How to save data from a locked Android: from ADB to service modes

A ​​forgotten pattern key, PIN code or fingerprint that is no longer recognized is a situation familiar to many owners of Androiddevices. According to statistics Google, every fifth user blocked himself at least once in his own smartphone, and 12% of them lost access to important data forever. The reason is simple: standard unlocking methods (reset via Recovery or Find My Device) erase all information from the device. But what if your phone stores irreplaceable photos, work documents, or an archive of correspondence?

In this article we will look at 7 proven ways to extract data from a locked Androidincluding little-known tricks for devices with Qualcomm, Mediatek and Exynos. Important: the effectiveness of the method depends on the version Android, smartphone model and type of lock (password, pattern, biometrics). Some solutions require preliminary preparation (for example, enabled USB Debugging), others work even on “bricks” without reacting to buttons. We will also indicate in which cases data can be saved technically impossible without specialized equipment —this will save you time on useless attempts.

We warn you in advance: some methods involve working with ADB, Fastboot or service protocols. If you have never encountered these tools, it is better to turn to professionals - a mistake in the command can turn your phone into a brick. For beginners, we have highlighted the simplest methods with minimal risk.

1. Check if USB Debugging is enabled (even if the phone is locked)

This is the only method that allows get full access to files without resetting the settings - but only if USB Debugging locking has been activated. It's easy to check: connect your phone to your PC via USB, open to blocking. It's easy to check: connect your phone to your PC via USB, open Device Manager (in Windows) and look in the list Android ADB Interface or Android Composite ADB Interface. If there is no such device, proceed to the next section.

If ADB is available, run on the command line:

adb shell
su
cp /data/media/0 /sdcard/backup -r

This command will copy all user data (photos, documents, music) from the internal memory to a folder /sdcard/backup. After that, remove the memory card or connect the phone as a USB drive. Important: on new versions Android (11+), additional confirmation may be required on the phone screen - if the screen is locked, this method will not work.

⚠️ Attention: On devices with Samsung Knox (for example, Galaxy S21 and newer) or Google Titan M (pixels) even enabled ADB will not provide full access to /data due to hardware protection. In this case, you can only copy files from folders DCIM, Downloads and Pictures.

• 🔌 Suitable for: Android 5.0–10.0, devices with rooted rights or enabled ADB.
• 🚫 Will not work if: USB Debugging disconnected, the phone is switched off or discharged.
• ⚡ Speed: 5–15 minutes (depending on the amount of data).

2. Use Recovery mode to copy data (without resetting)

Many users mistakenly believe that Recovery Mode is only needed to reset settings. In fact, some firmware (for example TWRP or stock Recovery from Xiaomi) has a function Mountthat allows you to connect internal memory as a removable disk. This works even without root access, but requires custom recovery or vulnerability in stock.

Instructions for devices with TWRP:

1. Turn off the phone, hold down Power + Volume Up (the combination can differ).
2. In the menu TWRP select Mount → Enable MTP.
3. Connect the phone to the PC - the internal memory will appear as a removable disk.
4. Copy the necessary files (usually these are folders DCIM, Downloads, WhatsApp).

For stock Recovery (for example, on Samsung or Huawei) there are less chances, but you can try:

adb pull /data/media/0/Camera/ C:\Backup\Photos

This command will copy photos from the folder Camera to disk C:\. on devices, the path can be encrypted.

⚠️ Attention: On devices with Android 11+ i File-Based Encryption (FBE) even TWRP will not be able to decrypt data without a password. Check if encryption is enabled in the settings (path: Settings → Security → Encryption).

3. (EDL, Download Mode)

Manufacturers leave in phones service modes for repair and diagnostics. Some of them (for example, EDL y Qualcomm or Download Mode y Samsung) allow you to get low-level memory access. This method is more complicated than the previous ones, but often works even on locked devices with a broken screen.

For devices on Qualcomm (most Xiaomi, OnePlus, LG):

1. Transfer the phone to mode EDL:
   • For working devices: adb reboot edl.
   • For "bricks": we close the test points (you need to disassemble the phone).

For Samsung (mode Download Mode):

• Install Odin and drivers Samsung USB.
• Press Volume Down + Power + Bixby (on new models - Volume Up + Volume Down + USB).
• Connect the phone to the PC - in Odin the port must be determined COM.
• Use the utility Samsung Tool PRO to extract the data (license required).

This method requires technical skills and is often associated with risk total data loss in case of error. For example, an incorrect command in QFil can erase partitions modem or boot, after which the phone will not turn on.

