Resetting an iPhone 15 to factory settings means erasing everything on the phone and returning it to the state it was in when new. First, back up your data to iCloud or to a computer, then sign out of your Apple ID and turn off Find My iPhone. Next, go to Settings, choose General, then Transfer or Reset iPhone, and tap Erase All Content and Settings. Confirm with your passcode and Apple ID password, and wait for the phone to erase and restart. If the phone is locked or unresponsive, use Recovery Mode with a Mac or PC to complete the reset.
Tutorial – How To Reset iPhone 15 To Factory Settings
This section shows the exact steps to safely and completely reset your iPhone 15, including backups, signing out of services, and using the built-in erase feature. Follow each step in order to avoid losing data or getting stuck with Activation Lock.
Step 1, Back up your iPhone
Create a current backup to iCloud or to your computer so you can restore photos, messages, and apps later.
Back up to iCloud by tapping Settings, your name, iCloud, iCloud Backup, and Back Up Now. If you prefer a computer, connect the iPhone to a Mac or PC, open Finder or iTunes, choose the device, and select Back Up Now. Make sure the backup finished before you proceed.
Step 2, Unpair Apple Watch and disconnect accessories
If you use an Apple Watch or Bluetooth accessories, unpair them so they do not remain linked to the phone.
Open the Watch app on your iPhone and tap your watch, then Unpair Apple Watch. For other accessories, go to Settings, Bluetooth, and Forget This Device for each paired item. Unpairing helps prevent pairing issues when you set up a new device.
Step 3, Sign out of iCloud and turn off Find My iPhone
Sign out of your Apple ID and disable Find My iPhone to prevent Activation Lock when someone else tries to activate the device.
Go to Settings, tap your name, scroll down, and choose Sign Out. You will need your Apple ID password to turn off Find My iPhone. This step is crucial if you plan to sell or give away the phone.
Step 4, Remove any SIM card or carrier locks
Take out your SIM card if you are transferring it to a new device or if you are selling the phone without service.
Use the SIM eject tool or a small paperclip to open the SIM tray, then remove the SIM card. If your phone is carrier locked, contact the carrier to discuss unlocking options before handing the phone to a new owner.
Step 5, Erase All Content and Settings from Settings
Use the built-in erase function to remove all personal data and reset system settings to factory defaults.
Open Settings, tap General, then Transfer or Reset iPhone, and tap Erase All Content and Settings. You will be asked to enter your passcode and Apple ID password to confirm the erase. The phone will show a progress bar and then restart as a new device.
Step 6, Enter Apple ID and device passcodes to confirm
Provide your passcode and Apple ID password when prompted so the device can complete the reset and disable Activation Lock.
If you forget your Apple ID password, use the Apple ID account recovery process before erasing. Without these credentials, the reset will not remove Activation Lock and the phone will remain tied to the account.
Step 7, Use Recovery Mode if the iPhone is unresponsive or locked
If your iPhone 15 is frozen, disabled, or stuck on the Apple logo, put it into Recovery Mode and use a Mac or PC to restore it.
Connect the iPhone to a computer, open Finder or iTunes, and force restart your device with the volume up, volume down, then press and hold the side button until Recovery Mode appears. Choose Restore when prompted; this downloads and installs the latest iOS and erases the device.
Step 8, Restore from backup or set up as new
After the reset and restart, choose to restore your data from iCloud or a computer backup, or set up the iPhone as a new device.
During setup, follow the on-screen steps to sign in with your Apple ID, enable services, and restore your backup if you have one. Restoring may take time depending on your backup size and internet speed.
After you complete the reset, your iPhone 15 will restart as if it were new out of the box. All personal data, apps, and settings will be removed, and the device will return to the setup screen. If you signed out of iCloud and disabled Find My iPhone, the phone will not be tied to your Apple ID and can be handed off or sold.
How To Reset iPhone 15 To Factory Settings — Tips
- Back up to both iCloud and a computer for extra safety, especially if your iCloud storage is limited.
