Why Won‘t My iPhone Back Up to iCloud? Common Causes and Fixes
If you‘re an iPhone user, you know how crucial it is to regularly back up your device. Backups protect all the important data on your phone like photos, messages, and app info so you can easily restore everything if your iPhone is ever lost, damaged, or replaced.
While Apple makes backing up simple with iCloud, it‘s a feature that doesn‘t always work smoothly. Many iPhone users have found their devices won‘t back up to iCloud for various reasons.
If your iPhone won‘t back up to iCloud, don‘t panic. As a former Mac administrator who has seen this problem many times, I can assure you it is fixable. In this post, I‘ll go over the top reasons why your iPhone may not be backing up to iCloud and how to resolve each of them.
The main causes of iCloud backup failures are:
- Insufficient iCloud storage space
- iPhone not connected to power
- No Wi-Fi connection
- Something preventing the iPhone screen from locking
- iCloud service outages
- Backups restricted by a profile
- iPhone still restoring from a previous backup
I‘ll explain each of these in more detail along with other general troubleshooting steps and answers to common iCloud backup questions. By the end, you‘ll know exactly how to get your iPhone successfully backing up again.
Reason 1: Insufficient iCloud Storage Space
The most common reason iPhones won‘t back up to iCloud is lack of storage space. Apple only provides 5 GB of iCloud storage for free. This is shared space used by iCloud Backup along with other iCloud services like Photos, Messages, Mail, and more.
Those free 5 GB fill up fast, especially if you have a phone with a large storage capacity. Your iPhone should notify you if your iCloud storage is too full for the next backup, but you can also check your usage and backup size manually:
To see your total iCloud storage usage:
- Open the Settings app and tap your name at the top
- Tap "iCloud"
- Look at the bar chart at the top showing how much space you‘ve used out of your available storage
To check your next backup size:
- Open the Settings app and tap your name at the top
- Tap "iCloud" then "iCloud Backup"
- Tap your device name under "Back-up Size"
- The "Next Backup Size" will be listed
If your next backup size exceeds your available iCloud storage, you have two options:
- Reduce the size of your backup by disabling app backups or removing data
- Purchase additional iCloud storage (plans start at $0.99/month for 50 GB)
Reason 2: iPhone Not Connected to Power Source
iCloud backups are designed to run automatically, but an important requirement is that your iPhone must be connected to a power source. This can be via a charging cable or wireless charger.
Your best bet is to plug in your iPhone or place it on a wireless charging pad when you go to sleep. Overnight is the perfect time for backups to occur.
If you‘re charging overnight but iCloud backups still aren‘t happening automatically, try a different cable, charging block, or wireless charger. It‘s possible your current power setup is defective or not supplying a consistent enough charge for the backup process to run.
Reason 3: No Wi-Fi Connection
In addition to a power source, your iPhone also needs to be connected to Wi-Fi for iCloud backups to work. iCloud backups won‘t run over cellular data.
First, make sure your iPhone is connected to your preferred Wi-Fi network and that it has a strong signal. If it is, the next thing to check is whether any network restrictions are interfering with iCloud connectivity.
Some corporate and public Wi-Fi networks block the domains and ports needed for iCloud. To test if this is the case, connect to a different Wi-Fi network and try doing a manual iCloud backup (go to Settings > your name > iCloud > iCloud Backup and tap "Back Up Now").
Another possibility is your Wi-Fi upload speeds are too slow for iCloud to run efficiently. Use an internet speed test site or app and look for upload speeds of at least 10 Mbps. If your speeds are slower, you may need to troubleshoot your router or internet service.
Reason 4: iPhone Screen Not Locking
A key criteria for iCloud backups to start automatically is that your iPhone‘s screen must be locked. Even if your iPhone is connected to power and Wi-Fi, the backup process won‘t kick off until you lock your phone.
Some apps can override your iPhone‘s auto-lock setting and keep the screen on indefinitely. For example, if you start playing a song in Spotify then leave the app, your iPhone‘s screen will stay on until you pause or stop the music.
You can check if your iPhone is set to auto-lock by going to Settings > Display & Brightness > Auto-Lock. If auto-lock is turned off, iCloud backups will only run if you manually lock your iPhone screen using the side or top button.
