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This is an article that shows you how to install the Android operating system of your Samsung Galaxy S3 phone to its initial setup. You can do this using the S3’s Settings app, or using the System Recovery menu at shutdown. Note that the initial setup will erase all data stored on the Galaxy S3’s internal storage (not the SD card), so you’ll need to back up the data you want to keep before proceeding.
Steps
Use the Settings app
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Swipe the screen down from the top to open a selection list.
- If your Samsung Galaxy S3 has not unlocked the screen, enter your PIN or passcode to unlock it.
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Open Settings
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by tapping the gear icon in the upper right corner of the selection list. This is exactly how you open the Settings app.
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Scroll to the bottom of the screen and select Back up and reset near the middle of the Settings page.
- By default, your S3 phone automatically backs up and restores data using your Google account.
- If you don’t want to back up and restore your personal data after reinstalling, please uncheck all the boxes on this page.
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Select Factory data reset near the bottom of the screen.
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Select Reset device in the center of the screen.
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Enter the PIN or password when prompted. If the screen lock feature is enabled on your Samsung Galaxy S3, you’ll need to enter your password or PIN before continuing.
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Select Delete all in the center of the screen. This will confirm your choice and begin resetting your phone. [1] X Research Sources .
- The factory reset can take a few minutes, so leave it alone until the factory reset is complete.
Using the System Recovery menu
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Turn off the phone Samsung Galaxy S3. Press and hold the Power button on the right side of the phone, then select Power off ‘ when prompted and confirm the selection by touching OK’ .
- Your phone must turn off completely before you can continue.
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Start opening the System Recovery menu. Press and hold the Power button, the Home button, and the Volume down button at the same time.
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Stop pressing the button when asked. Your phone vibrates and the screen shows a blue text in the upper left corner of the screen; this is a sign that you don’t need to hold the button anymore.
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Select Wipe data/factory reset . Press the Volume down button to move the bold down to Wipe data / factory reset option, then press the Power button to select. [2] X Research Source
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Select Yes — delete all user data (Yes — delete all user data) in the middle of the screen. The Samsung Galaxy S3 device will begin the installation again.
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Wait for the reinstallation to complete. Once the reinstall is complete, you will be asked to reboot in the next step.
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Press the Power button when prompted. You will see the message “Reboot system now” appear; Pressing the Power button will select Reboot and reboot the Samsung Galaxy S3 to complete the reset to factory settings.
Advice
- Verify that the personal data you want to save such as pictures, videos and contacts is saved to your phone’s micro SD card or to Google’s storage service before you begin the installation again.
- The data on the Samsung Galaxy S3 SD card will not be erased, so be sure to remove the SD card before recycling or selling your Samsung Galaxy S3 device.
- It’s best to reset your phone to its original setup before selling or recycling.
Warning
- All data in the internal hard drive of your Samsung Galaxy S3 will be erased when you reset the device.
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This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 20,395 times.
This is an article that shows you how to install the Android operating system of your Samsung Galaxy S3 phone to its initial setup. You can do this using the S3’s Settings app, or using the System Recovery menu at shutdown. Note that the initial setup will erase all data stored on the Galaxy S3’s internal storage (not the SD card), so you’ll need to back up the data you want to keep before proceeding.
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