The fastest way to back up your iPhone is iCloud, which runs automatically in the background
iCloud backup happens without you doing anything once you turn it on. Your iPhone backs up to Apple's servers whenever it is plugged in, locked, and connected to Wi-Fi — usually overnight. You can also back up to your Mac or Windows computer using a cable, which gives you more control over what gets saved and where it lives.
Both methods save your photos, messages, app data, settings, and passwords. The main difference is that iCloud backups live on Apple's servers (you can access them from any device), while computer backups stay on your own machine. Most people use iCloud because it requires no cable and no thinking. If you have a lot of photos or videos, or if you want a backup that never touches the internet, a computer backup is worth the extra step.
Key Takeaways
- iCloud backup turns on in Settings > [Your Name] > iCloud > Backup, and then runs automatically when your phone is plugged in, locked, and on Wi-Fi.
- You get 5 GB of iCloud storage free; photos, videos, and app data count toward this limit, so you may need to pay for more storage if you have many photos.
- Computer backups use the Finder app on Mac (or iTunes on Windows) and save everything to your computer without using iCloud storage.
- A computer backup is faster for large amounts of data and does not depend on your internet connection or iCloud storage limits.
- You can use both methods at the same time — iCloud for convenience and a computer backup as a second copy.
How to set up iCloud backup on your iPhone
Open Settings and tap your name at the top. Then tap iCloud. Scroll down and tap Backup. Turn on iCloud Backup by tapping the toggle switch. Your iPhone will start backing up the next time it is plugged in, locked, and connected to Wi-Fi.
You can also force a backup right now if you want to. In that same Backup screen, tap "Back Up Now" at the bottom. Your phone will back up immediately as long as it is connected to Wi-Fi. The backup usually takes a few minutes, depending on how much data you have.
Check how much iCloud storage you are using by going to Settings > [Your Name] > iCloud > Manage Storage. If you are close to your 5 GB limit, you can delete old backups or pay for more storage. To delete a backup, tap "Backups" in that same screen, tap the name of your device, and tap "Delete Backup."
How to back up your iPhone to a Mac
Plug your iPhone into your Mac with a USB cable. Open Finder and look for your iPhone in the sidebar on the left. Click it. At the top of the window, you will see options for backup. Click "Back Up Now" to start a backup right away.
If you want backups to happen automatically, check the box that says "Automatically back up when iPhone is connected." Your Mac will then back up your phone every time you plug it in. The backup saves to your Mac's hard drive, not to iCloud, so it does not use any of your iCloud storage.
You can also choose what to back up. In the same window, look for "Backup" options and you can select which apps and data to include. Most people leave everything checked, but if you want to save space on your Mac, you can uncheck items you do not need backed up.
How to back up your iPhone to a Windows computer
Plug your iPhone into your Windows computer with a USB cable. Open iTunes (or the Music app if you are on Windows 11). Your iPhone should appear in the left sidebar. Click it.
Under "Backups," click "Back Up Now." iTunes will back up your phone to your computer. If you want automatic backups, check the box that says "Automatically back up when this iPhone is connected." After that, every time you plug in your phone, a backup will start on its own.
Like the Mac method, this backup lives on your computer and does not use iCloud storage. The first backup takes longer than later ones because it has to copy everything. Later backups are faster because iTunes only saves what has changed.
What gets backed up and what does not
iCloud and computer backups save most of your data: messages, photos, videos, contacts, calendar events, notes, reminders, health data, home screen layout, app data, and passwords stored in Keychain. They also save your settings, like which apps you have and how you organized them.
Some things do not get backed up. Music and podcasts you bought from Apple are not included because Apple can re-download them. Apps themselves are not backed up — instead, when you restore from a backup, your phone re-downloads them from the App Store. Photos and videos in iCloud Photo Library are backed up separately, not as part of your iCloud backup. If you use iCloud Photo Library, turn it on in Settings > [Your Name] > iCloud > Photos.
Data from apps that are no longer available in the App Store may not restore. If you delete an app and then restore from a backup, the app will not come back because it is no longer in the store. The app's data will be saved, but you will not be able to use it without the app itself.
When to use iCloud backup versus computer backup
Use iCloud backup if you want something that works without thinking. It runs in the background, you do not need a cable, and you can restore your phone from any device. iCloud backup is also useful if you travel or do not have regular access to a computer.
Use a computer backup if you have a lot of photos and videos and do not want to pay for extra iCloud storage. Computer backups are also faster for large amounts of data because they use your USB cable instead of your internet connection. If your internet is slow, a computer backup will finish much sooner.
The best approach is to use both. iCloud backup handles your daily data, and a computer backup gives you a second copy that lives on your own machine. If something goes wrong with iCloud, you still have a backup on your computer. If your computer fails, you still have iCloud.
How to restore your iPhone from a backup
If you get a new iPhone or need to erase and restore your current one, you can bring back all your data from a backup. During the setup process on a new iPhone, you will see a screen that says "Apps & Data." Tap "Restore from iCloud Backup" and sign in with your Apple ID. Choose which backup you want to restore from — usually the most recent one — and your phone will download all your data.
If you backed up to a computer, plug your new or erased iPhone into that same computer with a USB cable. Open Finder (or iTunes on Windows) and click your iPhone in the sidebar. Click "Restore Backup" and choose the backup you want. Your phone will restore from that backup instead of from iCloud.
Restoring takes time if you have a lot of data. iCloud restores can take an hour or more depending on your internet speed. Computer restores are usually faster. Do not unplug your phone or close the window until the restore is finished.
Frequently Asked Questions
How much does iCloud storage cost?
You get 5 GB free. If you need more, Apple charges $0.99 per month for 50 GB, $2.99 per month for 200 GB, or $9.99 per month for 2 TB. You can see your current usage and upgrade in Settings > [Your Name] > iCloud > Manage Storage.
Can I back up my iPhone without Wi-Fi?
iCloud backup requires Wi-Fi. Computer backups use a USB cable and do not need Wi-Fi at all. If you do not have reliable Wi-Fi, a computer backup is a better choice.
What happens if I turn off iCloud backup?
Your existing backups stay on Apple's servers, but new backups will not be created. If you turn it back on later, backups will start again. Your old backups will remain until you delete them or until they are automatically deleted after 180 days of inactivity.
Can I back up to both iCloud and my computer at the same time?
Yes. You can have iCloud backup on and also plug your phone into your computer for a backup. Both will work independently. This gives you two copies of your data in two different places.
How often should I back up my iPhone?
iCloud backs up automatically every day if your phone is plugged in and on Wi-Fi. Computer backups happen whenever you plug in your phone if you have automatic backups turned on. For safety, aim for at least one backup per week, but automatic backups are better because you do not have to remember.