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 straightforward restart, which just turns the phone off and back on without deleting anything.

You might need a factory reset if your phone is running slowly, freezing constantly, or behaving erratically after installing an app or update. A reset also removes malware or spyware that regular antivirus tools cannot catch. If you are selling or giving away your phone, a factory reset ensures the new owner cannot access your personal data.

Before you reset, understand that this action cannot be undone. Back up anything you want to keep — photos, contacts, messages, and app data — to your Google account, Samsung Cloud, or a computer first.

Key Takeaways

  • A factory reset deletes everything on your phone and returns it to its original state; back up your data first.
  • The easiest method is through Settings > General Management > Reset > Factory Data Reset, which takes about 10 minutes.
  • If your phone will not turn on or respond, use the hardware button method: hold Power and Volume Up together until the recovery menu appears.
  • After the reset completes, you will need to sign in with your Google account and reinstall your apps from the Play Store.
  • If you forget your Samsung or Google password, you may not be able to use the phone after a reset without contacting Samsung support.

How to reset through Settings (the standard method)

This is the fastest way if your phone turns on and responds normally. Open the Settings app, then tap General Management (the exact name varies slightly by model and Android version, but it is usually near the bottom of the main Settings list). Look for Reset or Reset Options.

Tap Factory Data Reset or Reset All Data. The phone will show a warning listing what will be deleted. Read it carefully. You will be asked to enter your Samsung account password or Google password to confirm — this is a security step to prevent someone else from wiping your phone without permission. Enter the password and tap Reset or Delete All.

The phone will restart and begin erasing data. This usually takes 5 to 15 minutes. Do not turn off the phone or remove the battery during this time. When it finishes, you will see the initial setup screen, the same one you saw when you first turned on the phone.

How to reset using hardware buttons (if the phone is unresponsive)

If your phone will not turn on, is stuck in a boot loop, or will not respond to touch, use the hardware button method to access the recovery menu. The exact button combination depends on your Samsung model, but the most common is Power + Volume Up. Hold both buttons down at the same time for about 10 seconds, even if you see nothing happen on the screen.

The phone will vibrate and the Samsung logo will appear. Keep holding the buttons until you see the recovery menu — a list of options in white text on a black background. Use the Volume Down button to scroll to Wipe Data / Factory Reset or Factory Data Reset. Press the Power button to select it.

You will see a confirmation screen asking if you are sure. Use Volume Down to highlight Yes and press Power to confirm. The phone will erase all data and restart. This process takes longer than the Settings method — sometimes 20 to 30 minutes — and the screen may go black for extended periods. Wait until you see the setup screen before assuming something went wrong.

What happens after the reset is complete

Your phone will boot into the initial setup screen, the same one you saw on day one. You will be asked to select a language, connect to Wi-Fi, and sign in with a Google account. Use the same Google account you used before the reset if you want to restore your contacts, calendar, and some app data from backup.

After signing in, the phone will read and reinstall apps that were previously installed on your account. This can take 30 minutes to several hours depending on how many apps you had and your internet speed. Do not interrupt this process.

Your photos, messages, and other personal files will not return automatically unless you backed them up to Google Photos, Google Drive, Samsung Cloud, or another cloud service before the reset. If you backed up to a computer using Samsung Smart Switch, you can reconnect the phone to that computer and restore from the backup file.

If you forgot your password and cannot complete the reset

Samsung phones require you to enter a Google account password or Samsung account password to confirm a factory reset. This is a security feature to prevent theft, but it also means you cannot reset the phone if you do not remember the password.

If you forgot your Google password, go to accounts.google.com on a computer or another device and click Forgot password? Follow the steps to reset it. Once you have the new password, you can use it to complete the reset on your phone.

If you forgot your Samsung account password, go to samsungaccount.samsung.com and use the password reset tool there. If you cannot recover either password and do not have access to the email address associated with the account, contact Samsung Support — they may be able to help, but the process can take several days.

Backing up your data before you reset

The safest approach is to back up to multiple places. Open the Settings app and go to Accounts and Backup (or Cloud and Accounts, depending on your model). Tap Backup and make sure Back up to Google Account is turned on. This will save your contacts, calendar, app settings, and some app data to your Google account.

For photos and videos, open the Google Photos app, tap your profile picture in the top right, go to Photos settings, and turn on Backup and sync. Choose Backup by Google One or Original quality depending on your preference. This backs up all photos and videos to your Google account.

If you want to back up everything — including messages, call logs, and app data — use Samsung Smart Switch on a computer. read it from Samsung's website, connect your phone via USB cable, and follow the prompts to create a full backup file. Store this file somewhere safe, like an external hard drive or cloud storage.

When to call Samsung support instead of resetting

A factory reset solves most software problems, but it will not help if the issue is hardware-related. If your phone is physically damaged, the battery drains in minutes even when new, the screen is cracked or unresponsive, or the phone gets extremely hot during normal use, a reset will not fix these problems. Contact Samsung Support or visit a service center instead.

If your phone is still under warranty, Samsung may repair or replace it for free. If it is out of warranty, you will pay a service fee. Before paying for a repair, ask the technician whether the cost is worth it compared to buying a new phone — for older models, repair costs can exceed the value of the device.

Frequently Asked Questions

Will a factory reset remove a virus or malware?

Yes. A factory reset erases everything on the phone, including any malware. However, if the malware came from an app you downloaded, it will return if you reinstall that app. After the reset, be cautious about which apps you install and only read from the official Google Play Store.

Can I undo a factory reset?

No. A factory reset cannot be undone. The only way to recover data is if you backed it up to Google, Samsung Cloud, or another service before the reset. If you did not back up, the data is gone permanently.

How long does a factory reset take?

The reset itself usually takes 5 to 30 minutes depending on the method and model. After the reset, reinstalling apps and restoring data from backup can take an additional 30 minutes to several hours.

Do I need to charge my phone before resetting?

Yes. Make sure your battery is at least 50% charged before starting a factory reset. If the phone runs out of power during the reset, it may become unusable and require professional repair.

What if my phone is stuck on the setup screen after the reset?

This usually means the phone is still downloading and installing apps in the background. Wait at least one hour before assuming something went wrong. If it is still stuck after an hour, try restarting the phone by holding the Power button for 10 seconds. If that does not help, contact Samsung Support.