The need to completely clean a tablet device arises for various reasons: from the banal sale of a gadget to a new owner to the elimination of critical software failures. When you decide to give up your device or just start over, simply deleting files is not enough. Residual data can be recovered by special utilities, which puts your personal information at risk.
The hard reset procedure returns the device to the state it was in immediately after leaving the production line. This is a complex process that affects system memory sections, so it must be approached responsibly. In this article, we will analyze in detail all the stages of preparing and performing the cleaning so that you do not lose important contacts and photos.
Preparatory stage before a full reset
Before pressing the reset button, it is critically important to save all valuable data. After completing the procedure, it will become impossible to restore information without a preliminary copy. Make sure your photos, videos and documents are transferred to cloud storage or an external drive.
Pay special attention to accounts. If you simply reset without logging out of your Google account, the FRP (Factory Reset Protection) protection system will kick in. This means that the new owner will not be able to activate the tablet without entering your Google account password.
- 📸 Back up photos and videos via Google Photos or copy them to your computer.
- 📞 Export contacts to a .vcf file or sync them with your Google account.
- 🔑 Write down passwords for important applications that are not automatically saved in the cloud.
- 💳 Unlink bank cards from Google Pay and other payment services.
☑️ Checklist for preparing to reset
Don't forget to check for an SD card. If your tablet has a memory card slot, it is better to remove it before starting the procedure. Although a reset usually does not affect external memory, accidental formatting can lead to the loss of data stored on the drive.
Standard reset through the settings menu
The safest and recommended method of cleaning is to use the built-in interface of the operating system. This method ensures that all processes terminate correctly and memory sections are properly removed. The path to the required option may differ slightly depending on the manufacturer's shell.
In "pure" Android or on devices with minimal interface changes, you need to go to the Settings → System → Reset settingssection. Here you will see an option Erase all data (factory reset). By clicking on it, the system will show a list of data that will be destroyed.
⚠️ Attention: Some manufacturers, such as Samsung or Xiaomi, may require you to enter a screen unlock PIN or pattern before confirming reset. Make sure you remember this data.
After confirming the action, the tablet will reboot and begin the erasing process. The screen may go blank for a few minutes, and the device may reboot on its own several times. Interrupting this process is strictly prohibited, as this may damage the bootloader.
What happens during a reset through settings?
The system sequentially deletes user data, application cache, network and personalization settings. A new encrypted key is then created for the memory, making the old data unreadable even when sectors are recovered.
Hard reset via Recovery Mode
If the tablet does not turn on, is stuck on the screen saver, or you have forgotten the unlock pattern, you will need to use Recovery Mode. This method is more aggressive and allows you to bypass the screen lock, but requires precise manipulation of the physical buttons.
A combination of the power and volume buttons is usually used to enter recovery mode. On most devices, you need to hold down the button Volume up and Power at the same time and hold them until the logo or the Recovery menu appears.
In the Recovery menu, control is carried out with the volume buttons (up/down to move), and the choice is confirmed by the power button. You need to find the item Wipe data/factory reset. After selection, confirm the action by selecting Yes or Factory data reset.
| Manufacturer | Button combination | Menu Features |
|---|---|---|
| Samsung | Volume Up + Power (or Bixby) | You may need to connect to a PC with a cable |
| Xiaomi / Redmi | Volume Up + Power | Menu in English or Chinese |
| Lenovo | Volume Up + Volume Down + Power | Sometimes you need to hold all three buttons |
| Huawei | Volume Up + Power | Older models may require charging to be connected |
If the button combination does not work, try connecting the switched off tablet to the computer with a USB cable, and then hold down the buttons. On new Android 11+ models, this is a prerequisite for entering Recovery.
After completing the erasing process, in the Recovery menu, select Reboot system now. The device will reboot and you will see the initial setup screen, just like when you turn on your new tablet for the first time.
