How Long Does It Take to Factory Reset a Phone?

Quick Answer

5–30 minutes for the factory reset process itself. iPhones generally complete a reset in 5–15 minutes, while Android devices take 10–30 minutes depending on the manufacturer and storage capacity. The reset erases all data and restores the phone to its original software state. Budget an additional 30–60 minutes for setting up the phone again, including restoring a backup, signing into accounts, and re-downloading apps.

Reset Time by Device

Device	Reset Time	Notes
iPhone (any model)	5–15 minutes	Faster with less storage used
Samsung Galaxy	10–20 minutes	May include Samsung-specific reset steps
Google Pixel	5–15 minutes	Clean Android resets quickly
OnePlus	10–15 minutes	OxygenOS adds minimal overhead
Older/budget Android	15–30 minutes	Slower processors take longer

iPhone Factory Reset Steps

1. Back up your data via iCloud (Settings > [Your Name] > iCloud > iCloud Backup) or connect to a computer and back up through Finder (Mac) or iTunes (Windows). Backup takes 10–60 minutes depending on data size and internet speed.
2. Sign out of iCloud by going to Settings > [Your Name] > Sign Out. This disables Activation Lock so the phone can be set up fresh.
3. Start the reset: Go to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.
4. Confirm and wait. The phone will display an Apple logo with a progress bar for 5–15 minutes.
5. Phone restarts to the "Hello" setup screen.

Android Factory Reset Steps

1. Back up your data via Google (Settings > System > Backup). Ensure "Back up to Google Drive" is enabled. Photos should be synced to Google Photos.
2. Remove your Google account if you want to transfer the phone to someone else. This disables Factory Reset Protection (FRP).
3. Start the reset: Go to Settings > System > Reset Options > Erase All Data (Factory Reset). The exact menu path varies by manufacturer.
4. Confirm and wait. The phone will reboot and display the manufacturer's logo with a progress indicator for 10–30 minutes.
5. Phone restarts to the initial setup wizard.

What Gets Erased

A factory reset removes:

• All apps and app data
• Photos, videos, and music stored on the device
• Contacts, messages, and call history
• Saved Wi-Fi passwords
• Wallpaper, ringtones, and display settings
• All accounts signed into the device

A factory reset does not erase:

• Data stored on a removable SD card (Android only, unless you select the option to format it)
• Data already backed up to iCloud, Google Drive, or other cloud services
• Your cellular carrier settings and phone number (tied to the SIM/eSIM)
• The operating system itself (the phone resets to the current OS version, not the version it shipped with)

Setup Time After Reset

Setup Step	Time
Language, Wi-Fi, and initial configuration	5–10 minutes
Restore from iCloud/Google backup	15–45 minutes
Re-download apps	10–30 minutes (runs in background)
Sign into individual apps	10–20 minutes
Total setup time	30–60 minutes

Factors That Affect Reset Time

• Storage used: A phone with 200 GB of data takes longer to erase than one with 30 GB, though modern phones use encryption-based erasure (destroying the encryption key) which makes the difference smaller.
• Phone age and processor: Older phones with slower processors and storage chips take longer at every step.
• OS version: Make sure your phone is running the latest OS before resetting. Outdated software can cause the reset to stall.
• Encryption: Modern iPhones and Android phones (Android 10+) encrypt data by default. The reset invalidates the encryption keys, making data unrecoverable without lengthy overwriting.

When to Factory Reset

• Selling or giving away your phone: Always reset to protect your personal data.
• Persistent software issues: Freezing, crashing, or severe battery drain that survives a regular restart.
• Malware concerns: If you suspect your phone has been compromised.
• Starting fresh: Accumulated app clutter and background processes slowing performance.

Important: Back Up First

A factory reset is irreversible. Any data not backed up to the cloud or a computer will be permanently lost. Before proceeding:

• Verify your iCloud or Google backup is current and complete
• Save any photos or files not synced to the cloud
• Note down any two-factor authentication app codes (Google Authenticator, Authy)
• Ensure you remember your Apple ID or Google account password (you'll need it to set up the phone again)