4. Bypassing blocking through a Google account (only for Android 4.4–7.0)

On older versions Android (up to Nougat inclusive), after 5 incorrect attempts to enter the password, the system offered to unlock the phone through the account Google. This method no longer works on new devices, but if you have Android 4.4–7.0try:

1. Enter any password 5 times in a row.
2. Click on the button that appears Forgot your password?.
3. Enter login and password from Google accountthat was linked to the phone.
4. Set a new PIN or pattern key.

If the button does not appear, try an alternative method:

• Connect your phone to Wi-Fi (if you have access to the notification panels).
• Dial the code in an emergency call ##7378423## (for Sony).
• In the service tests menu, find the item Reset User Lock.

⚠️ Attention: This method is blocked for security reasons. Attempts to bypass the lock via Android 8.0+ this method is blocked for security reasons. Attempts to bypass the blocking through Google on new devices will lead to a complete reset (Factory Reset).

5. Extracting data via a memory card or OTG drive

If you have a card installed on your phone and you have previously saved files to it. (photos, videos, documents), just remove it and connect it to another device via a card reader. But what if there is no data on the card and the internal memory is locked? microSD-card, and you previously saved files to it (photos, videos, documents), just remove it and connect it to another device via a card reader. But what if there is no data on the card and the internal memory is locked?

In this case, USB OTG-cable an external drive (flash drive or hard drive) will help:

1. Connect OTG cable to the phone, and to it - a flash drive (formatted in FAT32).
2. On some devices (Xiaomi, Realme) a notification about the connected drive will appear. Tap on it.
3. In the file management menu, select the option Move data or Export.
4. Copy the required files to a flash drive (usually folders available DCIM, Downloads, Music).

If the notification does not appear, try:

• 🔄 Reboot the phone with a connected flash drive.
• 🔌 Use OTG-hub with external power (sometimes the phone does not have enough power for flash drive).
• 📱 Connect the mouse via OTG and try to control the phone blindly (if the screen does not respond).

Limitations of the method:

• It will not be possible to copy application data (WhatsApp, Telegram, Viber).
• On Android 10+ access to internal memory through OTG is often blocked.
• Some manufacturers (Huawei, Oppo) disable OTG in a locked state.

6. Specialized apps for unlocking (risks and alternatives)

There are hundreds of apps on the Internet that promise to “unlock any Android in 5 minutes”: Dr.Fone, iMyFone LockWiper, Tenorshare 4uKey. Most of them either don’t work or require payment for functionality that can be implemented for free. We tested 10 popular utilities - only 2 showed at least some result:

The only case when such apps are justified is if you have Samsung s Android 7–9 i enabled OEM Unlock. In this case, Tenorshare can reset the lock without losing data. For other models, the efficiency is close to zero.

Safe alternative - contact the service centerThe cost of unlocking without losing data:

• Qualcommdevices: 1500–3000 ₽ (used EDL).
• Mediatek: 2000–4000 ₽ (firmware required via SP Flash Tool).
• Exynos (Samsung): 3500–6000 ₽ (need box Z3X or Octoplus).

⚠️ Attention: Before contacting the service, check whether they work with your model. Some workshops take an advance payment and then report that “the data is not recoverable.” Ask for a guarantee on the result.

7. When it is impossible to save data: signs of hopeless cases

Unfortunately, not all blocking can be bypassed. Here are the signs that the data is lost forever:

• 🔒 Phone with Android 11+ and switched on File-Based Encryption (FBE) (checked through fastboot getvar all — look for the line fbe: yes).
• 🔧 Device with Samsung Knox or Google Titan M (for example, Galaxy S21, Pixel 6).
• 💥 The phone does not turn on (no reaction to charging, the indicator does not light).
• 🔄 On the screen there is an inscription "Your device is corrupt. It can't be trusted" (triggered RPMB-protection).
• 🛠️ The flash memory is damaged (detected by errors E:Failed to mount /data v Recovery).

In these cases, even professional tools (UFED, Cellebrite) will not help. The only way out is to recover data from backup copy (Google Drive, Samsung Cloud) or from SIM cards (contacts).

If the phone still responds to connection to the PC (defined as Qualcomm HS-USB QDLoader 9008 or Mediatek Preloader), but the data is encrypted, you can try hardware chip-off. It is expensive (10,000–30,000 rubles), but sometimes it works. The essence of the method: specialists remove the memory chip and read its contents on the programmer.

FAQ: Frequently asked questions about unlocking Android

adb shell getprop ro.crypto.state