How to Factory Reset and Erase Data on the Samsung Galaxy S9/S9 Plus

  • Performing a factory reset will erase all personal data, apps, and settings from your Galaxy S9/S9 Plus.
  • It’s crucial to back up your important data before initiating a factory reset.
  • Samsung provides multiple methods to factory reset your device, including through the Settings menu and hardware key combinations.
  • After a factory reset, your device will be restored to its original out-of-the-box state.
  • Encryption and secure data erasure techniques ensure your personal information is permanently removed.

Resetting your Samsung Galaxy S9 or S9 Plus to its factory settings can be a useful troubleshooting step or a way to prepare the device for sale or transfer of ownership. However, it’s essential to understand that a factory reset will permanently erase all your personal data, installed apps, and customized settings.

Back Up Your Data

Before you initiate a factory reset, it’s crucial to back up your important data, such as contacts, photos, videos, documents, and any other files you want to keep. Samsung provides several options for backing up your data, including:

  • Samsung Cloud: You can back up your data to Samsung’s cloud storage service, which offers a certain amount of free storage space.
  • Smart Switch: This Samsung app allows you to back up your data to your computer or an external storage device.
  • Google Account: If you have a Google account set up on your device, your contacts, calendar events, and other data associated with your Google account will be automatically backed up.

Factory Reset Through Settings

The easiest way to perform a factory reset on your Galaxy S9 or S9 Plus is through the device’s Settings menu:

  1. Open the Settings app.
  2. Scroll down and tap General management.
  3. Tap Reset.
  4. Select Factory data reset.
  5. Scroll down and tap Reset.
  6. Enter your device’s PIN, password, or pattern if prompted.
  7. Tap Delete all to confirm the factory reset.

Your device will now begin the reset process, which may take several minutes to complete. Once finished, your Galaxy S9 or S9 Plus will restart and boot up like a brand-new device.

Factory Reset Using Hardware Keys

If you’re unable to access the Settings menu or your device is unresponsive, you can perform a factory reset using a hardware key combination:

  1. Turn off your device.
  2. Press and hold the Volume Down key and the Bixby key, then press and hold the Power key.
  3. When the Samsung logo appears, release all keys.
  4. In the Android Recovery menu, use the Volume Down key to highlight “Wipe data/factory reset,” then press the Power key to select it.
  5. Highlight “Yes — delete all user data,” then press the Power key to confirm.
  6. Once the reset is complete, highlight “Reboot system now,” and press the Power key to restart your device.

Secure Data Erasure

Samsung employs various techniques to ensure that your personal data is securely erased during a factory reset. One of the primary methods is encryption.

Modern Samsung devices, including the Galaxy S9 and S9 Plus, use full-disk encryption by default. This means that all data stored on the device is encrypted using a unique encryption key. During a factory reset, this encryption key is deleted, rendering the encrypted data completely inaccessible and unrecoverable.

Additionally, Samsung’s factory reset process overwrites the existing data on the device’s internal storage with random data or zeros, further ensuring that any residual data is permanently erased and cannot be recovered using data recovery tools.

After the Factory Reset

Once the factory reset is complete, your Galaxy S9 or S9 Plus will be restored to its original out-of-the-box state, just like when you first purchased it. You’ll need to go through the initial setup process, including:

  • Selecting your preferred language
  • Connecting to a Wi-Fi network
  • Setting up or restoring from a Google account backup
  • Configuring biometric authentication (fingerprint or facial recognition)
  • Restoring your backed-up data and reinstalling your apps

It’s important to note that after a factory reset, your device will be completely wiped clean, and all personal data, settings, and installed apps will be gone. This process is irreversible, so make sure you have a backup of any important data before proceeding.

FAQ

What is a factory reset?

A factory reset, also known as a master reset or hard reset, is a process that restores a device to its original factory settings, erasing all user data, installed apps, and customized settings.

Why would I need to perform a factory reset?

There are several reasons why you might need to perform a factory reset on your Galaxy S9 or S9 Plus:

  • Troubleshooting: If your device is experiencing persistent issues or performance problems, a factory reset can sometimes resolve the problem by starting fresh.
  • Selling or transferring ownership: When selling or giving away your device, it’s essential to perform a factory reset to remove all your personal data and ensure the new owner starts with a clean slate.
  • Restoring to default settings: If you’ve made extensive customizations or changes to your device’s settings and want to revert to the default configuration, a factory reset can accomplish this.

Will a factory reset delete everything on my device?

Yes, a factory reset will permanently erase all user data, installed apps, and customized settings from your Galaxy S9 or S9 Plus. This includes contacts, photos, videos, documents, app data, and any other files or settings you’ve added or changed since you first got the device.

How can I back up my data before a factory reset?

Samsung provides several options for backing up your data before a factory reset:

  • Samsung Cloud: Back up your data to Samsung’s cloud storage service.
  • Smart Switch: Use this Samsung app to back up your data to your computer or an external storage device.
  • Google Account: If you have a Google account set up on your device, your contacts, calendar events, and other data associated with your Google account will be automatically backed up.

Is there a way to recover data after a factory reset?

No, once a factory reset is complete, all user data is permanently erased from your device, and there is no way to recover it. This is why it’s crucial to back up your important data before initiating a factory reset.

How long does a factory reset take?

The time it takes to complete a factory reset can vary depending on the amount of data stored on your device and the processing power of your Galaxy S9 or S9 Plus. Generally, it can take anywhere from a few minutes to an hour or more for the process to complete.