How to Back Up Your iPhone Using iCloud

What iCloud backup does and how to set it up

iCloud backup stores your iPhone's photos, messages, contacts, settings, and app data on Apple's servers so you can restore everything if your phone is lost, stolen, or broken. The backup happens automatically when your phone is plugged in, locked, and connected to Wi-Fi — you do not have to do anything after the first setup. Every iPhone comes with 5 GB of free iCloud storage, which is enough for most people unless you have thousands of photos or many large apps.

To turn on iCloud backup, open Settings on your iPhone, tap your name at the top, then tap iCloud. Scroll down and tap iCloud Backup. Toggle the switch to on (it will turn green). Your phone will start backing up immediately if it meets the conditions: plugged in, locked, and on Wi-Fi. The first backup can take 30 minutes to several hours depending on how much data you have.

You can check whether your backup is working by going back to Settings > [Your Name] > iCloud > iCloud Backup and looking for the date and time of the last backup. If it says "Back Up Now" in blue text, you can tap it to start a backup right away without waiting for the automatic schedule.

Key Takeaways

iCloud backup turns on in Settings under your name, then iCloud, then iCloud Backup — toggle the switch green and your phone backs up automatically when plugged in, locked, and on Wi-Fi.
Your first backup may take 30 minutes to several hours, and you can watch the progress by staying in the iCloud Backup settings screen.
Free iCloud storage is 5 GB, which covers most backups, but you can check how much space you are using in Settings > [Your Name] > iCloud > Manage Storage.
If your backup keeps failing, restart your iPhone, make sure you are on Wi-Fi (not cellular), and check that your Apple ID password is correct.
You can restore from an iCloud backup during iPhone setup by signing in with your Apple ID and choosing "Restore from iCloud Backup" instead of "Set Up as New iPhone."

Checking how much storage your backup uses

iCloud gives you 5 GB free, but your backup might be larger than that if you have many photos, videos, or apps. To see exactly how much space your backup is taking, go to Settings, tap your name, tap iCloud, then tap Manage Storage. You will see a list of apps and how much space each one uses in your backup.

If your backup is larger than 5 GB, iCloud will not back up until you either delete data from your phone or pay for more storage. Apple offers 50 GB for 99 cents per month, 200 GB for $2.99 per month, and 2 TB for $9.99 per month. The payment is charged to your Apple ID and you can cancel anytime in Settings > [Your Name] > Subscriptions.

Before you pay, check what is taking up space. Photos and videos are usually the biggest culprits. You can reduce backup size by deleting old photos from your phone, turning off photo backup for certain apps, or using iCloud Photos instead (which stores originals in iCloud but keeps lower-quality versions on your phone to save space).

Why your backup might be stuck or failing

The most common reason a backup does not complete is that your iPhone is not meeting one of the three conditions: it must be plugged in, locked (screen off), and connected to Wi-Fi. If your phone keeps unlocking or you are using cellular data instead of Wi-Fi, the backup will pause and restart later. Plug your phone in, turn off the screen, and make sure you are on a reliable Wi-Fi network.

If your backup has been stuck for more than a few hours, restart your iPhone. Hold down the power button and volume button together until the power-off slider appears, then drag it to turn off the phone. Wait 10 seconds, then hold the power button again until you see the Apple logo. After the restart, plug the phone in, lock it, and connect to Wi-Fi again.

Another common issue is an outdated Apple ID password. If you recently changed your Apple ID password on another device, your iPhone might not know about it yet. Go to Settings > [Your Name] and look for a message asking you to update your password. Tap it and enter your new password. After that, try backing up again.

What happens if you restore from an iCloud backup

When you restore from an iCloud backup, your new or reset iPhone downloads everything from that backup: your photos, messages, contacts, calendar events, app data, and settings. The restore happens during the initial setup process, before you start using the phone normally. It can take 30 minutes to several hours depending on the size of your backup and your internet speed.

During a restore, your phone will ask you to sign in with your Apple ID and then choose "Restore from iCloud Backup" on the Apps & Data screen. You will see a list of available backups (usually the most recent one is selected automatically). Tap the one you want and wait for the download to finish. Do not unplug the phone or turn it off during this time.

After the restore completes, your phone will restart and you will see all your data. Some apps may take a few minutes to download from the App Store in the background. Messages and photos usually appear immediately, but larger apps like games or photo editors may take longer.

iCloud backup versus other backup methods

iCloud backup is automatic and requires no action from you, but it only works when your phone is plugged in, locked, and on Wi-Fi. If you want to back up manually or more frequently, you can use a computer instead. Plug your iPhone into a Mac or Windows PC, open Finder (Mac) or iTunes (Windows), and click Back Up Now. This creates a backup on your computer that includes everything iCloud does, plus some additional data like health records and HomeKit settings.

A computer backup is useful if you want a copy stored locally (not on Apple's servers) or if you need to back up more often than the automatic iCloud schedule allows. However, you have to remember to plug in your phone and start the backup manually each time. Most people use iCloud for daily automatic backups and a computer backup as a second copy for extra safety.

iCloud backup and computer backup are not the same thing — they store data in different places and restore different amounts of information. You can use both at the same time without any conflict. If your phone is lost or stolen, iCloud backup is faster because you can restore to a new phone immediately without needing a computer.

Turning off iCloud backup and what to know before you do

If you turn off iCloud backup, your phone will stop backing up automatically. Any new data you create after you turn it off will not be saved to iCloud. However, your existing backups will stay on Apple's servers for 180 days before they are deleted. If you turn iCloud backup back on within that time, your old backups are still there.

To turn off iCloud backup, go to Settings > [Your Name] > iCloud > iCloud Backup and toggle the switch to off (it will turn gray). A message will ask whether you want to keep or delete your existing backup. If you tap Delete, your backup is removed immediately and cannot be recovered. If you tap Keep, the backup stays on iCloud for 180 days.

Most people should leave iCloud backup on because it requires no action and protects your data automatically. Turn it off only if you are running out of iCloud storage and do not want to pay for more, or if you prefer to back up using a computer instead. If you are unsure, keep it on — the 5 GB free storage is usually enough.

Frequently Asked Questions

Does iCloud backup include my text messages and call history?

Yes, iCloud backup includes all your text messages, iMessage conversations, and call history. When you restore from a backup, these will appear on your new phone exactly as they were. Note that iCloud backup does not include SMS messages older than 30 days on some older iOS versions, but current versions keep all messages.

Can I back up my iPhone while I am using it?

No, iCloud backup only works when your phone is locked (screen off). If you unlock your phone while a backup is in progress, the backup pauses and resumes later when you lock it again. Computer backups also require your phone to be connected and can pause if you use the phone during the process.

What if I do not have Wi-Fi at home?

You can back up using any Wi-Fi network — at work, a coffee shop, a library, or a friend's house. Just plug in your phone, lock it, and connect to the Wi-Fi. If you only have cellular data, you cannot use iCloud backup, but you can back up using a computer connected to the internet instead.

Will my backup include apps I have deleted?

Your backup includes the data from deleted apps, but not the apps themselves. When you restore, the App Store will download the apps again automatically. If an app is no longer available in the App Store, it will not be reinstalled, but your data from that app may still be restored if the new version of the app can read it.

How often does iCloud backup run?

iCloud backup runs once per day when your phone is plugged in, locked, and on Wi-Fi. It does not run on a set schedule — it just runs once daily whenever those conditions are met. If you want to back up more often, you can tap "Back Up Now" manually in Settings, or use a computer backup instead.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.