What a factory reset does and when you need one

A factory reset erases all data on your Samsung phone and returns it to the state it was in when it left the factory. This means your photos, messages, contacts, installed apps, and personal settings all get deleted. The operating system and pre-installed Samsung apps stay, but everything you added or changed is gone.

You might need a factory reset if your phone is running slowly, freezing often, or acting unpredictably. A reset also helps if you are selling or giving away your phone and want to remove your personal information. If you forgot your lock screen password or PIN, a factory reset is one way to regain access, though it will erase everything on the device.

Before you start, back up anything you want to keep. Photos, contacts, and documents can be saved to your Samsung account, Google account, or a computer. Once you begin the reset, there is no way to stop it or recover deleted data.

Key Takeaways

  • A factory reset deletes all your personal data, photos, messages, and apps, so back up anything important before you start.
  • You can reset your phone through Settings, or by using the hardware button combination if your phone will not turn on or respond.
  • The reset process takes 5 to 15 minutes depending on how much data is on your phone.
  • After the reset completes, your phone will restart and ask you to set it up as if it were brand new.
  • If you are locked out of your phone, you may be able to reset it using your Samsung account or Google account credentials.

Back up your data before resetting

Open Settings and tap Accounts and backup (or Accounts on some models). Select Samsung Cloud or Google depending on which account you use. Tap Backup and choose what you want to save — contacts, messages, app data, and settings are the most important. Let the backup finish completely before moving forward.

For photos and videos, open the Gallery app, select the files you want to keep, and tap the menu icon (three dots). Choose Move to cloud or Upload if that option appears. You can also connect your phone to a computer with a USB cable and drag files to your computer's folder.

If you use Google Photos, open the app and tap your profile picture in the top right. Go to Photos settings and turn on Backup and sync. Your photos will upload to your Google account automatically. This backup happens in the background and does not require you to do anything else.

Reset through Settings (the standard method)

Open Settings and scroll down to find General management (on some phones it is called System). Tap it, then look for Reset or Reset options. Select Factory data reset or Erase all data.

The phone will show you a warning that all data will be deleted. Read it carefully. If you are sure you want to continue, tap Reset or Delete all. You may be asked to enter your PIN, pattern, or password to confirm. If you have a Samsung account or Google account linked to the phone, you may need to enter those credentials as well.

The reset process starts when ready. Your phone will restart several times and show a progress bar. Do not turn off the phone or remove the battery during this time. The whole process usually takes 5 to 15 minutes. When it finishes, your phone will restart and show the initial setup screen, just like when it was new.

Reset using hardware buttons if your phone will not respond

If your phone is frozen, will not turn on, or will not let you access Settings, you can force a reset using the physical buttons on the side of the phone. The button combination varies by model, but the most common is: hold the Volume Up button and the Power button together until the Samsung logo appears (usually 10 to 15 seconds). Then release both buttons.

Your phone will enter Recovery Mode, which shows a menu with options in white text. Use the Volume Down button to move down the menu until you see Wipe data/factory reset or Factory data reset. Press the Power button to select it. A confirmation screen will appear asking if you are sure. Use Volume Down to highlight Yes and press Power to confirm.

The reset will begin. Your phone will show a progress bar and may restart several times. This can take 10 to 20 minutes depending on how much data is on the device. Do not interrupt the process. When it finishes, you will see the setup screen.

If the button combination does not work on your model, search online for "[your exact phone model] recovery mode buttons" to find the correct combination. Different Samsung models use slightly different button sequences.

What to do if you are locked out of your phone

If you forgot your password, pattern, or PIN, you can still reset the phone using your Samsung account or Google account. On the lock screen, tap Forgot password or Forgot pattern. You will be asked to enter your Samsung account email and password, or your Google account credentials.

If you can log in with either account, the phone will let you create a new password or pattern without erasing your data. This is faster than a factory reset and keeps your files intact. If you cannot remember your account password either, you will need to reset it through the account provider's website before you can unlock your phone.

If the account login screen does not appear or does not work, use the hardware button method described above. This will erase all data but will let you access the phone again. After the reset, you can set up the phone with a new password and restore your backed-up data.

Set up your phone after the reset

When your phone restarts after the reset, it will show the initial setup screen. You will be asked to select your language, connect to Wi-Fi, and sign in to your Samsung account or Google account. Use the same account you backed up to earlier if you want to restore your data.

After you sign in, the phone will ask if you want to restore from your backup. Tap Restore and choose which backup to use. Your contacts, messages, app data, and settings will read and reinstall. This can take 10 to 30 minutes depending on how much data you backed up and how fast your internet connection is.

Your apps will not automatically reinstall from the backup. Instead, open the Google Play Store, tap your profile picture, and go to Manage my apps and games. Tap the Manage tab and you will see a list of apps you previously installed. Tap Install next to each app you want to put back on your phone. You can also search for apps by name in the Play Store and install them one at a time.

Common problems and how to fix them

The reset is taking longer than 20 minutes. This usually means your phone has a lot of data or the battery is low. Let it continue — do not turn it off. If it has been more than 45 minutes with no progress, try the hardware button reset method instead.

Your phone gets stuck on the setup screen. Make sure you have a strong Wi-Fi connection. If the connection keeps dropping, move closer to your router or try connecting to a different network. If the phone still will not move forward, restart it by holding the Power button for 10 seconds, then try setup again.

Your backed-up data did not restore. Check that you are signed in to the same account you used for the backup. If you used Samsung Cloud, make sure you are logged into your Samsung account. If you used Google, make sure you are logged into your Google account. You can also manually restore contacts and calendar events by going to Settings, then Accounts, then selecting your account and tapping Sync.

You forgot to back up your data before resetting. Once a factory reset completes, your personal data cannot be recovered. However, if you had automatic backup turned on through Google Photos or Samsung Cloud, some of your photos and contacts may still be in those accounts. Check your Google account and Samsung account to see what was saved.

Frequently Asked Questions

Will a factory reset remove viruses or malware from my phone?

A factory reset will remove most malware because it deletes all apps and data. However, if malware is built into the phone's system files, a factory reset may not remove it completely. If your phone had a serious infection, consider taking it to a Samsung service center after the reset to make sure it is clean.

Can I undo a factory reset after it is done?

No. Once a factory reset completes, all personal data is permanently deleted and cannot be recovered. This is why backing up before you reset is so important. If you did not back up and need to recover files, contact a data recovery service, though recovery is not always possible and can be expensive.

Do I need to remove my SIM card before resetting?

No. A factory reset does not affect your SIM card or your phone number. Your SIM card will work normally after the reset. However, if you want to be extra cautious, you can remove it before starting the reset and reinsert it after the phone restarts.

Will resetting my phone remove my Samsung account?

The reset will not delete your Samsung account, but it will sign you out of the phone. After the reset, you will need to sign back in during the setup process. If you want to remove the account completely, you can do that through your Samsung account settings on a computer or another device.

How long does a factory reset actually take?

Most factory resets take 5 to 15 minutes from start to finish. If your phone has a lot of data, it may take up to 20 or 30 minutes. The time also depends on your phone model and how old it is. Older phones may reset more slowly than newer ones.