What a factory reset does and when you need one

A factory reset erases everything on your Samsung phone — all apps, photos, messages, contacts, and settings — and returns it to the state it was in when it left the factory. This is different from a regular restart. A reset wipes the device completely.

You might need a factory reset if your phone is running slowly, freezing constantly, or behaving erratically after a software update. A reset also removes malware or unwanted apps that won't uninstall normally. If you are selling or giving away your phone, a factory reset is the only way to make sure your personal data is not accessible to the next owner.

Before you reset, understand that you will lose everything that is not backed up to your Samsung account, Google account, or cloud storage. Photos stored only on your phone's internal storage will be gone. Text messages, call logs, and downloaded apps will disappear. Take time to back up what matters before you proceed.

Key Takeaways

  • A factory reset erases all data on your phone and returns it to factory settings, so back up photos, contacts, and messages first.
  • You can reset through Settings on most Samsung phones by going to General Management, then Reset, then Factory Data Reset.
  • If your phone is frozen or won't start, you can force a reset using hardware buttons — the exact button combination depends on your Samsung model.
  • After a reset, your phone will ask you to sign in to your Samsung account or Google account, and you can restore backed-up data from there.
  • A factory reset does not remove your Google account or Samsung account from the phone's security system, so you will need the correct password to set it up again.

How to reset through Settings on a working phone

If your phone is responsive and you can navigate the menu, this is the safest and most straightforward route. Open Settings and scroll down to find General Management (on some older Samsung models this may be labeled Backup and Reset or straightforward Reset).

Tap General Management, then look for Reset or Reset Options. You will see Factory Data Reset or Reset to Factory Settings. Tap it. The phone will show you a summary of what will be deleted and ask you to confirm. Read it carefully — this is your final note to cancel.

If your phone is protected by a PIN, pattern, or password, you will be asked to enter it before the reset proceeds. This is a security measure to prevent someone else from wiping your phone without permission. Enter your unlock code, then confirm the reset. The phone will restart and begin the process, which usually takes 5 to 15 minutes.

How to force a reset if your phone is frozen or won't start

If your phone is completely unresponsive or stuck in a boot loop, you cannot reach the Settings menu. In this case, you will use a combination of physical buttons to force a reset. The button combination varies by Samsung model, so the exact steps depend on which phone you have.

For most recent Samsung phones (Galaxy S10 and newer), hold the Volume Up button and the Power button together until the phone vibrates and the Samsung logo appears — usually 10 to 15 seconds. Do not release when you see the logo. Keep holding until the recovery menu appears on screen. Use the Volume buttons to navigate to Wipe Data / Factory Reset, then press the Power button to select it. Confirm the reset using the Volume buttons and Power button again.

For older Samsung models (Galaxy S9 and earlier), the combination is often Volume Down and Power held together, or Volume Up, Home, and Power all at once. If you are unsure which combination your model uses, search online for "[Your exact Samsung model] factory reset button combination" — the steps are model-specific and searching will give you the right sequence for your phone.

What happens after the reset is complete

When the reset finishes, your phone will restart and show the initial setup screen, the same one you saw when the phone was brand new. You will be asked to select a language, connect to Wi-Fi, and sign in to an account.

At this point, you have two choices. You can sign in to your Samsung account or your Google account (or both). If you backed up your data to either account before the reset, you can restore photos, contacts, app data, and settings from that backup. The phone will read and reinstall your apps from the Google Play Store automatically if you sign in with your Google account.

Be aware that your phone is still protected by Reactivation Lock (Samsung's security feature) or Find My Mobile (Samsung's account lock). If you do not sign back in with the same Samsung account or Google account that was on the phone before the reset, you will be locked out and unable to use the phone. This is intentional — it prevents theft. If you have forgotten your account password, you will need to recover it through the account provider's website before you can proceed.

Backing up your data before a reset

The best time to back up is before anything goes wrong. Open Settings, go to Accounts and Backup (or Cloud and Accounts on some models), and tap Backup. You will see options to back up to your Samsung account or to Google Drive. Choose one or both, then tap Back Up Now. This will save your contacts, calendar, messages, app data, and settings to the cloud.

For photos and videos, open the Gallery app and look for a backup or sync option in the menu. You can also use Google Photos — install it from the Play Store, sign in with your Google account, and turn on backup. Google Photos will upload your photos to your Google account automatically, and they will be there after your reset.

If you have documents, spreadsheets, or other files, make sure they are saved to Google Drive, OneDrive, or another cloud service. Files stored only on your phone's internal storage will be deleted during a factory reset.

Troubleshooting a reset that will not complete

Occasionally a reset will stall or fail. If the phone is stuck on the reset screen for more than 30 minutes, force a restart by holding the Power button for 10 seconds. This will interrupt the reset and restart the phone. You can try the reset again, or contact Samsung support if the problem repeats.

If you see an error message during the reset, write down the exact text and search for it online along with your phone model. Error messages are usually specific to a particular issue — a corrupted file, insufficient storage, or a problem with the account lock — and the solution depends on which error you are seeing.

If the phone will not start at all after a reset attempt, try charging it for at least 30 minutes, then attempt a forced reset again. A completely drained battery can interrupt the process. If it still will not start, the phone may have a hardware problem, and you should contact Samsung support or visit a service center.

Frequently Asked Questions

Will a factory reset remove my Google account from the phone?

No. A factory reset removes your data, but the phone still has your Google account registered in its security system. After the reset, you will be asked to sign in again with your Google account password. If you do not sign in with the same account, the phone will lock you out. This is called Reactivation Lock, and it is designed to prevent theft.

Can I cancel a factory reset once it has started?

If you are resetting through Settings, you can cancel before you confirm. Once you tap the final confirmation button, the reset will begin and cannot be stopped. If you are doing a forced reset using buttons, you can power off the phone before the reset completes by holding the Power button, but this may leave the phone in an unstable state. It is better to let the reset finish.

Will a factory reset fix my phone if it is running slowly?

Often yes. A reset removes apps, cached files, and settings that may be slowing the phone down. However, if the slowness is caused by a hardware problem — a failing storage drive or overheating processor — a reset will not fix it. If your phone is still slow after a reset and you have not reinstalled many apps, the problem is likely hardware-related.

Do I need to remove my SIM card before a factory reset?

No. A factory reset does not affect your SIM card or your phone number. Your SIM card will work normally after the reset. You do not need to remove it or do anything special with it.

What if I forget my Samsung account password after a reset?

Go to the Samsung account website on a computer and use the password recovery tool. You will need access to the email address or phone number associated with your account. Once you have recovered your password, you can sign in on your phone. If you cannot recover your account, contact Samsung support — they may be able to help you regain access.