Over time, any Android-based smartphone begins to work slower. This is an inevitable process associated with the accumulation of system garbage, file system fragmentation and application errors. When standard methods of clearing the cache and deleting unnecessary apps no longer produce tangible results, users often think about a radical solution - completely formatting the drive.
Formatting the internal memory returns the device to its factory state, erasing absolutely all user data. This is a powerful tool for restoring system functionality, but requires careful preparation. Incorrect actions can lead to the loss of important photos, contacts and documents without the possibility of recovery.
In this guide we will examine in detail all available methods of resetting data: from standard system settings to using the Recovery engineering menu and computer utilities. You will learn how to properly prepare a gadget for the procedure, what nuances exist for different manufacturers, and how to act in emergency situations when the phone does not turn on.
Preparing the device for a full data reset
Before initiating the data erasing process, it is critical to create a backup copy of all important information. The internal memory of the smartphone does not have a “recycle bin” function, so it will be impossible to recover deleted files without a previously created backup. Use cloud services, such as Google Drive or Yandex.Disk, to save documents and media files.
Pay special attention to synchronizing contacts and messages. Most modern devices automatically save this data in your Google account, but double-checking will not be superfluous. Go to your account settings and make sure the checkboxes next to “Contacts” and “Messages” are active. It is also worth exporting important files to an external drive or computer via a USB cable.
⚠️ Attention: Once the formatting has started, it is impossible to interrupt the process. Make sure that the battery level is at least 50-60% so that the device does not turn off at the most critical moment.
Don't forget to log out of all important accounts and unlink the device from protection services, such as Google Find My Device or Samsung Find My Mobile. If this is not done, after the reset the system may ask for the password from the previous account (FRP protection), and it will be extremely difficult to unlock the phone without this data. This is a security measure against theft, which often becomes an obstacle for honest users.
☑️ Checklist before formatting
Standard method through the Android settings menu
The safest and recommended formatting method is available directly in the operating interface systems. This method is suitable for devices that are functioning normally and have access to the desktop. The interface may differ slightly depending on the manufacturer's shell (MIUI, OneUI, ColorOS), but the logic of action remains the same.
First, open the main menu and find the settings section. It is usually indicated by a gear icon. You need to go to the category responsible for general system parameters. In pure Android, this is a section System, and in shells from Samsung or Xiaomi it can be called General settings or located at the very bottom of the list.
Next, find the item containing the words “Reset” "Restore" or "Factory settings". You will see a warning in the menu that all data will be deleted. The system will prompt you to select reset options. Make sure you select the option to completely erase data and not just reset your network or screen settings. Confirm the action by entering your PIN code or unlock pattern.
If your phone has an SD card, the system may prompt you to format it too. Be careful: if the card is used as internal memory, the data on it will also disappear. If it’s portable, select the option to save data on the card.
The reboot and cleaning process can take from 5 to 15 minutes depending on the storage capacity and processor speed. The screen may turn off and on several times - this is normal behavior. Do not press any buttons during this period. After completion, the device will start up as new, prompting you to select a language and connect to Wi-Fi.
Using Recovery mode for a hard reset
The situations are different: sometimes the smartphone freezes on the logo, does not respond to the sensor, or the unlock password is forgotten. In such cases, the regime Recoverycomes to the rescue. This is a special service environment, the bootloader of which is located in a separate memory section and allows you to control the system bypassing the main Android interface.
Entering Recovery mode is carried out by a combination of physical buttons when the device is turned off. There is no universal combination, but most often the button is pressed Volume Up and Power. Some models Samsung may require you to connect the USB cable to the computer when you press the buttons. Hold the keys until the logo or menu in English appears.
Navigation in this menu is carried out with the volume buttons (up and down), and the selection is confirmed with the power button. You need to find the item Wipe data/factory reset. Selecting this item will start the cleaning process. The system may request additional confirmation, asking you to select Factory data reset or Yes.
| Manufacturer | Button combination | Login features |
|---|---|---|
| Samsung (new) | Volume Up + Power | Requires a USB cable to be connected to the PC |
| Xiaomi / Redmi | Volume Up + Power | Wait for the Mi logo to appear |
| Pixel / Nexus | Volume Down + Power | First you will get to Fastboot, then use the arrows to select Recovery |
| Huawei / Honor | Volume Up + Power | Hold until vibration and logo |
⚠️ Attention: In Recovery mode, the touch screen does not work. All actions are performed only with mechanical buttons. Be careful when selecting menu items so as not to erase the wrong partition.
After successful execution of the command, the system will return to the main Recovery menu. Select Reboot system now to reboot. The first startup after such a reset will be longer than usual, as the system re-optimizes applications and creates the file structure.
What to do if the Recovery menu does not appear?
If standard combinations do not work, your device may have a hidden recovery partition or a damaged bootloader. Try connecting your phone to your PC and using the ADB command: adb reboot recovery. This is a software way to enter recovery mode.
