To factory reset an Android phone, back up your data to your Google Account first, then reset it from the Settings app; if Settings won't open, most phones can also be reset with their power and volume buttons. A factory reset erases all your data from the phone, and Google's Android Help says some of the steps only work on Android 14 and up.
Here's the catch. Your backup only restores onto a phone running the same Android version or a later one. Google's help says you can't restore a backup from a higher Android version onto a phone running a lower one, and if your new phone is on an older version than the old one, you may get an incomplete transfer. If you plan to restore onto a different phone, check both versions before you erase anything.
What a factory reset erases
Everything on the phone. Google says factory resets are also called formatting or hard resets, and its warning is one line: a factory reset erases all your data from your phone. If you're resetting to fix a problem, Google recommends trying other solutions first. A much smaller step, like clearing cache on Android, sometimes sorts out a slow or misbehaving app without wiping anything.
Google's pages for phones that keep restarting, freeze or run slowly all put a factory reset at the very end of the list, after updates, clearing space, updating apps and closing apps you're not using. That order tells you something: it's the last resort, not the first fix.
Google's get-ready checklist
| Before you reset, as of October 2026 | What it means for you |
|---|---|
| Know your Google Account username and password | Check you can sign in before you erase the phone |
| Back up your data to your Google Account | Turn on Backup or run Back up now, then wait for it to finish |
| Charge and connect | Google lists charging and connecting the phone as part of getting ready |
| Check your manufacturer's support site | Google recommends it for device-specific reset steps |
How to back up Android before a reset
You can back up content, data and settings from your phone to your Google Account, then restore them to the same phone or to some other Android phones. Some of these steps work only on Android 9 and up. To turn on automatic backup:
- Open your phone's Settings app.
- Tap Google services, then All services.
- Choose what to back up: Photos and videos, Device data, or both.
- Turn Backup on.
A Google One backup can take up to 24 hours, and when it's saved you'll see On below the data types you picked. You can back up to 15 GB of storage at no charge with your Google Account, and get more storage through a Google One account.
If you'd rather not wait for the automatic run, back up by hand: open Settings, tap Google, then All services, and under Backup and restore tap Backup, then Back up now. Google's backup collects messages, contacts, app settings and preferences as part of your personal backup.
Two limits are worth knowing. You can't use backup on a personal device set up with a work profile or for work only, or on a company-owned device. And to protect what you back up, Google recommends a PIN, pattern or password screen lock instead of a swipe or Smart Lock.
How your Android backup is protected
Google says all backed-up data, including photos, videos and messages, is encrypted as it moves between your device, Google services and its data centres. Some data is further end to end encrypted with your screen lock PIN, pattern or password. Photos and videos in Google Photos, and MMS media from your carrier, aren't encrypted by your screen lock.
One warning to read twice. Google Drive doesn't have a built-in Backups tab, so you manage backups from your Google Account dashboard. Those backups are managed together, which means choosing Delete all data there permanently deletes all your device and WhatsApp data for that account.
How to factory reset your phone
- Back up, and check you can sign in to your Google Account.
- Charge the phone and keep it connected.
- Open the Settings app and reset from there, which works on most phones.
- If you can't open Settings, use the phone's power and volume buttons instead.
- For the exact menu names and button combination, check your manufacturer's support site.
Google doesn't give one universal menu path, because it varies by maker, which is why it points you to the manufacturer for device-specific steps, as of October 2026.
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Removing one account without a full reset
If all you want is one account off the phone, you don't need to wipe it. When you remove an account, Google says everything tied to that account is deleted from the device, including email, contacts and settings. Open Settings, tap Passwords and accounts (on some phones it's Users and accounts, or Manage accounts), tap the account, then Remove account, and confirm. If it's the only Google Account on the phone, you'll enter your pattern, PIN or password.
Restoring your data afterwards
When you set the phone up again and add your Google Account, you can restore what you backed up by following the on-screen steps. Your photos and videos are already in Google Photos, and the rest comes back during first setup or after a factory reset. Google says the restore can take up to 24 hours to complete fully. Once it's back, it's a good time to organise your apps before the Home screen fills up again.
My verdict on factory resetting Android
I'd treat a factory reset as the last step, not the first. Run Back up now, wait until you see On under your data types, check your Google sign-in works, and only then erase. If you're restoring onto a different phone, make sure it's on the same Android version or newer, or you risk an incomplete transfer you can't undo.
Frequently asked questions
Does a factory reset delete everything on Android?
Yes. A factory reset erases all your data from your phone, so back up to your Google Account first.
How long does an Android backup take?
A Google One backup can take up to 24 hours. When it's saved, On shows below the data types you selected.
Can I restore an Android backup to an older Android version?
No. You can't restore a backup from a higher Android version onto a phone running a lower one, and an older version may give an incomplete transfer.
How do I factory reset Android if Settings won't open?
You can try factory resetting with the phone's power and volume buttons. Check your manufacturer's support site for the exact steps.
Is my Android backup encrypted?
Yes, in transit, and some data is also encrypted with your screen lock. Photos and videos in Google Photos and carrier MMS media aren't encrypted by your screen lock.
