How to get memory back on an Android phone: from simple methods to technical ones

Smartphone memory is not only a place for photos and applications, but also a repository of personal data, passwords, correspondence and work files. Losing access to it can be a real disaster: from the inability to open an important document to blocking the device due to a forgotten pattern. Unlike computers, where data recovery often comes down to connecting a hard drive to another PC, on Android everything is more complicated due to the closed file system and the variety of manufacturers.

In this article we will analyze all possible scenarios for loss of memory access: from banal drive fullness to hardware failures. You will learn how to get back deleted files, bypass the screen lock without losing data, and what to do if the phone does not turn on at all. Important: not all methods are universal - effectiveness depends on the device model (Samsung, Xiaomi, Google Pixel), Android version (from Android 10 to Android 15) and memory type (built-in eMMC/UFS or removable microSD).

We warn you right away: some methods require root access or special equipment (for example, boxes for firmware). If you are not confident in your skills, it is better to contact a service center. But in 80% of cases, the problem is solved at home.

1. Diagnosis of the problem: why the memory became inaccessible

Before trying to “return” the memory, you need to understand what exactly happened. Symptoms can be different:

• 📱 The phone turns on, but asks to unlock (forgot your PIN, password or pattern).
• 🚫 The device does not respond to charging, does not turn on, or is stuck on the logo.
• 🗑️ The memory “disappeared” after updating Android or resetting the settings.
• 📉 The settings show that the memory is full, but you did not save anything.
• 🔧 Files disappeared after connecting to the computer or using a file manager.

Each case requires your approach. For example, if the phone is does not turn on, then data recovery via ADB or TWRP will be useless - you will need JTAGequipment or replacing the memory chip. And if you just forgot password, then you can get by with a reset via Google Find My Device.

⚠️ Attention: On devices with Android 12+ and chip Titan M (for example Google Pixel 6/7/8) password reset via Fastboot or Recovery can lead to full data encryption and their irretrievable loss. Check your phone model before taking action!

2. Restoring access if you forgot your password (without data loss)

If you forgot pattern, PIN or passwordbut the phone turns on and asks to unlock, there are several ways to get around lock without resetting to factory settings (and without data loss). However, their effectiveness depends on the version of Android and the presence of root access.

Method 1: Unlocking via ADB (only if debugging is enabled)

If the phone was previously activated USB debugging (Settings → For developers → Debugging USB, you can delete the file with the password via ADB:

1. Connect your phone to the computer via USB.
2. Open the command line (cmd) and enter:

   adb shell
   rm /data/system/gesture.key

3. Reboot the device. The password will be reset.

On Android 10+ this method may not work due to strong encryption. In this case, try the alternative command:

adb shell am start -n com.android.settings/.ChooseLockGeneric

Method 2: Using Google Find My Device (for Google accounts only)

If your phone is linked Google account, you can reset your password remotely:

1. Go to site Find My Device.
2. Select a locked device.
3. Click “Locking a device" and enter a new password.

⚠️ Attention: On some devices (Xiaomi, Huawei) after such a reset, you may be required to enter the old password to decrypt the data. If you don't remember it, your data will be lost!

Check if USB debugging is enabled|Make sure your phone is charged at least 50%|Connect the original USB cable|Download ADB drivers for your model-->

3. Recovering deleted files (photos, videos, documents)

If the files were deleted by accident (for example, through “Clear all” in the gallery or after a reset), you can try to recover them. Success depends on:

• 🕒 Time elapsed after deletion (the faster you act, the higher the chances).
• 📱 Type of memory: on eMMC the chances are higher than on UFS 3.1 (due to trimming features).
• 🔄 Availability root access (without them, recovery is limited).

Recovery apps (without root)

For devices without root access suitable:

• 📱 DiskDigger — scans the internal memory for deleted files (the free version recovers only photos).
• 🖥️ EaseUS MobiSaver — works via a connection to a PC, supports message recovery WhatsApp.
• 🌐 GT Recovery (only for microSD) - restores data from a memory card.

Important: Do not install recovery apps on the same phone from which you deleted files! This will overwrite memory sectors and reduce the chances of success.

Recovery with root access

If you have rootuse TWRP + Nandroid Backup:

1. Install TWRP Recovery for your model.
2. Create a backup copy of the partition /data.
3. Use Autopsy or Scalpel to deeply scan the image.

4. Reset to factory settings: when this is the only way out

If the phone does not respond to unlockingand other methods did not help, the only option left is Hard Reset (reset via Recovery). This will delete all data but restore access to the device. The instructions are universal for most brands (Samsung, Xiaomi, Realme, Oppo), but there may be nuances.

How to do a Hard Reset

1. Turn off the phone.
2. Press the button combination (depending on the model):
   • Samsung: Power + Volume up + Bixby
   • Xiaomi/Redmi: Power + Volume up
   • Google Pixel: Power + Volume down

⚠️ Attention: On devices with Android 9+ and function File-Based Encryption (FBE) after a reset, you may be required to enter the old password to decrypt the data. If you don’t remember it, the data will be lost forever!

What to do if the reset did not help

If after Hard Reset phone:

• 🔄 Stuck on the logo - try flashing the stock firmware via Odin (Samsung) or Fastboot.
• 🔐 Asks for a Google account (FRP Lock) - use FRP Bypass Tools (for example, SamFirm for Samsung).
• 📵 Does not turn on at all - the problem is in the hardware (memory controller or battery).

fastboot flashing unlock

fastboot flash boot boot.img
fastboot flash system system.img
DO NOT use fastboot flash userdata!