What "completely clear" means for an iPhone

Completely clearing an iPhone means erasing all your personal data — photos, messages, contacts, apps, settings — and returning the phone to the state it was in when it left the factory. This is different from just deleting a few photos or clearing your browser history. When you completely clear an iPhone, nothing of yours remains on the device.

People do this for several reasons: selling or giving away the phone, fixing a serious software problem, or starting over after a security concern. The process itself takes about 15 to 30 minutes, though the actual erasing can take longer depending on how much data is on the phone.

Apple calls this process a "factory reset" or "erase all content and settings". The result is the same — a blank iPhone that requires you to set it up again from scratch, just as if you had opened the box for the first time.

Key Takeaways

  • Completely clearing an iPhone removes all your photos, messages, apps, and settings permanently, leaving the phone in factory condition.
  • You must know your Apple ID password before you start, because the phone will ask for it during setup after the erase.
  • The fastest method is to go to Settings > General > Transfer or Reset > Erase All Content and Settings, which takes about 15 minutes.
  • If you cannot remember your Apple ID password, you can reset it through Apple's website before you erase, or the phone will guide you through recovery during setup.
  • After erasing, the phone is blank and ready to be set up by you or someone else, or to be sold or given away.

Before you erase: what you need to do first

Back up your data if you want to keep it. If you are erasing because you are selling the phone or giving it away, you do not need a backup. But if you are erasing to fix a problem and plan to use the phone again, save your photos, messages, and other data first.

The easiest way to back up is through iCloud. Go to Settings > [Your Name] > iCloud > iCloud Backup, and tap "Back Up Now". This saves your photos, messages, contacts, and app data to Apple's servers. When you set up the phone again, you can restore from this backup and get everything back.

You also need to know your Apple ID password. This is the email and password you use to sign into the App Store and iCloud. If you do not remember it, go to iforgot.apple.com on a computer or another device and reset it before you erase the phone. If you erase without knowing the password, the phone will ask for it during setup, and you can reset it then — but it is easier to do it beforehand.

If the iPhone is linked to a family member's account or a workplace account, contact them before erasing. Some phones have restrictions that prevent erasing without permission from the account owner.

The step-by-step process to erase your iPhone

Open the Settings app on your iPhone. Tap "General" near the top of the list. Scroll down and tap "Transfer or Reset" (on older iPhones, this may say "Reset" instead). Tap "Erase All Content and Settings".

The phone will ask you to enter your Apple ID password. Type it in. Then it will ask you to confirm that you want to erase — this is your final note to stop. Tap "Erase" again to confirm.

The phone will now begin erasing. You will see a progress bar. Do not turn off the phone or unplug it during this time. The process usually takes 5 to 15 minutes, though it can take longer if the phone has a lot of data on it. When it finishes, the iPhone will restart and show the setup screen, just like a brand new phone.

At this point, the erase is complete. All your data is gone. You can now set up the phone as a new device, restore from a backup you made earlier, or hand the phone to someone else to set up.

What happens if you forget your Apple ID password

If you reach the password screen during the erase and cannot remember your password, tap "Do not have access to your Apple ID?" at the bottom. The phone will guide you through resetting your password using your recovery email or phone number.

This process takes a few minutes. Apple will send a code to your email or phone, you enter the code, and then you create a new password. Once you have the new password, go back and complete the erase.

If you do not have access to your recovery email or phone number, the process is more complicated. You will need to contact Apple Support or visit an Apple Store in person. They can verify your identity and help you regain access to your account. This can take a day or more, so it is worth resetting your password ahead of time if you know you are going to erase.

After the erase: setting up the phone again

Once the erase is complete, the iPhone will show the "Hello" setup screen. If you are keeping the phone, you can set it up as a new device or restore from your backup. If you are giving it away or selling it, you can stop here and hand it to the new owner — they will set it up with their own Apple ID.

If you want to restore your data, tap "Restore from iCloud Backup" during setup and sign in with your Apple ID. Choose the backup you made before erasing, and the phone will read your photos, messages, contacts, and apps. This can take 30 minutes to an hour depending on how much data you have and your internet speed.

If you are selling or giving away the phone, do not set it up yourself. The new owner should see the setup screen when they turn it on. If they do not, the phone may still be linked to your Apple ID, which will prevent them from using it. In that case, go to iCloud.com, sign in, find the phone under "Find My", and remove it from your account.

What gets erased and what does not

Everything on the phone gets erased: all photos and videos, all messages and emails, all contacts, all apps you downloaded, all your settings and preferences, and all files stored on the device. The only thing that remains is the operating system itself — the software that makes the iPhone work. This is necessary for the phone to function at all.

One thing that does not get erased is your Apple ID's connection to the phone. This is a security feature called set up Lock. Even after erasing, the phone remembers which Apple ID it was linked to. This prevents someone from stealing a phone, erasing it, and using it as their own. When the phone finishes erasing and shows the setup screen, it will ask for the Apple ID password before allowing anyone to set it up.

If you are selling or giving away the phone, you must remove it from your Apple ID account before handing it over. Go to iCloud.com on a computer, sign in, click "Find My", select the phone, and choose "Remove from Account". This removes the set up Lock so the new owner can set it up with their own Apple ID.

Troubleshooting if the erase gets stuck

If the phone freezes during the erase or the progress bar stops moving, wait 10 minutes. Sometimes the erase is still working even though it looks stuck. If nothing changes after 10 minutes, force restart the phone by quickly pressing and releasing the Volume Up button, then quickly pressing and releasing the Volume Down button, then pressing and holding the Side button until you see the Apple logo appear. This takes about 10 seconds.

After the restart, the phone may finish erasing on its own, or it may show an error message. If it shows an error, try the erase process again from Settings. If it fails a second time, the phone may have a hardware problem or a software issue that requires professional help. Contact Apple Support or visit an Apple Store.

If the phone will not turn on at all, or if you cannot access Settings, you can erase it using a computer. Connect the iPhone to a Mac or Windows PC with a USB cable, open Finder (Mac) or iTunes (Windows), select the phone, and choose "Restore". This erases the phone and reinstalls the operating system. You will need the Apple ID password when the phone finishes.

Frequently Asked Questions

Will erasing my iPhone remove it from my family plan or work account?

Erasing the phone removes the data, but not the account connection. If the phone is part of a family plan or managed by your workplace, the account owner will still see it listed in their management tools. You or the account owner must remove the phone from the account separately through iCloud.com or the management app.

Can I erase my iPhone if it is locked with a passcode?

Yes. You can erase it through Settings even if it has a passcode. You will need to enter the passcode to open Settings, but once you do, the erase process works normally. You will also need your Apple ID password when the erase is complete.

What if I erase my iPhone and then change my mind?

If you made a backup before erasing, you can restore from it. During setup after the erase, choose "Restore from iCloud Backup" and select the backup you made. This brings back all your photos, messages, and apps. If you did not make a backup, the data is gone permanently.

How long does it take to erase an iPhone?

The erase itself usually takes 5 to 15 minutes. If your phone has a lot of data on it, it can take up to 30 minutes. After the erase finishes, the phone will restart and show the setup screen. The entire process from start to finish is usually done in 20 to 30 minutes.

Can someone recover my data after I erase my iPhone?

No. Once you erase an iPhone, the data is overwritten and cannot be recovered. This is why erasing is a safe way to prepare a phone for sale or disposal. The only way someone could get your data back is if you made a backup to iCloud or a computer — in that case, they would need your Apple ID password to restore from the backup.