Reason 5: iCloud Service Outages
Though not common, iCloud services can occasionally go down just like any other online system. If iCloud is experiencing an outage, backups won‘t be able to run on your iPhone.
You can quickly check if iCloud is down by visiting Apple‘s System Status page at https://www.apple.com/support/systemstatus/. Here you‘ll see the current status of all Apple services. Look for "iCloud Backup" in the list.
If iCloud Backup has a green dot next to it, that means the service is up and running normally. A yellow or red dot indicates an issue that may prevent your iPhone from backing up.
Reason 6: Backup Restricted by Profile
Is your iPhone provided and managed by your employer or school? If so, backups may be restricted on your device.
Using MDM (mobile device management), organizations can install configuration profiles on iPhones that enable or disable specific features and functionality. Administrators have the ability to prevent iCloud backups if they choose.
To see if your iPhone has any MDM profiles installed:
- Open the Settings app
- Tap "General" then "VPN & Device Management"
- Look for any configuration profiles related to iCloud backup
If you do have a backup restriction in place, you‘ll need to contact your organization‘s IT department to get it lifted.
Reason 7: iPhone Still Restoring From a Previous Backup
If you recently restored your iPhone from an iCloud backup, this could be why you‘re having trouble backing up again. Your iPhone may actually still be in the process of downloading data even if it seems like the restore completed.
While an iPhone restore is happening in the background, you won‘t be able to create a new iCloud backup. You can check if a restore is still ongoing by going to Settings > your name > iCloud > iCloud Backup.
If you see a message that your iPhone is currently being restored, keep it plugged in and on Wi-Fi until you get confirmation the process is done. Depending on how much data you have to restore, this could take several hours.
If it seems like the restore is stuck, first try restarting your iPhone. If that doesn‘t help, you can tap "Stop Restoring iPhone" in iCloud settings, but this will stop the restore process and some of your data may be incomplete.
Other iCloud Backup Troubleshooting Steps
If you‘ve worked through the list above and your iPhone still won‘t back up to iCloud, here are a few other general troubleshooting steps to try:
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Free up storage space on your iPhone. Go to Settings > General > iPhone Storage and offload any large apps or data you don‘t need. A full iPhone can cause various issues.
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Make sure your iPhone is running the latest version of iOS. Go to Settings > General > Software Update to check for any outstanding iOS updates, as new versions often include bug fixes.
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Turn off iCloud Backup in Settings, wait a few moments, then turn it back on. This can clear out any temporary glitches with iCloud.
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Sign out of your iCloud account then sign back in. Go to Settings > your name > Sign Out. Once signed out, restart your iPhone then sign in again.
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Reset all iPhone settings by going to Settings > General > Reset > Reset All Settings. This won‘t erase your data but will clear all custom settings.
Common iCloud Backup Questions
To wrap up, here are answers to some frequently asked questions about iCloud backups:
Why doesn‘t iCloud back up automatically?
iCloud backups should occur automatically if all of the following are true:
- iCloud Backup is enabled in Settings
- Your iPhone is connected to Wi-Fi
- Your iPhone is connected to a power source
- Your iPhone screen is locked
- There is enough iCloud storage space
How much iCloud storage do I need to back up?
The amount of iCloud storage needed varies based on factors like how many apps you include in your backup and how much local data (like photos and messages) is on your iPhone.
While 5 GB is sometimes enough for a minimal backup, most people with modern iPhones that have large amounts of data will need more like 50-200 GB to back up everything.
Why do iCloud backups take so long?
The first iCloud backup you do tends to take the longest as it has to upload all your iPhone‘s data from scratch. The speed also depends on how much data you have and the upload speed of your Wi-Fi connection.
Future backups should be faster, as iCloud will only back up new data or changes since the last backup. However, if you add a lot of new data between backups, it will take longer.
If backups are still extremely slow on a fast Wi-Fi network, try force restarting your iPhone or turning iCloud Backup off and back on.
Wrapping Up
As you can see, quite a few factors can prevent your iPhone from backing up to iCloud. By methodically checking your iCloud storage, connection, settings, and more as covered in this post, you should be able to resolve any iCloud backup issues.
Do you have any other tips for fixing iCloud backups? Let me know in the comments!