- Make sure your iPhone has at least 50 percent battery or plug it into power before starting the erase process.
- If you plan to sell the phone, perform a manual check after reset to confirm it boots to the setup screen.
- Keep your Apple ID and password handy; you will need them to disable Activation Lock and complete the reset.
- If your iPhone is part of a business or school plan, contact the administrator before erasing to remove any device management profiles.
- Use Recovery Mode only when the normal erase steps fail, because Recovery Mode will reinstall iOS and can take longer.
- After erasing, remove the device from your list of trusted devices in your Apple ID account settings online.
How To Reset iPhone 15 To Factory Settings — Frequently Asked Questions
What happens to my photos and messages after a factory reset?
A factory reset deletes all photos, messages, and app data on the iPhone. If you backed up to iCloud or a computer, you can restore those items. Without a backup, deleted data is not recoverable.
Do I need to disable Find My iPhone before resetting?
Yes, you should disable Find My iPhone by signing out of your Apple ID so Activation Lock is turned off. If you do not, the device will stay linked to your Apple ID and a new owner will be blocked from activating it.
Can I reset the iPhone 15 without a computer?
Yes, you can erase the phone directly from Settings if it is responsive. Use a computer and Recovery Mode only if the iPhone is disabled or unresponsive.
How long does the factory reset process take?
The reset itself usually takes several minutes to erase data and reinstall system files. Restoring from a backup may take longer depending on backup size and internet speed. Expect anywhere from five minutes to over an hour.
Will resetting the iPhone remove carrier locks?
No, a factory reset does not unlock carrier restrictions. If the device is carrier locked, contact the carrier to request unlocking before selling or giving away the phone.
What if I forget my Apple ID password before resetting?
If you forget your Apple ID password, use the Apple ID account recovery process at appleid.apple.com or on another trusted device. Do not erase the phone until you can sign out of iCloud, or the device may remain Activation Locked.
Can I undo a factory reset once it starts?
No, once the erase begins and files are deleted, you cannot stop the process. You can restore from a backup after the reset, but the erased state itself cannot be reversed.
Summary
- Back up your iPhone
- Unpair Apple Watch and accessories
- Sign out of iCloud and disable Find My
- Remove SIM card if needed
- Erase All Content and Settings
- Enter passcodes and Apple ID credentials
- Use Recovery Mode if necessary
- Restore from backup or set up as new
Conclusion
Resetting an iPhone 15 to factory settings is a straightforward process when you prepare properly. Think of it like packing a suitcase before a long trip. If you do not pack important items first, you will regret it later. The backup step is your life jacket. It keeps your photos, contacts, and messages safe so you can get them back after the reset. Signing out of iCloud and turning off Find My iPhone is like taking your name off a mailbox before you move. It prevents future headaches for you and the next owner.
If you run into problems, the Recovery Mode route works as a powerful repair tool. It is like a mechanic’s toolbox. Use it when the usual steps fail. Keep your Apple ID and passwords in a secure place before you start. For business or managed devices, check policies first to avoid removing profiles that you need. After the reset, test the phone by going through the setup screen. If it boots to the welcome screen and no Activation Lock appears, you are done.
Want to learn more? Check Apple’s official support pages for the latest iOS changes and step-by-step guides. If you are selling or donating your phone, take photos and remove the SIM card before giving it away. If you prefer personal help, an Apple Store or authorized service provider can walk you through the process. By following these steps and using the tips above, you can confidently perform How To Reset iPhone 15 To Factory Settings and leave no trace behind while keeping your data safe.
Matt Jacobs has been working as an IT consultant for small businesses since receiving his Master’s degree in 2003. While he still does some consulting work, his primary focus now is on creating technology support content for SupportYourTech.com.
His work can be found on many websites and focuses on topics such as Microsoft Office, Apple devices, Android devices, Photoshop, and more.