iCloud Backup Stuck on Estimating Time Remaining? 10 Ways to Fix It

iCloud provides Apple users with a convenient way to back up important iPhone data and restore it when needed. However, some users may encounter an issue where iCloud backup gets stuck on "Estimating Time Remaining" during the backup process, such as the progress remaining at "1 minute remaining" or "1 hour remaining" for a long time. This can be frustrating and prevent your iPhone from completing a successful backup.

In this article, we will explain why iCloud backup gets stuck on estimating time remaining and provide practical solutions to help you fix the issue and complete your backup smoothly.

Part 1: How Long Does an iCloud Backup Usually Take?

The time required for an iCloud backup depends on several factors, including your Wi-Fi connection speed and the amount of data being backed up. A stable internet connection and a smaller backup size usually mean a faster process.

Then, how long does it take to back up your iPhone to iCloud? Generally, an iCloud backup can take around 20 minutes to 2 hours. However, large backups with many photos, videos, or app data may take longer.

Part 2: Why is iCloud Backup Taking So Long?

If your iCloud backup is taking much longer than expected or gets stuck on "Estimating Time Remaining," one or more of the following factors may be responsible:

• Unstable Wi-Fi: A weak or unstable internet connection can slow down the backup process or cause it to get stuck.
• Large Backup Size: Backing up a large amount of photos, videos, apps, and other data naturally takes more time.
• Insufficient iCloud Storage: If your iCloud storage is full, the backup may fail until you free up space or purchase additional storage.
• Apple Server issues: Temporary problems with Apple's iCloud servers can interrupt or delay the backup process.
• Outdated iOS Version: Older versions of iOS may contain bugs that interfere with the backup process.

Part 3. How to Fix iCloud Backup Stuck on Estimating Time Remaining

If your iCloud backup is stuck on "Estimating Time Remaining," don't worry. The following solutions can help you troubleshoot the problem and complete the backup successfully.

Fix 1. Check the Internet Connection

iCloud backup requires a stable Wi-Fi connection. If your network is weak or unstable, the backup process may become slow or get stuck. Check your Wi-Fi connection and make sure the network works properly.

If the issue persists, try resetting your network settings. Go to "Settings" > "General" > "Transfer or Reset iPhone" > "Reset" > "Reset Network Settings."

Fix 2. Restart Your iPhone

Restarting your iPhone can fix temporary system glitches that may prevent iCloud backup from completing. To restart your iPhone:

Step 1. Go to "Settings" > "General" > "Shut Down."

Step 2. Drag the slider to turn off your iPhone.

Step 3. Wait a few seconds, then press and hold the Side button to turn it on again.

Fix 3. Update iOS

An outdated iOS version may contain bugs or compatibility issues that affect iCloud backup. Updating your iPhone to the latest iOS version may help fix the problem.

Step 1. Go to "Settings" > "General" > "Software Update." (iPhone stuck on software update?)

Step 2. If an update is available, tap "Download and Install."

Fix 4. Turn on Automatic Date and Time Sync

Occasionally, the date and time settings on your iPhone might become misaligned, causing issues with iCloud backup, such as iCloud backup stuck on estimating time remaining. To keep them synchronized, follow these steps:

Step 1. Open the "Settings" app and select "General".

Step 2. Tap "Date & Time" and then enable the "Set Automatically" option.

Fix 5: Check Your iCloud Backup Size

Insufficient iCloud storage space can also be a reason why your iCloud backup gets stuck. Besides deleting unnecessary data or old backups, you can check the size of the backup being uploaded and remove unwanted app data if needed.

Step 1. Open the "Settings" app, tap your name, and go to "iCloud" > "Storage" > "Backups" > select your iPhone.

Step 2. You can check the last backup time, the next backup size, and the apps included in the backup.

Step 3. Turn off apps that you don't need to back up to reduce the backup size.

Fix 6. Delete Old iCloud Backup

An old or corrupted iCloud backup may sometimes interfere with the backup process and cause it to get stuck. Deleting unnecessary old backups can help free up iCloud storage space and may resolve the issue. Follow the steps below:

Step 1. Open "Settings" on your iPhone, tap your name, and go to "iCloud" > "Storage" > "Backups."

Step 2. Select an old backup that you no longer need.

Step 3. Tap "Delete Backup" to remove it from iCloud.

Fix 7. Enable Automatic Backup

If your iCloud backup is stuck, enabling automatic backup can help ensure your iPhone backs up properly. iCloud automatically backs up your device when it is locked, connected to power, and connected to Wi-Fi.

To enable automatic backup, go to your iPhone's "Settings" > [your name] > "iCloud" > "iCloud Backup." Then turn on the "iCloud Backup" option.

Fix 8. Sign Out of and Back into Your Apple ID

Signing out of and back into your Apple ID can refresh the iCloud connection and may help fix backup issues like getting stuck on "Estimating Time Remaining."

Step 1. Open the "Settings" app and tap your name.

Step 2. Scroll down and tap "Sign Out." Enter your Apple ID password if prompted, then confirm. (Can't sign out of your Apple ID?)

Step 3. Restart your iPhone and sign back into your Apple ID.

Fix 9. Check Apple System Status

Sometimes, iCloud backup problems are caused by temporary Apple server issues. Visit Apple's System Status page to check whether iCloud services are working properly. If there is an outage, wait until Apple resolves it before trying the backup again.

Fix 10. Reset All Settings

If none of the above methods work, you can try resetting all settings on your iPhone. This will restore system settings to their defaults without deleting your personal data.

Step 1. Open "Settings" on your iPhone.

Step 2. Go to "General" > "Transfer or Reset iPhone" > "Reset."

Step 3. Select "Reset All Settings" and confirm the action.

Part 4: Best Alternative to Back Up iPhone When iCloud Backup Fails

iCloud is Apple's built-in solution for backing up and restoring iPhone data. However, iCloud backup may sometimes get stuck or fail due to network issues, storage limitations, or system problems. In such cases, you can use Coolmuster iOS Assistant as an iCloud alternative to back up your iPhone directly to a computer.

This tool allows you to back up iPhone/iPad/iPod data without relying on iCloud or iTunes. You can also selectively transfer files between your iOS device and computer, making it easier to manage your important data.

What can Coolmuster iOS Assistant do for you?

• Backup and restore your iPhone/iPad/iPod with one click.
• Transfer files between iOS devices and computers.
• Support contacts, messages, music, photos, videos, voice memos, and more.
• Manage your iOS data directly on your PC/Mac.
• Support various iOS versions and iPhone models, including the latest iOS 26/27 and iPhone 17/16/15.

Free Download for PC

 

Free Download for Mac

Follow the below steps to back up your iPhone to your computer using iOS Assistant:

Video Tutorial:

Conclusion

That's it! The iCloud backup stuck issue is a common problem among iOS users, but it can usually be fixed with the right solutions. In this guide, we have covered several ways to troubleshoot the problem, including checking your network connection, restarting your iPhone, updating iOS, resetting settings, and using Coolmuster iOS Assistant as an alternative backup solution. With these methods, you can complete your iPhone backup smoothly and keep your important data safe.

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