A reset will delete everything stored directly on your iPhone
When you perform a factory reset on an iPhone — technically called an "Erase All Content and Settings" — the phone deletes all the data physically stored on the device itself. This includes photos, videos, messages, contacts, installed apps, settings you've customized, and any files saved locally. After the reset completes, your iPhone returns to the state it was in when it left the factory, with only Apple's built-in apps remaining.
The critical word here is "stored on your iPhone." Many people assume a reset means total data loss, but that's only true for information that lives nowhere else. If you've been backing up to iCloud — Apple's cloud storage service — or syncing data to your computer, much of what you think you're losing is actually still safe elsewhere.
Key Takeaways
- A factory reset erases everything stored directly on the iPhone, including photos, messages, apps, and contacts, but does not touch data backed up to iCloud or a computer.
- If you have an iCloud backup, you can restore your iPhone after the reset and recover most of your data, apps, and settings automatically.
- Photos, messages, and contacts synced to iCloud are not deleted by an iPhone reset because they exist in Apple's cloud storage, not just on the phone.
- Before resetting, check your iCloud backup status in Settings under your name, then iCloud, then iCloud Backup to confirm when the last backup occurred.
What actually gets deleted during a reset
The reset process removes data stored in the iPhone's internal storage — the physical memory inside the phone. This includes every photo and video you took with the camera (unless they're also in iCloud Photos), every text message and email downloaded to the phone, every contact you manually entered, every app you installed beyond what came with iOS, and every password, Wi-Fi network, and setting you configured.
It also clears your browsing history, saved passwords in Safari, and any documents or files you stored in the Files app or other apps' local storage. If you've ever saved a voice memo, a note, or a reminder directly to the phone, those are gone too. The reset is thorough — it's designed to make the phone indistinguishable from a brand-new device.
What does not get deleted: iCloud backups and cloud storage
Data stored in iCloud — Apple's cloud service — survives a reset because it lives on Apple's servers, not on your phone. If you've enabled iCloud Photos, your photos and videos are stored in the cloud and will still be there after the reset. The same applies to iCloud Mail, iCloud Contacts, iCloud Calendar, iCloud Notes, and iCloud Drive. These services sync automatically when you're signed into your Apple ID and connected to Wi-Fi or cellular data.
Third-party cloud services like Google Photos, Dropbox, OneDrive, or Gmail also remain untouched. If you've been uploading photos to Google Photos or storing documents in Dropbox, those files are still in those services after your iPhone reset. The reset only affects data stored locally on the phone itself.
How to check what's backed up before you reset
Before resetting, open Settings and tap your name at the top. Then tap iCloud, then iCloud Backup. You'll see a toggle switch showing whether iCloud Backup is turned on, and below it, the date and time of your last backup. If the backup is recent — within the last day or two — you have a safety net. If it says "Never" or the date is months old, you're at higher risk of losing recent data.
You can also see what's included in the backup by scrolling down on that same screen. It shows which apps are backed up and how much storage the backup uses. If you want to create a fresh backup before resetting, toggle iCloud Backup off and back on, or go to Settings, tap your name, tap iCloud, tap Manage Storage, tap Backups, select your device, and tap Change Options to see exactly what's being backed up.
Restoring your iPhone after a reset
After the reset completes and your iPhone restarts, you'll see the setup screen. When you reach the "Apps & Data" screen, choose "Restore from iCloud Backup" instead of "Set Up as New iPhone." Sign in with your Apple ID, select the backup you want to restore from, and wait. The process can take 30 minutes to several hours depending on how much data is in the backup and your internet speed.
Once restoration finishes, your iPhone will have your photos, messages, contacts, installed apps, and settings back — everything that was in that backup. Apps will reinstall automatically, and your home screen layout will return to how it was. However, any data created or changed after the backup was made will still be lost. This is why backing up regularly matters.
When a reset is necessary and when it's not
People reset iPhones for different reasons. If your phone is running slowly, freezing, or crashing repeatedly, a reset sometimes fixes the problem by clearing corrupted data or conflicting settings. If you're selling or giving away the phone, a reset is essential — it removes all your personal information so the next owner starts fresh. If an app is malfunctioning, you can usually just delete and reinstall that app instead of resetting the whole phone.
If you're experiencing a specific problem — like Wi-Fi not connecting, Bluetooth not working, or a single app crashing — try restarting the phone first (hold the power button, slide to power off, wait 30 seconds, then power back on). Restart solves many problems without erasing anything. A reset is a more drastic step and should be a last resort after other troubleshooting fails.
Frequently Asked Questions
Can I undo a reset after I've already done it?
Not directly — once the reset finishes, the data is gone from the phone. However, if you have an iCloud backup from before the reset, you can restore from that backup and recover most of your data. Go through the setup process again and choose "Restore from iCloud Backup" when prompted. If you don't have a backup, the data cannot be recovered.
Does resetting an iPhone delete my Apple ID or sign me out?
A reset removes you from the phone, but your Apple ID account itself still exists. After the reset, you'll need to sign back in with your Apple ID during setup. If you've forgotten your Apple ID password, you'll need to reset it through Apple's website before you can sign back in on the phone.
Will my apps come back after I restore from a backup?
Yes. When you restore from an iCloud backup, the phone automatically reinstalls all the apps that were on your phone when the backup was created. The apps read from the App Store in the background, so you don't have to manually reinstall each one. This can take a while if you have many apps.
What if I reset my iPhone but don't have a backup?
Without a backup, you've lost the data that was stored only on the phone. Photos, messages, and contacts synced to iCloud will still be there if you sign back in with your Apple ID. But anything stored locally only — like a photo you took but never synced, or a message you received but never backed up — is gone permanently.
Does a reset remove viruses or malware from an iPhone?
A reset removes any malicious software that was installed on the phone, since it deletes everything and reinstalls a clean copy of iOS. However, iPhones are designed to prevent malware installation in the first place, so actual malware on an iPhone is extremely rare. If you think your phone has a problem, a reset is worth trying, but the issue is usually a buggy app or corrupted data, not malware.