WhatsApp Backup Stuck? 8 Fixes (Android/iPhone)

What Causes WhatsApp Backup to Get Stuck?

A WhatsApp backup that freezes at a percentage, sits at 0%, or spins forever without finishing means the upload to Google Drive (Android) or iCloud (iPhone) has stalled. The backup process compresses your chats and media, then uploads the archive. A stall at any stage — preparing, uploading, or finalizing — leaves the backup incomplete and your data unprotected.

The most common cause is the network: backups are large, and an unstable or slow connection drops the upload partway. WhatsApp also pauses or throttles backups when the phone is not charging or the screen is off, depending on your settings. Storage is the next culprit — if your phone is nearly full, WhatsApp cannot build the backup file, and if your Google Drive or iCloud is full, the upload has nowhere to land. Account problems matter too: being signed out of the Google account linked to Drive backups, or iCloud Drive being disabled, silently breaks the whole process. Including videos makes backups many times larger and dramatically increases the chance of a stall, as do outdated app versions with known backup bugs.

The fixes below cover both platforms. Platform-specific steps are marked clearly; the rest apply to Android and iPhone alike.

How to Fix a Stuck WhatsApp Backup

Fix 1: Connect to Stable WiFi and Plug In the Charger

WhatsApp backups are big uploads. They need steady WiFi and power; mobile data drops and battery-saver throttling are the top stall triggers.

Connect to a reliable WiFi network and confirm it is fast enough by loading a webpage.
Plug the phone into its charger. Keep it charging for the entire backup.
On Android, temporarily disable battery saver. On iPhone, disable Low Power Mode.
Keep WhatsApp open and the screen on while the backup runs.
Retry the backup and watch whether the percentage now advances.

Fix 2: Check Phone Storage Space

WhatsApp needs free space to assemble the backup archive before uploading. A nearly full phone stalls the backup at the preparing stage.

Open Settings, Storage, and check free space.
Delete unneeded photos, videos, downloads, and unused apps until you have several gigabytes free — backups with media need room.
On Android, clear WhatsApp’s cache via Settings, Apps, WhatsApp, Storage, Clear Cache.
Retry the backup.

Fix 3: Verify Google Drive Space and Account (Android)

Android backups upload to Google Drive. If Drive is full or the wrong account is linked, the upload stalls or fails silently.

Open the Google Drive app or drive.google.com and check your storage. Free up space or upgrade if it is full.
In WhatsApp, go to Settings, Chats, Chat backup, and check which Google account is listed.
Confirm that account is still signed in on the phone under Settings, Accounts.
If the account changed, tap the Google account field in Chat backup and select the correct one.
Make sure Google Drive itself is updated from the Play Store.

Fix 4: Verify iCloud Space and Settings (iPhone)

iPhone backups upload to iCloud. Disabled iCloud Drive or a full iCloud plan stalls them the same way.

Go to Settings, tap your name, then iCloud, and check available iCloud storage. Free up space or upgrade if full.
In the same iCloud screen, confirm iCloud Drive is turned on.
Scroll to WhatsApp in the iCloud app list and make sure its toggle is on.
In WhatsApp, go to Settings, Chats, Chat Backup, and retry.

Fix 5: Exclude Videos from the Backup

Videos are usually the bulk of a backup’s size. Excluding them shrinks the upload dramatically and is the single most effective fix for backups that stall midway.

On Android: WhatsApp, Settings, Chats, Chat backup, and turn off “Include videos.”
On iPhone: WhatsApp, Settings, Chats, Chat Backup, and turn off “Include Videos.”
Run the backup again and confirm it completes.
Back up videos separately through Google Photos or iCloud Photos if you want them preserved.

Fix 6: Update WhatsApp

Backup stalls caused by app bugs are fixed in updates. An old version may also use deprecated backup APIs.

Open the Play Store or App Store and update WhatsApp to the latest version.
On Android, also update Google Drive and Google Play Services.
Restart the phone, then retry the backup.

Fix 7: Run a Manual Backup and Change the Schedule

Automatic backups that always fail at the same point sometimes succeed when triggered manually under good conditions.

Go to WhatsApp, Settings, Chats, Chat backup.
Set the backup frequency to a time when you are reliably on WiFi and charging, such as overnight.
Tap Back Up Now (Android) or Back Up Now (iPhone) while on WiFi and charging.
Leave the phone untouched until the backup reports success with a timestamp.

Fix 8: Re-link the Backup Account

Expired or glitched account tokens break the upload handshake. Removing and re-adding the link refreshes it.

On Android: in WhatsApp’s Chat backup settings, tap the Google account, choose a different account or remove it, then select the correct account again and grant Drive permission when prompted.
On iPhone: sign out of iCloud and back in via Settings, your name, Sign Out (choose Keep on iPhone for data), then sign back in and re-enable iCloud Drive and WhatsApp.
Run a manual backup to confirm the link works.

WhatsApp documents backup requirements in its official help center, including current storage and account prerequisites.

How to Prevent WhatsApp Backup Problems

Leave video exclusion on unless you specifically need videos in chat backups.
Schedule automatic backups for overnight while the phone charges on WiFi.
Keep several gigabytes of free phone storage and monitor your Drive or iCloud quota.
Keep WhatsApp, Google Drive, and your OS updated.
Do not switch Google accounts or Apple IDs without updating the backup account in WhatsApp.
Check the “last backup” timestamp monthly to catch silent failures early.

FAQs

Why is my WhatsApp backup stuck at 100%?

The upload finished but the final verification or server confirmation did not. Wait a few minutes, then check the last-backup timestamp. If it never updates, retry on stable WiFi while charging.

Can I back up WhatsApp without Google Drive or iCloud?

On Android, WhatsApp also keeps a local backup on the phone’s storage automatically, but it does not survive a lost or wiped phone. For real protection, the cloud backup needs to complete.

How big should I expect my backup to be?

Chat text is small; media dominates. A backup with years of photos and videos can be tens of gigabytes. Excluding videos typically cuts it to a fraction of that size.

Why did my backup work before and stop now?

The usual change is a full cloud quota, a switched account, or a much larger backup after months of accumulated media. Check Drive or iCloud space first.

Will reinstalling WhatsApp delete my chats if the backup is stuck?

Do not reinstall until you have a confirmed successful backup with a current timestamp. Without it, reinstalling wipes local chats. Fix the backup first using the steps above.

Conclusion

A stuck WhatsApp backup is a network, storage, or account-link problem in nearly every case. Get on stable WiFi with the charger plugged in, free up space on the phone and in the cloud, verify the linked account, and exclude videos to shrink the upload. Once a manual backup completes cleanly, the scheduled ones will follow.