How to Factory Reset Android | Data Wipe Before Selling and Troubleshooting Reset

Performing a factory reset on an Android phone is one of those tasks that sounds straightforward but carries real risk if you skip even one preparatory step. A reset wipes every piece of data from the device — photos, app data, messages, contacts, and system settings — and returns it to the same state it was in when it left the factory. Done correctly, it is the safest way to hand off a device before selling or gifting it, and it is often the most effective solution for persistent software problems that refuse to respond to other fixes.

The biggest mistake people make is starting the reset without completing two essential prerequisites: backing up their data and removing their Google account from the device. Forgetting to back up is obvious in its consequences, but skipping the Google account removal leads to a subtler problem called Factory Reset Protection (FRP). FRP is a security feature that locks the device to the original owner's Google account after a reset. If you sell the phone without disabling FRP, the buyer will be unable to set up the device — a frustrating outcome for both parties.

This guide covers everything from the backup checklist through model-specific reset instructions, recovery mode resets for phones that will not respond to normal touch input, and a complete troubleshooting section for the most common problems that arise during and after the process.

What to Do Before Resetting | Backup and Account Removal

A factory reset is irreversible. Once the process begins, there is no pause button and no undo. All data on the device is permanently deleted. Treat the steps in this section as mandatory, not optional, before you proceed.

Back Up to Google Drive

Android's built-in backup system uses your Google account to save call history, app data, device settings, and SMS messages to Google Drive. Follow these steps to trigger a fresh backup immediately before your reset:

Open Settings.
Tap Google, then tap Backup.
Tap Back Up Now.
Wait for the process to complete. When it finishes, the timestamp under the backup entry should read "Just now" or show today's date.

A few things to keep in mind: some apps do not participate in Android's standard backup system and require their own export steps. LINE is a notable example — open LINE, go to Settings > Chats > Back Up Chats, and run a manual backup to Google Drive or iCloud before proceeding. Game save data, banking apps, and other apps that handle sensitive data often disable backup for security reasons, so check each important app individually.

Confirm Your Photos and Videos Are Synced

If you use Google Photos, verify that every photo and video has uploaded to the cloud before resetting:

Open Google Photos.
Tap your profile icon in the upper-right corner.
Tap Photos settings, then tap Backup.
Confirm that Backup is on and that the status reads Backup is complete.

If the status shows Backing up or a count of items waiting, connect the phone to Wi-Fi and leave Google Photos open until the upload finishes. Do not start the reset while a backup is still in progress. Resetting while photos are mid-upload will result in permanent loss of those images.

Remove Your Google Account (FRP Prevention)

This step is the most commonly skipped, and skipping it causes the most post-reset trouble. Factory Reset Protection is a security mechanism built into Android. When a Google account is active on a device at the time of reset, Android ties the device to that account. After the reset, the first setup screen requires the original owner to sign in with their Google credentials before the device can be used. If you sell the phone without removing your account, the buyer will be locked out.

To remove your Google account before resetting:

Open Settings.
Tap Google.
Tap the three-dot menu in the upper-right corner.
Tap Remove account (not sign out — full removal is required).
Confirm by tapping Remove account on the confirmation screen.

On some models the path is Settings > Accounts > tap your Google account > Remove account. The wording varies slightly by manufacturer and Android version, but the key point is to choose remove rather than sign out. Signing out does not disable FRP; removing the account does.

Remove the SIM Card and SD Card

Before initiating the reset, physically remove both the SIM card and any SD card:

SIM card: You will need to transfer it to your next device or return it to your carrier. Do not leave it in a phone you are selling.
SD card: Some reset options include erasing the SD card as well as internal storage. To guarantee the card's data is safe, remove it first. If you want to erase the SD card, do so separately through Settings > Storage after removing it from the device.

How to Factory Reset Android from Settings

Once your backup is confirmed and your Google account is removed, you are ready to run the reset. The Settings app provides the standard path for most phones. The exact menu names vary by manufacturer, but the overall flow is the same.

Standard Android Reset Steps

This sequence works on most Android phones running a relatively standard version of Android:

Open Settings.
Tap System.
Tap Reset or Reset options.
Tap Erase all data (factory reset).
Review the information on the confirmation screen and tap Erase all data.
Enter your PIN, pattern, or password to confirm your identity.
Tap Erase all data one final time to begin.

The reset typically takes 5 to 15 minutes. The screen may go dark, display a progress indicator, and cycle through several reboots before showing the initial setup screen. Do not interrupt the process by pressing the power button. If the battery runs low mid-reset, the process may fail and leave the phone in an inconsistent state, so plug in the charger before you start.

Samsung Galaxy (One UI) Reset Steps

Samsung devices run One UI on top of Android, and the reset menu uses slightly different terminology:

Open Settings.
Tap General management.
Tap Reset.
Tap Factory data reset.
Scroll down and tap Reset at the bottom of the screen.
Enter your PIN or password.
Tap Delete all to confirm and begin the process.

