcard/DCIM or /sdcard/Downloads:
adb pull /sdcard/DCIM C:\Backup\Photos
  • 🔄 Backup applications: Install Swift Backup (for root) or Titanium Backup (to backup applications and their data).
  • 📋 Export contacts: Regularly export contacts to a file .vcf via Contacts → Settings → Export.

Additional precautions:

  • 🚫 Avoid "memory cleaners" like Clean Master —they often delete temporary files that could help in recovery.
  • 🔋 Monitor the health of the drive: if the phone frequently reboots or "freezes", check the memory status through AIDA64 (section Storage → Health status).
💡

Even if you do not plan to reset the phone, create a backup copy right now. To do this, just go to Settings → Google → Backup and press Create a copy.

FAQ: Frequently asked questions about data recovery on Android

Is it possible to recover data if the phone does not turn on?

If the device does not respond to charging or is stuck on the logo, try:

  1. Connect the phone to the PC and check whether it is detected as a drive (sometimes it helps Recovery modeactivated through Power + Volume Down).
  2. Remove the memory card (if any) and scan it on another device.
  3. Contact service center for direct memory reading (method chip-off).

If the screen is broken, but the phone turns on, connect it to the monitor via USB-C to HDMI adapter or use USB debugging to control from a PC.

How to recover deleted messages in SMS?

SMS are the most difficult to recover, since they are stored in a database mmssms.dbTry it:

  • 📲 Without root: apps like SMS Backup & Restore (if a backup was previously made).
  • 🛠️ With root: Utility GT SMS Recovery scans system files for deleted messages.
  • 📧 Through the operator: Some mobile operators (for example, MTS or Beeline) store SMS history for up to 3 months. Contact the communication center with your passport.
Will apps like Recuva help if the phone is connected to the PC as a drive?

Yes, but with reservations:

  • 🖥️ Recuva, PhotoRec or TestDisk can scan Android internal memory if it is displayed as a removable disk (MTP mode).
  • 🔌 The efficiency is lower than when connecting via ADB or root, since the apps do not see all partitions.
  • ⚠️ Do not save the recovered files back to the phone - use another drive.

For best results, switch your phone to PTP mode (in the USB connection settings) and use Deep Scan.

What to do if the recovered files open with errors?

Damaged files are a common problem during recovery. Try:

  • 🖼️ For photos: Open in Photoshop or GIMP and export to another format.
  • 📄 For documents: Use LibreOffice to restore structures .docx/.xlsx.
  • 🎵 For audio/video: apps like VLC or Audacity can restore part of the data.

If the file is critical, contact laboratory - sometimes it helps hex editing (for example, through HxD).

Is it possible to recover data from a phone that has drowned?

If the phone has been in water:

  1. 🚫 Immediately turn off it and do not turn on —corrosion can damage the memory contacts.
  2. 💧 Wash the board distilled water or alcohol solution (at least 90%) to remove salts.
  3. 🌬️ Dry the device in rice or with silica gel (at least 72 hours).
  4. 🔧 After drying, remove the memory card and scan it on another device. You can try to restore the internal memory through chip-off.

The chances of success depend on the degree of damage. If the phone does not turn on even after drying, contact a service with equipment for ultrasonic cleaning boards.