Format via a computer and the ADB utility
For advanced users and specialists, there is a method of formatting via a computer using tools Android Debug Bridge (ADB). This method is indispensable when the phone screen does not work (black screen, but the phone vibrates), or when the sensor has completely failed. It requires drivers and the Platform Tools package installed on the PC.
For the method to work, USB debugging must have been previously enabled on the phone. If this feature has been disabled, this method will not work without unlocking the bootloader, which in itself is a complex procedure. Connect the device to the computer and open a command line or terminal in the folder with the ADB utility.
Enter the command to check the connection:
adb devicesIf a device with a serial number appears in the list, the connection is established. To perform a factory reset, use the following command:
adb reboot recoveryThis command will reboot the phone directly into Recovery mode, where you can perform a reset using the buttons if the sensor does not work. However, there is also a command for immediately resetting data without rebooting in the menu (does not work on all firmware):
adb shell recovery --wipe_dataThe ADB method gives maximum control over the device, but requires technical literacy. An error in the command can result in loading the wrong image or damaging partitions.
Using ADB also allows you to format specific partitions, for example, only the cache or user data, without affecting system files, if this is necessary for diagnostics. However, for the average user, a full reset via the menu or Recovery is a safer option.
Format features on different versions of Android
The reset procedure has evolved along with the operating system. In older versions of Android (prior to 6.0 Marshmallow), formatting was a simple process of clearing the file table. Modern versions (Android 10, 11, 12 and newer) have data encryption implemented by default.
When you reset on a modern phone, the system does not just delete files, but destroys the encryption keys. This makes data recovery with special apps almost impossible, which increases security when selling the device. However, this means that if you forget your password and reset it, the data will be lost forever, even in theory.
The behavior with SD cards has also changed. Starting with Android 6.0, the card can be used as an extension of internal memory (Adoptable Storage). In this case, the card is encrypted along with the main drive. When formatting the phone, the card is also cleared and becomes unreadable on other devices without reformatting.
Owners of devices with custom firmware (LineageOS, Pixel Experience) should know that the Recovery menu there may differ from the stock one. Often used TWRP, where formatting is done through the Wipe section and swiping across the screen. Be careful, in custom recovery there is an option to format the Data section, which removes encryption, which is required to install some modifications.
Possible problems after the reset and their solution
After formatting is complete, users may encounter a number of unusual situations. The most common is endless loading (bootloop). If the phone hangs on the logo for more than 10 minutes, the system partition may be damaged or the process may be interrupted. In this case, only flashing the device via a computer using official utilities will help (Odin for Samsung, Mi Flash for Xiaomi).
Another common problem is the Google account request (FRP Lock). If the account was not deleted from the settings before resetting, the phone will require you to enter the password for the last synchronized account. This is protection against theft. If you have forgotten your password, it will be difficult to restore access and will require contacting the service center with a purchase receipt.
⚠️ Attention: Do not try to bypass FRP protection using dubious apps from the Internet. This can lead to the installation of malware or permanent blocking of the device (bricked).
The battery may also drain quickly in the first day. This is due to the fact that the system indexes files in the background, updates applications and configures services. Let the phone work for a couple of hours with Wi-Fi connected, and the situation will stabilize. If the problems persist longer, there may be a hardware problem with the battery.
After turning on for the first time, do not install all applications at once. Let the system “settle” for an hour, then install apps one at a time to track down the possible culprit of slowdowns or overheating.
Frequently asked questions (FAQ)
Will formatting remove viruses and Trojans from the phone?
Yes, a full reset to factory settings (Factory Reset) removes all user applications and data, including most viruses that have not penetrated the system partition. Since the system partition is not overwritten during a normal reset, there is theoretically a possibility of retaining deeply embedded malware, but in practice this is extremely rare. For a complete guarantee, it is better to reflash the device in an official way.
Is it possible to recover photos after formatting the internal memory?
On modern smartphones with Android 6.0 and higher, where encryption is enabled, data recovery after a reset is almost impossible. Destroying the encryption key makes the files unreadable. On older devices without encryption, there is a chance, but it requires the use of expensive professional equipment and does not provide guarantees. Regular backups are the only reliable protection.
How long does the formatting process take?
Usually the process takes from 5 to 15 minutes. The time depends on the amount of internal memory (the larger the gigabyte, the longer it takes to clean) and the speed of the processor. The first startup after a reset may last longer - up to 20 minutes, as the system performs initial setup and optimization of applications.
Do you need to remove the SIM card before resetting?
It is not necessary to remove the SIM card, since formatting the internal memory does not affect the SIM card chip. However, if you plan to sell the phone, the SIM card must be removed. It is also recommended to remove the microSD memory card so as not to accidentally format it if it was configured as internal memory.
What should I do if the phone asks for a password after resetting, but I don’t remember it?
It was Google FRP protection that worked. You need to remember the password for the Google account that was synced on your phone before the reset. If the account is not restored, you will need to contact an authorized service center with the provision of documents confirming ownership of the device (receipt, box).