If you have a Samsung account registered on the device, remove it before resetting in addition to your Google account. Go to Settings > Samsung account > the three-dot menu > Sign out or Remove account. Samsung accounts are separate from Google accounts, and an unremoved Samsung account can also cause account lock issues after reset.

Google Pixel Reset Steps

Pixel phones run near-stock Android, so the steps closely match the standard procedure:

Open Settings.
Tap System.
Tap Reset options.
Tap Erase all data (factory reset).
Tap Erase all data.
Enter your PIN or password.
Tap Erase all data to confirm.

Pixel phones run the reset efficiently and usually complete it in under 10 minutes. On Pixel 8 and later models, you may see a prompt about Advanced Protection after setup is complete — this is an opt-in security feature and is not related to the reset itself.

AQUOS (Sharp) Reset Steps

AQUOS phones use Sharp's customization layer, which places the reset option under a different menu path:

Open Settings.
Tap System.
Tap Backup & reset or Reset (the name depends on Android version).
Tap Factory data reset.
Tap Reset device.
Enter your PIN or password.
Tap Erase everything to confirm.

If you cannot find the reset option by navigating the menus, use the search field at the top of the Settings app and type "reset" or "factory." This shortcut works on most Android phones regardless of manufacturer and saves time when menus are buried.

How to Factory Reset via Recovery Mode

Recovery mode is a minimal operating environment that runs independently of the main Android system. It is the appropriate tool when the phone's display is damaged, the touchscreen is unresponsive, or the phone crashes before you can navigate to the Settings reset option. Recovery mode lets you wipe the device even when normal software access is impossible.

How to Boot into Recovery Mode

The button combination that triggers recovery mode varies by manufacturer. The most common combinations are listed below.

Standard method (most Android phones):

Power the device off completely by holding the power button and selecting Power off.
Press and hold the Volume Up button and the Power button simultaneously.
When the manufacturer's logo appears, release the power button but keep holding Volume Up.
Continue holding until the recovery mode screen appears.

Samsung Galaxy:

Most Galaxy models require Volume Up + Bixby button (or Volume Up + Power on models without a Bixby button). The exact combination varies by model year, so if the standard method does not work, search for "[your Galaxy model] recovery mode" to find the correct combination.

Google Pixel:

Power off the device.
Press and hold Volume Down while pressing the Power button.
The Fastboot menu appears. Use the volume buttons to navigate to Recovery mode and press the power button to select it.
If a screen reading No command appears with an Android logo, hold Power and briefly press Volume Up to access the recovery menu.

Running Wipe Data / Factory Reset in Recovery Mode

Recovery mode does not support touch input. Navigate using the volume buttons to move up and down through the menu, and use the power button to select an item.

Use the volume buttons to highlight Wipe data / Factory reset.
Press the power button to select it.
On the confirmation screen, navigate to Factory reset or Yes and press the power button.
Wait for the wipe to complete. A success message appears when finished.
Navigate to Reboot system now and press the power button.

The phone reboots into its initial setup screen, confirming the reset is complete. The process typically takes two to five minutes inside recovery mode itself.

What to Do After the Reset

After the reset completes, the phone returns to its out-of-box state. What you do next depends on why you reset the device.

If you are keeping the phone for yourself:

Select your language and region on the setup screen.
Connect to Wi-Fi.
Sign in with your Google account.
When prompted about restoring from a backup, choose Restore from backup and select the most recent backup from the list.
Allow apps to reinstall automatically. This process can take 15 to 30 minutes depending on how many apps you had.

If you are selling or giving away the phone:

Leave the phone on the initial setup screen, or power it off.
Hand it to the new owner in this state so they can configure it with their own Google account.
Confirm with the buyer that the setup completes without any FRP prompt.

As a final check before handing over the device, go to Settings > Google on the reset phone. If no Google account appears, FRP is not active and the new owner will have no trouble setting it up.

Troubleshooting: Reset Stuck, FRP Lock, and Persistent Slowness

Reset Progress Stops Mid-Way

If the reset progress bar freezes for several minutes, low battery is often the culprit. The system prioritizes power conservation during the wipe process and may stall if the battery is below a safe threshold.

If the battery is below 20%: cancel the reset if possible, charge to at least 50%, and retry.
If the progress bar has not moved in more than 5 minutes at sufficient charge: hold the power button for 10 seconds or more to force a reboot, then attempt the reset again from Settings. If the phone is still unresponsive, boot into recovery mode and run the wipe from there.

Plugging in the charger during the reset is always the safest approach, regardless of current battery level.

FRP Lock Appears After Reset

A screen reading "This device was reset. To continue, sign in with a Google account that was previously synced on this device" means FRP is active.

