Yes, a factory reset erases almost everything on your iPhone

When you perform a factory reset on an iPhone, the device wipes out your photos, messages, contacts, apps, settings, and any files you've stored locally. The reset returns your iPhone to the state it was in when it left the factory — blank, with only Apple's built-in apps installed.

The one major exception: if you've been backing up to iCloud, you can restore those files after the reset completes. But the reset itself removes everything from the phone's storage. There is no undo button once the process finishes, so understanding what gets erased and what survives is critical before you start.

Key Takeaways

  • A factory reset erases all photos, videos, messages, contacts, installed apps, and personal settings stored on your iPhone.
  • Files backed up to iCloud remain safe and can be restored to the phone after the reset, but only if you set up iCloud backup before resetting.
  • The reset does not erase your Apple ID account itself — you will still need your Apple ID password to set up the phone afterward.
  • You should back up your iPhone to iCloud or a computer before resetting if you want to keep any of your data.

What gets erased during a factory reset

A factory reset removes every piece of personal data stored directly on your iPhone. This includes all your photos and videos in the Photos app, text messages and iMessages, email accounts and their stored messages, contacts, calendar events, notes, reminders, and any third-party apps you've downloaded from the App Store.

Your iPhone settings also reset to defaults — Wi-Fi networks you've connected to, Bluetooth pairings, Face ID or Touch ID data, custom keyboard settings, accessibility options, and any customizations you've made to the home screen all disappear. Passwords stored in Safari and apps are erased. Browsing history and saved websites vanish. If you've set up a custom ringtone or notification sound, those are gone too.

The reset also clears out temporary files, app caches, and any data apps have stored on the device. If a game saved your progress locally, that save file is deleted. If you've downloaded music or podcasts directly to the phone, they're removed.

What survives a factory reset

Your Apple ID account itself is not erased — the reset does not delete your account from Apple's servers. However, you will need to enter your Apple ID password when you set up the phone again. If you've forgotten that password, you'll need to reset it before you can use the phone.

Any data you've backed up to iCloud before the reset remains in your iCloud account. This includes photos stored in iCloud Photos, contacts synced to iCloud, calendar events, notes, reminders, and any other data you've configured to sync with iCloud. After the reset completes and you sign back into iCloud, you can restore these backups to your phone.

If you've backed up your iPhone to a Mac or Windows computer using Finder or iTunes, that backup file survives on the computer. You can connect your reset iPhone to that computer and restore from the backup after setup.

How to back up before you reset

The safest approach is to back up your iPhone before resetting. The easiest method is iCloud backup, which happens automatically if you have iCloud enabled. Open Settings, tap your name at the top, select iCloud, then scroll down and tap iCloud Backup. Turn on the toggle, then tap Back Up Now to start an immediate backup. This backup includes photos, messages, contacts, app data, and settings — nearly everything on your phone.

If you prefer to back up to a computer, connect your iPhone to a Mac with a USB cable, open Finder, select your iPhone in the sidebar, and click Back Up Now. On Windows, use iTunes instead. The process is the same: connect the phone, select it in iTunes, and click Back Up.

Either way, wait for the backup to finish completely before you reset. A backup typically takes 5 to 30 minutes depending on how much data you have and your internet speed. You'll see a progress indicator showing when it's done.

The steps to factory reset your iPhone

To reset your iPhone, open Settings and tap General. Scroll to the bottom and select Transfer or Reset. Tap Erase All Content and Settings. Your iPhone will ask you to confirm — tap Erase again. If you have Find My enabled, you'll need to enter your Apple ID password to proceed. The reset then begins and takes 5 to 15 minutes to complete.

During the reset, your iPhone will restart several times. Do not unplug it, force it off, or interrupt the process. Let it run until you see the setup screen asking you to choose a language. At that point, the reset is finished and your data is gone.

If you have a backup saved, you can restore it during setup. When you reach the Apps & Data screen, select Restore from iCloud Backup or Restore from Mac/PC Backup, then sign in and choose which backup to restore. Your photos, messages, contacts, and other backed-up data will return to the phone.

Why you might reset your iPhone

People reset iPhones for several reasons. If your phone is running slowly or crashing frequently, a reset can clear out corrupted files and temporary data that's slowing things down. If you're selling or giving away your iPhone, a reset ensures the new owner gets a blank phone without access to your personal information.

A reset can also fix persistent software problems that restarting alone won't solve — apps that won't open, features that stopped working, or settings that won't save. If you're troubleshooting a serious issue and Apple Support recommends it, a reset is often the last step before considering a hardware problem.

Some people reset their iPhone to start fresh after years of use, removing clutter and old data they no longer need. Others reset before upgrading to a new iPhone, using the backup to transfer everything to the new device.

What to do if you reset without backing up

If you've already reset your iPhone without a backup, your data is not recoverable through normal means. Once the reset completes, the files are gone. However, there are a few narrow options depending on your situation.

If you have an iCloud backup from before the reset, you can restore it. Sign into iCloud during setup, select Restore from iCloud Backup, and choose the most recent backup. This works only if you had iCloud backup enabled before you reset.

If you backed up to a computer but forgot, connect your reset iPhone to that computer now. Open Finder or iTunes, select your iPhone, and look for a backup file. If one exists, you can restore from it. The backup must have been created before you reset for this to work.

If neither backup exists, your data is lost. Third-party data recovery services exist, but they are expensive and success is not may provide, especially on newer iPhones with stronger encryption. The best approach is to prevent this situation by backing up before you reset.

Frequently Asked Questions

Will a factory reset remove viruses or malware from my iPhone?

A factory reset will remove malware that's stored as an app or file on your iPhone. However, if malware is tied to your Apple ID account itself, resetting the phone won't remove it — you'd need to change your Apple ID password and review your account security. For most iPhone malware concerns, a reset combined with a strong password change is effective.

Can I recover photos or messages after a factory reset?

Only if you backed them up before resetting. If your photos were in iCloud Photos and you restore from an iCloud backup, they return. If they were only stored on the phone with no backup, they cannot be recovered. This is why backing up before a reset is so important.

Do I need to know my Apple ID password to reset my iPhone?

Yes, if Find My is enabled on your iPhone. During the reset process, you'll be asked to enter your Apple ID password to confirm. If you don't know it, you'll need to reset your password through Apple's website before you can complete the reset.

What happens to my phone number and carrier information during a reset?

Your phone number and carrier information are stored by your carrier, not on your iPhone. A factory reset does not affect them. After you set up your phone again, your carrier will recognize your SIM card and restore your phone number and service automatically.

Can I reset just part of my iPhone instead of everything?

No, a factory reset erases everything. If you want to remove only specific apps or data, you can delete them individually through Settings without resetting the entire phone. You can also turn off iCloud sync for specific data types if you want to remove them from the cloud without touching the phone itself.