How to Reset an Android Phone: Factory Reset Explained

Are you thinking about resetting your Android phone to its factory settings? A factory reset can be the solution to a range of problems, from sluggish performance to stubborn software errors. In this in-depth article we explain how to safely perform a factory reset on your Android device, whatever the brand or model.

What is a factory reset?

A factory reset, also called restoring factory settings, erases all data on your phone and returns the device to its original state. This means all apps, photos, contacts, messages and personal settings are removed. After the reset your phone is like new again, as if you had just taken it out of the box.

When is a factory reset necessary?

There are several situations in which a factory reset can be the best solution:

  • Selling or giving away your phone: Protect your privacy by erasing all personal data
  • Serious software problems: Apps that keep crashing, a phone that freezes or unexplained errors
  • Slow performance: After years of use, a reset can breathe new life into your phone
  • Malware or viruses: A reset can remove stubborn malicious software
  • Preparing for a major update: Sometimes a clean install helps with a smooth transition to a new Android version
  • Fixing storage problems: When your phone is full and cleaning up doesn't help

Important preparations

Before you start resetting your Android phone, there are a few essential steps you need to go through. This prevents you from losing important data.

Step 1: Back up your data

This is the most important step of all. Without a backup, you will lose all your photos, contacts and other data for good.

Backup via Google:

  1. Open the Settings app on your phone
  2. Tap Google (or Accounts, depending on your device)
  3. Select Backup
  4. Make sure Back up to Google Drive is turned on
  5. Tap Back up now

Backing up photos via Google Photos:

  1. Open the Google Photos app
  2. Tap your profile picture in the top right
  3. Select Photos settings
  4. Tap Backup
  5. Make sure Backup is turned on
  6. Wait until all photos have been synced

Backup to a computer:

  1. Connect your phone to your computer with a USB cable
  2. On your phone, choose File transfer
  3. Open the phone on your computer
  4. Copy important folders such as DCIM (photos), Downloads and Documents to your computer

Step 2: Write down important information

Before you reset, it is wise to write down a few things:

  • Your Google account details (email address and password)
  • WiFi passwords for home and work
  • Login details for apps you use a lot
  • Two-factor authentication codes (export these from your authenticator app)

Step 3: Remove your Google account

This is especially important if you are going to sell or give away your phone. Android has a security feature called Factory Reset Protection (FRP). If you don't remove your Google account before the reset, the new owner will need your Google password to be able to use the phone.

  1. Go to Settings
  2. Tap Accounts or Users and accounts
  3. Select your Google account
  4. Tap Remove account
  5. Confirm by tapping Remove again

Step 4: Remove your SD card

If your phone has an SD card, remove it before the reset. Although a factory reset usually does not erase the SD card, it is safer to remove it first. You can also format the SD card separately if you want to empty it.

Performing a factory reset: step by step

The exact steps can differ by brand and Android version, but the basics are largely the same. We cover the general method and specific instructions for popular brands.

General method via Settings

  1. Open the Settings app on your phone
  2. Scroll down and tap System
  3. Tap Reset options
  4. Select Erase all data (factory reset)
  5. Read the warning and tap Erase all data
  6. Enter your PIN, password or pattern if asked
  7. Tap Erase all data again to confirm
  8. Wait until the process is complete

Resetting Samsung phones

Samsung devices have a slightly different menu structure:

  1. Open Settings
  2. Tap General management
  3. Select Reset
  4. Choose Factory data reset
  5. Scroll down and tap Reset
  6. Enter your PIN or password
  7. Tap Delete all

Resetting Xiaomi phones

  1. Go to Settings
  2. Tap About phone
  3. Select Factory reset
  4. Tap Erase all data
  5. Confirm with your password
  6. Tap Factory reset

Resetting OnePlus phones

  1. Open Settings
  2. Go to System
  3. Tap Reset options
  4. Choose Erase all data (factory reset)
  5. Tap Erase all data
  6. Enter your PIN and confirm

Reset via Recovery Mode

If your phone no longer starts normally or you have forgotten the passcode, you can perform a reset via Recovery Mode.

Accessing Recovery Mode

The key combination differs by brand:

Most Android phones:

  1. Turn off your phone
  2. Press and hold the power button and the volume down button at the same time
  3. Let go when you see the boot menu or the Android logo

Samsung phones:

  1. Turn off your phone
  2. Press and hold the power button, volume up and the Bixby button at the same time
  3. Let go when the Samsung logo appears

Performing the reset in Recovery Mode

  1. Use the volume buttons to navigate through the menu
  2. Select Wipe data/factory reset
  3. Press the power button to confirm
  4. Select Yes or Yes - delete all user data
  5. Press the power button to confirm
  6. Wait until the wipe is complete
  7. Select Reboot system now

What happens during and after the reset?

During the factory reset, all data on the internal storage is erased. This process usually takes 5 to 15 minutes, depending on the amount of data and the speed of your phone. Never interrupt this process: doing so can lead to serious problems with your device.

After the reset, your phone restarts and you see the welcome screen. You then go through the initial setup:

  1. Choose your language
  2. Connect to WiFi
  3. Sign in with your Google account (or create a new account)
  4. Restore your backup (optional)
  5. Set up security options (PIN, fingerprint)
  6. Adjust any other settings

Alternative reset options

A full factory reset is not always necessary. Android also offers less drastic options.

Resetting network settings

This only erases WiFi passwords, Bluetooth pairings and mobile data settings. Useful when you have connection problems.

Resetting app preferences

This sets all app settings back to their defaults, but your apps and data are kept.

Wiping the cache

Some phones have an option to wipe the system cache via Recovery Mode. This can help with slow performance without losing any data.

Tips for after the reset

  • Take your time: Don't rush through the settings, set everything up carefully
  • Install apps gradually: Don't download all your apps again right away, only what you really need
  • Check your backup: Make sure your photos and contacts have been restored correctly
  • Update your system: Check for software updates right away
  • Set up security: Configure a strong PIN and fingerprint or face recognition

Frequently asked questions

Are all apps and data erased in a factory reset?

Yes, a factory reset erases all apps, photos, videos, contacts, messages and other personal data from the internal storage. Data on an SD card is usually not erased, but this can differ by device. Apps you downloaded from the Play Store can be reinstalled after the reset, because they stay linked to your Google account. That is why making a backup before you start is so important.

Can I reset my phone if I forgot the password?

Yes, this is possible via Recovery Mode. Keep in mind that after the reset you will need your Google account details to use the phone. This is a Google security measure called Factory Reset Protection (FRP). If you have also forgotten your Google password, you first need to recover it via the Google website before you can use your phone.

How long does a factory reset take on Android?

The reset process itself takes 5 to 15 minutes on average. The time depends on the amount of data that has to be erased and the speed of your phone. Setting your phone up again after the reset takes longer, especially if you restore a backup and reinstall apps. Count on 30 minutes to an hour in total for the whole process, including setting it up again.

Does a factory reset fix all problems with my phone?

A factory reset fixes most software problems, such as slow performance, crashing apps and freezes. However, it does not work for hardware problems. If your screen is damaged, the battery drains quickly due to wear, or the speaker doesn't work, a reset won't fix that. Very stubborn malware that has embedded itself in the system can also sometimes survive a reset. If in doubt, you can contact the manufacturer or a repair service.

Conclusion

A factory reset is a powerful tool to give your Android phone a fresh start. Whether you are experiencing software problems, are going to sell your phone, or simply want to start over, with the right preparation it is a safe and effective process. Always remember to make a backup first and to remove your Google account if you are giving the phone to someone else. Follow the steps in this article carefully and your phone will be like new again in no time.

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