If you still own the device: enter the email address and password for the Google account that was on the phone before the reset. This unlocks the device and allows normal setup to proceed.

If the phone was sold and the buyer reports FRP: the previous owner did not remove their Google account before resetting. The buyer needs to return the device so the original owner can sign in, remove the Google account through Settings, and perform a fresh reset. If the original owner no longer remembers the Google account password, they must recover it through Google's account recovery process at accounts.google.com before proceeding.

There is no manufacturer-supported workaround for FRP without the original account credentials. This is intentional — FRP exists specifically to prevent unauthorized use of lost or stolen phones.

Phone Still Runs Slowly After Reset

If the phone remains slow after a factory reset, the problem is likely hardware rather than software.

Battery degradation: an old or swollen battery delivers less power to the processor, causing the system to throttle performance. Samsung devices include a diagnostics option in the Samsung Members app. Pixel phones display battery health in Settings > Battery on Android 14 and later.
Storage failure: worn-out flash storage becomes slower over time and, in advanced cases, causes the system to operate erratically. If the phone is several years old and the slowness is severe, consider repair or replacement.

A factory reset clears software bloat, corrupted caches, and misbehaving apps. If those were the cause, performance improves noticeably after the reset. If it does not, the issue lies with the hardware. For a broader overview of common Android problems and their solutions, see the Android Troubleshooting Guide.

Pre-Sale Checklist

Run through every item on this list before you hand the device to its new owner. Skipping even one can lead to a data breach or a phone the buyer cannot use.

Google Drive backup is complete — the timestamp shows today's date.
Google Photos sync is complete — no items are waiting.
LINE backup is complete (if applicable).
Google account has been removed from the device — not signed out, fully removed.
Samsung account has been removed (Galaxy devices only).
SIM card has been removed.
SD card has been removed.
Factory reset has been performed.
No FRP lock appears — confirmed by completing setup with a fresh Google account (or verifying the initial setup screen shows no FRP prompt).
Phone is powered off or showing the initial setup screen before handoff.

The items most likely to cause buyer complaints are the Google account removal and the FRP verification. Confirm both before you consider the process complete.

Frequently Asked Questions

Q. Does a factory reset erase the SD card?

A. It depends on which option you choose during the reset. Some Android models include a checkbox or separate option to also erase the SD card when performing a factory reset. If you want to keep the data on your SD card, make sure this option is not selected. To be safe, physically remove the SD card before starting the reset — then you do not need to worry about the option at all.

Q. Can I restore my apps after a factory reset?

A. Yes, if Google account backup was active before the reset. During the new device setup, choose Restore from backup and select the most recent backup. Android will reinstall most of your apps automatically and restore their data where the app developer has enabled backup. Note that some apps — particularly games — store progress data on their own servers rather than through Android backup. Check each important app individually to understand what will be restored.

Q. What happens to my carrier APN settings after a factory reset?

A. APN settings are cleared along with everything else. If your phone cannot connect to mobile data after setting up a new account, you will need to re-enter the APN settings for your carrier. Most carriers publish their APN details on their support websites, and some provide a configuration profile you can download to set the APN automatically.

Q. Will my contacts survive a factory reset?

A. Contacts synced to your Google account are stored in Google's servers, not only on the phone. After signing into your Google account on the reset device, your contacts restore automatically. Before resetting, confirm that contact sync is enabled by going to Settings > Google > Contacts sync and verifying it is on.

Q. Do I need to follow different steps for a carrier-branded phone from a mobile operator?

A. The core steps are the same, but carrier-branded phones from providers such as Verizon, AT&T, T-Mobile, or regional carriers sometimes have customized Settings menus with different names for the reset option. If you cannot find it by navigating the menus, type "reset" or "factory" into the Settings search bar to locate it quickly.

Summary

A factory reset is a powerful tool that serves two distinct purposes: clearing a device of all personal data before selling or transferring it, and resolving stubborn software problems that cannot be fixed by other means. In both cases, the outcome depends almost entirely on the preparation you do beforehand.

Back up your data to Google Drive, confirm that your photos are synced in Google Photos, remove your Google account from the device (not just sign out — full removal), and take out the SIM and SD cards. With those four steps complete, the reset itself is straightforward: navigate to the reset option in Settings, confirm your PIN, and let the device restart.

When normal software access is not possible, recovery mode provides an alternative path. The button combination to enter recovery varies by model but almost always involves the volume buttons and power button. Inside recovery mode, navigate to Wipe data / Factory reset using the volume keys and confirm with the power button.

After the reset, verify that no FRP lock is present before handing the device to its new owner. FRP is the single most common cause of post-sale disputes, and it is entirely preventable by removing the Google account in advance. For a broader look at Android issues that might lead you to consider a reset, see the Android Troubleshooting Guide.