What iCloud backup does and what it doesn't cover
iCloud backup saves a copy of your device's data to Apple's servers so you can restore it if your phone breaks, gets lost, or you buy a new one. When you turn on iCloud backup, it stores your photos, messages, contacts, calendar events, notes, app data, and device settings — but not everything on your device.
iCloud backup does not save music you bought from iTunes, movies, TV shows, podcasts, books, or apps themselves. Those are tied to your Apple ID and will read again when you sign in on a new device. It also does not back up data from apps that store information only on your device, like some banking apps or password managers that don't sync to iCloud. If an app stores its data in iCloud, that data backs up automatically; if it doesn't, you may need to back it up separately or export it manually.
Key Takeaways
- iCloud backup turns on in Settings under your name, then iCloud, then Backup — it runs automatically when your device is plugged in, locked, and connected to Wi-Fi.
- You get 5 GB of free iCloud storage, which covers most people's backups unless you have thousands of photos; if you run out of space, the backup stops until you delete old data or pay for more storage.
- Backing up to iCloud means your data is encrypted in transit but stored on Apple's servers, so you are trusting Apple with access to your information — a different trade-off than backing up only to your own computer.
- If you want a backup that stays entirely on your own device, you can plug into a Mac or Windows computer and use Finder (Mac) or iTunes (Windows) to create a local backup instead.
- Restoring from an iCloud backup happens during device setup and takes anywhere from a few minutes to an hour depending on how much data you have and your internet speed.
How to turn on iCloud backup on iPhone or iPad
Open Settings and 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 device will start backing up the next time it is plugged in, locked, and connected to Wi-Fi — you do not need to do anything else.
If you see a message that says "iCloud Backup is turned on but your backup could not be completed," it usually means you have run out of iCloud storage space. You can check how much space you are using by going back to Settings, tapping your name, then iCloud, then Manage Storage. The backup will resume once you delete old data or purchase more storage.
How to turn on iCloud backup on Mac
On a Mac running macOS 10.15 or newer, open System Settings (or System Preferences on older versions), click your name in the sidebar, then click iCloud. Check the box next to "iCloud Backup." Your Mac will back up automatically when it is plugged in and idle for a few minutes.
On older Macs, the process is similar but the menu names differ slightly. If you are unsure which version of macOS you have, click the Apple menu in the top left, select About This Mac, and look at the version number. Apple's support site has step-by-step instructions for each version if you get stuck.
Understanding iCloud storage limits and costs
Every Apple ID comes with 5 GB of free iCloud storage. This covers most people's backups — a typical iPhone backup is 1 to 3 GB — but if you have thousands of photos, videos, or a lot of app data, you may exceed that limit. When you run out of space, iCloud stops backing up your device until you make room.
If you need more space, you can buy additional storage directly from iCloud. The options are 50 GB for $0.99 per month, 200 GB for $2.99 per month, or 2 TB for $9.99 per month. The cost is charged to your Apple ID payment method every month. You can change or cancel your plan at any time by going to Settings, tapping your name, then iCloud, then Manage Storage, then Change Storage Plan.
If you share an Apple ID with family members, you can set up Family Sharing so that everyone has their own iCloud storage but shares a single payment. This is useful if multiple people in your household need backup space.
What happens when you restore from an iCloud backup
When you set up a new device or erase and reset an old one, you have the option to restore from an iCloud backup. During the initial setup, you will be asked if you want to restore from iCloud, and you will sign in with your Apple ID. The device will then read your backup and restore your data, apps, settings, and photos.
The restore process can take anywhere from a few minutes to over an hour depending on how much data you have and your internet speed. During this time, your device will show a progress bar. Do not unplug it or turn it off. Once the restore is complete, your device will restart and you will be back to where you left off on your old device.
If you want to check which backups are available before you restore, go to Settings on any device, tap your name, then iCloud, then Manage Storage, then Backups. You will see a list of all your devices that have iCloud backup turned on, along with the date of the most recent backup.
iCloud backup versus local backup: the privacy trade-off
iCloud backup is convenient because it happens automatically and you can restore from anywhere. The downside is that your data sits on Apple's servers, encrypted in transit but accessible to Apple itself. If you want a backup that never leaves your device, you can plug your iPhone, iPad, or Mac into a computer and create a local backup instead.
On a Mac, plug in your iPhone or iPad, open Finder, click the device in the sidebar, and click Back Up Now. On a Windows computer, plug in your device, open iTunes, click the device icon, and click Back Up Now. This creates an encrypted backup file on your computer that only you can access. The trade-off is that you have to remember to plug in and back up manually — it does not happen automatically.
Many people use both: iCloud backup for convenience and automatic protection, plus a local backup on their computer for an extra copy that stays entirely offline. This gives you redundancy — if iCloud fails or Apple has a data breach, you still have a backup on your own device.
Troubleshooting common iCloud backup problems
If your backup is not completing, the most common cause is running out of iCloud storage space. Check Manage Storage to see how much you are using. If you are at or near your limit, delete old photos, videos, or messages to make room, or purchase more storage.
If your device is not backing up even though you have storage space, make sure it is plugged in, locked, and connected to Wi-Fi. iCloud backup only runs when all three conditions are met. If you have been waiting more than a few hours and it still has not started, try restarting your device or signing out of iCloud and signing back in.
If you are trying to restore from a backup and the restore fails partway through, check your internet connection. A weak or unstable connection can interrupt the restore. If possible, move closer to your Wi-Fi router or use a wired connection on a Mac. You can also try starting the restore again — it will pick up where it left off.
Frequently Asked Questions
Can I back up to iCloud and also to my computer at the same time?
Yes. You can have iCloud backup turned on and also plug into a computer to create a local backup. Both will work independently. Your device will back up to iCloud automatically when plugged in and locked, and you can manually back up to your computer whenever you want.
What happens to my iCloud backup if I stop paying for extra storage?
If you exceed your free 5 GB and stop paying for additional storage, iCloud stops backing up new data. Your existing backup stays on Apple's servers for 30 days, but no new changes are saved. After 30 days, the backup is deleted. If you buy storage again within that window, your backup resumes.
Can someone else restore my device using my iCloud backup?
No. To restore from your iCloud backup, they would need your Apple ID and password. If your device is lost or stolen, you can use Find My iPhone to erase it remotely, which prevents anyone from accessing your backup.
Does iCloud backup include my text messages and call history?
Yes, iCloud backup includes SMS and MMS text messages, iMessage conversations, and call history. However, if you use a third-party messaging app like WhatsApp or Telegram, those messages are not backed up to iCloud unless the app itself supports iCloud backup.
How often does iCloud backup run?
iCloud backup runs once per day when your device is plugged in, locked, and connected to Wi-Fi. You cannot schedule it for a specific time. If you want to back up more frequently, you can manually start a backup by going to Settings, tapping your name, then iCloud, then Backup, then Back Up Now.