What a factory reset does and when you need one

A factory reset erases everything on your Android 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 restart turns the phone off and back on but keeps all your data. A factory reset removes all of it.

You might reset your phone if you're selling it or giving it away and want to remove your personal information. You might also reset it if the phone is running slowly, freezing constantly, or behaving erratically after installing an app or update. A reset can sometimes fix software problems that a restart cannot.

Before you reset, understand that this action is permanent. Once you confirm a factory reset, you cannot undo it. Everything goes. That's why the first step is always to back up the data you want to keep.

Key Takeaways

  • Back up your photos, contacts, messages, and any other data you want to keep before starting a reset, because a factory reset deletes everything.
  • You can back up to Google Drive (free, built into Android) or to your computer using Android File Transfer or similar software.
  • A factory reset requires you to know your Google account password, because Android will ask you to sign back in after the reset completes.
  • The reset process takes 5 to 15 minutes and your phone will restart several times; do not turn it off or unplug it during this time.
  • After a reset, your phone will ask you to set it up again from scratch, just like when it was new.

Back up your data before you reset

Google Drive is the simplest backup method for most Android users because it's built into the system and free. Open Settings, go to Google, then tap Manage your Google Account. Select the Backup tab. You'll see options to back up your contacts, calendar, photos, messages, and app data. Tap Back up now to start. This backup stores your data in your Google account, so you can restore it after the reset.

If you want to back up photos and videos to your computer instead, connect your Android phone to your computer with a USB cable. On Windows, your phone will appear as a removable drive in File Explorer. On Mac, read Android File Transfer from Google, open it, and your phone will show up as a folder. You can then drag photos and videos to your computer's hard drive.

For contacts and messages, Google Drive handles contacts automatically if you use a Google account. For text messages, you may want to use a third-party app like SMS Backup+ (available in the Google Play Store) if those messages are important to you. Most factory resets do not preserve text messages, so this step is worth doing if you need to keep them.

How to reset your phone through Settings

This is the most common method and works on all Android phones. Open Settings and scroll down to find System (on some phones it's called About phone or Device). Tap System, then look for Reset options or Factory reset. The exact wording varies by phone manufacturer — Samsung calls it Reset, Google Pixel calls it Reset options — but the function is the same.

Tap the reset option. You'll see a warning that all data will be erased. Read it carefully. The phone will ask you to confirm by typing a PIN or pattern, or by entering your Google account password. This is a security step to prevent someone else from wiping your phone without permission. Enter the confirmation, then tap the button to proceed.

Your phone will restart and begin the reset process. You'll see a progress bar or loading screen. Do not turn off your phone, unplug it, or remove the battery during this time. The process usually takes 5 to 15 minutes. Your phone may restart several times. When it's done, you'll see the initial setup screen, the same one you saw when the phone was brand new.

How to reset your phone using recovery mode

If your phone won't start normally or Settings won't open, you can reset it using recovery mode. This is a special menu built into Android that runs before the main operating system starts. The steps to enter recovery mode vary by manufacturer, but the most common method is to hold the Power button and Volume Up button together for several seconds until you see a menu.

Once in recovery mode, use the Volume buttons to navigate and the Power button to select. Look for an option that says Wipe data or Factory reset. Select it, then confirm when prompted. The phone will reset and restart. This method is more technical than using Settings, but it works when the phone is too broken to use normally.

If you're not sure how to enter recovery mode on your specific phone, search online for "[your phone model] recovery mode" — the steps differ between Samsung, Google Pixel, OnePlus, and other brands. Having the exact steps before you start is much easier than trying to figure it out in the moment.

What happens after the reset is complete

When your phone finishes resetting, it will boot up and show you the initial setup screen. You'll 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. This is important because Android will ask for your Google account password to verify that you own the phone. If you use a different account or forget the password, you may be locked out temporarily.

After you sign in, your phone will offer to restore your backed-up data. If you backed up to Google Drive, you'll see options to restore your contacts, calendar, photos, and app data. Select what you want to restore. If you backed up photos to your computer, you'll need to transfer them back manually using the USB cable and File Transfer method.

Your apps will not automatically reinstall unless you backed them up through Google Play. If you want your apps back, open the Google Play Store, tap your profile icon, select Manage my apps and games, then go to the Manage tab. You'll see a list of apps you've installed before. Tap Install next to each one you want back, or tap Install all to reinstall everything at once.

Protecting your phone after a reset

A factory reset gives you a fresh start, but it doesn't change your security settings. After the reset, take a few minutes to lock down your phone again. Set a strong PIN or password in Settings under Security. Enable biometric locks like fingerprint or face recognition if your phone supports them. Turn on Find My Mobile (Samsung) or Find My Device (Google) so you can locate your phone if it's lost or stolen.

Review your app permissions. Open Settings, go to Apps, and check which apps have permission to access your camera, microphone, location, and contacts. Remove permissions from apps that don't need them. This is a good habit to repeat every few months, not just after a reset.

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 embedded in the phone's firmware (the core software), a factory reset may not remove it. If you suspect serious malware, contact your phone manufacturer's support line or visit a carrier store for help.

What if I forget my Google password after I reset?

Android will lock you out temporarily if you enter the wrong password too many times. Go to the Google Account Recovery page on a computer and follow the steps to reset your password. You can then use the new password to sign in on your phone. Keep your recovery email and phone number up to date in your Google account settings so this process is faster.

Can I reset my phone if I don't have a Google account?

You can start a factory reset without a Google account, but Android will require you to sign in with one after the reset completes. If you don't have a Google account, create one before you reset. It's free and takes a few minutes. Without it, you won't be able to use the Play Store or restore your data.

How long does a factory reset take?

The actual reset process usually takes 5 to 15 minutes, depending on how much data is on your phone and how fast your phone's processor is. The initial setup after the reset — signing in, restoring apps, and transferring files — can take an additional 30 minutes to an hour if you have a lot of data to restore.

Will resetting my phone remove my carrier plan or phone number?

No. A factory reset only erases data stored on the phone itself. Your carrier plan, phone number, and SIM card information are stored on your SIM card and your carrier's servers, not on the phone's storage. Your phone number and service will remain active after the reset.