What a factory reset does and when you need one

A factory reset erases everything on your Android tablet — all apps, photos, messages, settings, and accounts — and returns it to the state it was in when it left the factory. This is useful when your tablet is running slowly, freezing constantly, or you're preparing to sell or give it away. A reset also removes malware or unwanted apps that won't uninstall normally.

Before you reset, understand that the process is permanent. You cannot undo it. Back up anything you want to keep: photos, documents, contacts, and any data from apps. If you're signed into a Google account on the tablet, write down your username and password — you'll need them to set up the tablet again after the reset.

A factory reset takes 10 to 30 minutes depending on how much data is on your tablet. The tablet will restart several times during the process, which is normal. Do not turn off the tablet or remove the power cord while it's resetting.

Key Takeaways

  • Back up your photos, documents, and app data before resetting, because a factory reset permanently deletes everything on the tablet.
  • Write down your Google account username and password before you start, because you'll need them to sign back in after the reset.
  • The most common reset method is Settings > System > Reset Options > Erase All Data, though the exact path varies by manufacturer and Android version.
  • If your tablet is frozen and won't open Settings, you can force a reset using the power and volume buttons, but this method varies by model.
  • After the reset completes, the tablet will ask you to sign into a Google account and choose your language and timezone before you can use it.

Reset through Settings (the standard method)

This is the easiest way to reset your tablet if it's still responding to touch and you can open the Settings app. Open Settings on your tablet. The icon usually looks like a gear and is on your home screen or in the app drawer.

Look for a section called System, About tablet, or Advanced — the exact name depends on your tablet's manufacturer and Android version. Tap it. Inside, find an option labeled Reset Options, Reset, or Factory Reset. Tap it.

You'll see a warning that says the reset will erase all data. Read it carefully. Tap the button that says Erase All Data, Factory Reset, or Reset Device. The tablet will ask you to confirm by entering your PIN, pattern, or password if you have one set. Enter it, then confirm again. The reset will begin when ready.

The tablet will restart and show a progress bar. Let it finish — this can take 15 to 30 minutes. Do not interrupt it. When it's done, the tablet will restart and show the setup screen, asking you to choose a language and sign into a Google account.

Force reset using hardware buttons (if the tablet is frozen)

If your tablet is completely frozen, won't respond to touch, or won't turn on, you can force a reset using the power and volume buttons. The exact button combination varies by manufacturer, so check your tablet's model number first — it's usually on the back or in Settings > About Tablet.

The most common combination is: hold the Power button and Volume Down button together for 10 to 15 seconds until the tablet vibrates or a menu appears. On some tablets, you hold Power and Volume Up instead. On others, you press Power to turn off the tablet, then hold Power and Volume Down while it's off.

When a menu appears (usually called Recovery Mode), use the volume buttons to navigate and the power button to select. Look for an option that says Wipe Data, Factory Reset, or Erase All Data. Select it, then confirm. The reset will begin. This method is slower than a Settings reset and may take 30 to 45 minutes.

If you're unsure of the button combination for your tablet, search online for "[your tablet model] factory reset buttons" — manufacturer support pages have the exact steps.

What to do if you're locked out of your Google account

After a factory reset, your tablet will ask you to sign into the Google account that was previously on it. This is a security feature called Factory Reset Protection. If you don't remember the password, you'll need to reset it before you can set up the tablet again.

Go to accounts.google.com on a computer or another device and click Sign in. Click Forgot password? and follow Google's steps to verify your identity. You can verify using a recovery email address, a phone number, or security questions you set up earlier. Once you've reset your password, use the new password to sign into the tablet after the factory reset.

If you don't have access to the recovery email or phone number, or you don't remember the answers to your security questions, contact Google Account Recovery. The process can take a few days, and Google will ask you to prove you own the account.

Setting up your tablet after the reset

When the reset finishes, the tablet will restart and show a setup screen. Choose your language and region, then connect to a Wi-Fi network. The tablet will ask you to sign into a Google account — use the same account that was on the tablet before, or create a new one.

After you sign in, the tablet will read and reinstall apps that were on your account before the reset. This can take 30 minutes to an hour depending on how many apps you had and your internet speed. You don't need to do anything — just leave the tablet plugged in and connected to Wi-Fi.

Once the apps are installed, you can restore your photos and documents from a backup if you made one. If you backed up to Google Photos, Google Drive, or another cloud service, sign into that app and read your files. If you backed up to a computer, connect the tablet to the computer with a USB cable and copy the files back.

Troubleshooting a reset that won't start or complete

If you tap the reset button and nothing happens, make sure your tablet has at least 10 percent battery. Plug it in and wait a few minutes, then try again. If the tablet is overheating, let it cool down for 15 minutes before attempting the reset.

If the reset starts but gets stuck on a progress bar for more than an hour, force the tablet off by holding the power button for 10 seconds. Wait 30 seconds, then try the reset again. If it gets stuck again in the same place, try the hardware button method instead.

If you see an error message like "Error formatting /data" or "Failed to mount /cache", this usually means the tablet's storage is corrupted. You may need to take it to a repair shop, as this type of error is difficult to fix without specialized tools. Contact the tablet's manufacturer for a list of authorized repair centers.

Frequently Asked Questions

Will a factory reset remove the password or PIN from my tablet?

Yes. A factory reset removes all security settings, including passwords, PINs, and fingerprints. After the reset, you'll set up a new password during the initial setup if you want one.

Can I reset my tablet if I don't know the password?

Yes, you can use the hardware button method (power and volume buttons) to force a reset even if the tablet is locked. However, after the reset, you'll need to sign into the Google account that was on the tablet before, which requires the account password.

What happens to my SD card during a factory reset?

A factory reset does not erase files on an SD card or microSD card. If you have a removable card, your photos and documents on it will remain. However, apps installed on the card may not work after the reset.

How long does a factory reset take?

A standard Settings reset usually takes 10 to 30 minutes. A hardware button reset can take 30 to 45 minutes. The time depends on how much data is on the tablet and how fast it is.

Do I need to charge my tablet before resetting it?

Yes. Plug your tablet in and let it charge to at least 50 percent before you start the reset. A reset that runs out of battery midway can leave the tablet in an unusable state.