How to Reset an Iphone Completely
If you want to know how to reset an iphone completely, the short answer is to back up your data first, then use Settings > General > Transfer or Reset iPhone > Erase All Content and Settings. If the iPhone is locked, disabled, or you forgot the passcode, you may need a computer and recovery mode instead.
What a complete iPhone reset does
A complete reset, often called a factory reset, erases the iPhone and returns it to its original setup state. This removes your apps, photos, messages, accounts, settings, and other local data from the device. It does not remove Activation Lock unless you sign out of Apple ID and turn off Find My before erasing, or enter the Apple ID credentials during setup afterward.
People sometimes confuse a few different actions:
- Restart, which turns the phone off and on again.
- Force restart, which helps when the iPhone is frozen.
- Erase All Content and Settings, which is the full reset most people mean.
Before you reset: backup and prep
Before you erase an iPhone, take a few minutes to protect your data. Once the device is wiped, anything not backed up is usually gone.
Do these things first
- Back up your iPhone to iCloud or a computer.
- Save important photos, notes, and files if they are not already synced.
- Sign out of accounts if you can still access the phone.
- Turn off Find My when preparing to sell or give away the device.
- Make sure you know your Apple ID password, especially if you will need to reactivate the phone later.
If you are not sure how to back up first, do that before continuing. A reset is much easier to recover from when you have a recent backup.
How to reset an iPhone completely in Settings
This is the simplest method when the iPhone is unlocked and working normally.
- Open Settings.
- Tap General.
- Scroll down and tap Transfer or Reset iPhone.
- Tap Erase All Content and Settings.
- Review the warning screen carefully, then tap Continue.
- Enter your passcode if prompted.
- Enter your Apple ID password if required to turn off Find My or Activation Lock.
- Confirm the erase and wait while the iPhone restarts and wipes itself.
Depending on the amount of data on the device, the erase process can take several minutes. Keep the iPhone charged or plugged in if possible.
How to reset an iPhone with a computer
If the iPhone will not unlock, is disabled, or you cannot complete the reset from Settings, a computer may help. You can use a Mac with Finder or a Windows PC with Apple Devices or iTunes, depending on your setup.
When this method is useful
- The passcode was forgotten.
- The iPhone is disabled after too many wrong attempts.
- The screen is unresponsive and the normal reset path is unavailable.
- You need to reinstall iOS as part of troubleshooting.
General computer reset process
- Connect the iPhone to the computer with a cable.
- Open Finder on a Mac, or iTunes or Apple Devices on Windows.
- If the phone is recognized normally, choose the iPhone and look for the restore option.
- If the iPhone is not usable, put it into recovery mode.
- When prompted, choose Restore rather than Update if your goal is a full reset.
- Wait for the computer to download and reinstall iOS, then set up the iPhone again.
Important: A computer restore erases the device and reinstalls the system software. If the phone exits recovery mode without restoring, repeat the steps and try again.
If you forgot the passcode
If you forgot the passcode, you generally cannot complete a normal reset from the phone itself. The usual solution is to erase the iPhone through a computer in recovery mode. After the reset, you may still need the Apple ID and password previously used on the device because of Activation Lock.
If you do not remember the Apple ID credentials, recover the account before or after the reset using Apple’s account recovery options. Without that information, the iPhone may stay locked after erasing.
Quick decision guide: which reset method should you use?
| Situation | Best method | Notes |
|---|---|---|
| iPhone is unlocked and working | Settings reset | Fastest and simplest option. |
| Forgot passcode | Computer with recovery mode | Usually required to erase the device. |
| Phone is frozen or stuck | Force restart first, then restore if needed | A force restart is not a full reset. |
| Preparing to sell or give away the phone | Settings reset after backup and sign-out | Make sure Find My and Apple ID are handled correctly. |
Does resetting fix battery problems?
Sometimes, but not usually in the way people expect. Searches like how to reset iphone battery or how to reset battery iphone usually refer to troubleshooting battery drain, inaccurate battery percentage, or performance issues. There is no physical button that resets the battery itself.
A full reset may help if the battery issue is caused by software glitches, background processes, or corrupted settings. However, it will not fix a worn-out battery, damaged hardware, or a battery health problem reported by iPhone itself.
What can help battery-related issues
- Restarting the iPhone.
- Updating iOS.
- Checking Battery Health in Settings.
- Reviewing apps that use excessive power.
- Reducing background activity and location use.
- Letting the battery fully charge and discharge occasionally if percentage readings seem unusual.
If the battery is aging, unusually swollen, or the phone shuts down unexpectedly, resetting will not solve the underlying hardware problem. In that case, battery service may be the real fix.
What to do after the reset
After the iPhone erases, it will restart to the setup screen. From there, you can set it up as new or restore your backup.
Post-reset checklist
- Choose your language and region.
- Connect to Wi-Fi.
- Sign in with your Apple ID if asked.
- Restore from iCloud backup or a computer backup if needed.
- Reinstall apps and verify photos, messages, and contacts.
- Check whether the original issue is gone.
If you reset the phone to solve a problem, test the key behavior before restoring every possible app and setting. That can help you tell whether the issue was software-related or tied to a specific app or account.
Common mistakes to avoid
- Erasing before backing up.
- Forgetting the Apple ID password needed after the reset.
- Assuming a force restart is the same as a factory reset.
- Not turning off Find My when transferring ownership.
- Expecting a reset to fix hardware problems like a failing battery or broken screen.
Frequently Asked Questions About how to reset an iphone completely
How do I reset my iPhone completely?
Go to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings, then follow the prompts. Back up your data first.
What is the difference between reset and erase all content and settings?
In everyday iPhone use, “erase all content and settings” is the full factory reset. A simple reset or restart only reboots the phone and does not delete your data.
Will resetting my iPhone fix battery problems?
It can help if the issue is caused by software, but it will not fix battery wear or hardware damage. Check Battery Health first if the problem is ongoing.
How do I reset an iPhone if I forgot the passcode?
You usually need a computer and recovery mode to erase it. Afterward, you may still need the Apple ID used on the device to complete setup.
Do I need a computer to factory reset an iPhone?
No, not if the iPhone is unlocked and working. You can erase it directly from Settings. A computer is mainly needed when the phone is locked, disabled, or unresponsive.
What should I do before resetting my iPhone?
Back up the device, save any important files, sign out if needed, and make sure you know your Apple ID password. That prevents data loss and setup problems later.
Final takeaway
To reset an iPhone completely, the usual path is Erase All Content and Settings in the Settings app. If the iPhone is locked or you forgot the passcode, use a computer and recovery mode instead. Always back up first, and remember that battery-related searches usually point to troubleshooting, not a true “battery reset.”