Deleting a Google account to bypass FRP
The FRP (Factory Reset Protection) security system was implemented by Google to protect against theft. If a Google account was added to the device, then after resetting the device will ask for a password from this account upon first activation. This creates a problem when selling.
To avoid blocking, you must manually remove the account from the settings before resetting. Go to Settings → Accounts (or Users and accounts). Select your Google account from the list and click the button Delete account.
⚠️ Attention: Deleting an account from the settings does not delete your emails or data from the Google cloud. It only unlinks the device from the account, allowing another user to activate the tablet.
If you have already performed a reset and the tablet requires a password from the old account, it is extremely difficult to restore access without this data. The official way is to recover your password through a form on the Google website from another device. Third-party FRP bypass methods often violate the warranty and may be unstable.
Cleaning features on different versions of Android
The interface and logic of the system change with every major Android update. On older versions such as Android 6-8, the reset process was more straightforward and required fewer confirmations. In modern versions (Android 10-14), the emphasis has shifted to data security.
In Android 11 and newer, the “Reset settings through the settings menu” function has appeared, which has become more intelligent. The system now warns about which applications will be deleted, and suggests saving the data of some apps before formatting.
On tablets with a shell One UI from Samsung, the process may include an additional step of verifying your Samsung Account. If you do not remember the password for it, resetting through settings may be blocked by the manufacturer's security system.
The newer the Android version, the greater the levels of protection against accidental or unauthorized data reset. Always check the presence of all accounts before starting the procedure.
It is also worth noting changes in working with SD cards. In the latest versions of Android, the system may prompt you to format the memory card as internal storage. In this case, the data on the card is encrypted with the tablet key and will become unreadable on other devices after the reset.
Checking the result and transferring the device
After the tablet has booted up and shown the welcome screen, make sure that all data is really deleted. Go through the initial setup steps to the main screen without entering any personal information. Check the gallery, contacts and list of installed applications.
If you plan to sell the device, do not register a new account on it. Leave it on the language or Wi-Fi selection screen. This will give the buyer the opportunity to customize the tablet from scratch, which is a sign of a fair deal.
- 🔍 Check if there are hidden folders with downloaded files in the memory.
- 📱 Make sure that the "Find device" function is disabled.
- 🧹 Wipe the screen and body of the device to presentation.
⚠️ Attention: Settings interfaces may change with firmware updates. If you do not find the exact name of the item in the instructions, look for synonyms: “Recovery”, “Backup and reset”, “General settings”.
Complete cleaning of the tablet is a guarantee of your digital security. Do not neglect this stage, even if the device is given to friends. Personal correspondence, banking access and photos should not fall into the wrong hands due to your negligence.
Is it possible to recover data after a reset?
On modern devices with encryption by default, data recovery after a Factory Reset is almost impossible for the average user. Encryption keys are removed, making the information an unreadable set of bits.
Frequently asked questions (FAQ)
Will the operating system be removed when resetting the settings?
No, the Android operating system will remain on the device. The reset affects only the user partition of memory, deleting applications, files and settings, but system files remain intact.
What should I do if the tablet asks for a password for an account that I have already deleted?
Sometimes it takes time to synchronize Google servers. Try connecting to Wi-Fi and wait 10-15 minutes. If the problem persists, another account may have been added that you did not notice.
Is it safe to interrupt the reset process if it is frozen?
No, this is extremely dangerous. Interrupting the writing of data to system partitions can lead to the device becoming bricked. If the process is frozen for more than an hour, try a forced reboot, but be prepared for the need to reflash.
Do you need to remove the SIM card before resetting?
Removing the SIM card is not necessary for the reset process, but it is recommended to do so so as not to accidentally reset the mobile operator settings or not to lose contacts saved on the card, if they are there yes.
How long does it take to completely delete data?
Usually the process takes from 5 to 15 minutes, depending on the amount of memory and speed of the tablet’s drive. On devices with a large amount of full memory, the process may take longer.