How to Use OneDrive and iCloud Photos Together on iPhone
Question details
Users want to know how to back up photos using OneDrive Camera Upload while iCloud Photos is active, without triggering sync errors or battery drain.
- Product
- OneDrive
- Device & OS
- iOS
- Scenario
- Attempting to sync iPhone camera roll to OneDrive when iCloud Photos is set to optimize local storage.
- Observed behavior
- iCloud's storage optimization removes full-resolution images from the iPhone, preventing OneDrive from uploading the originals. This results in sync failures, missing backups, and unnecessary battery drain as OneDrive constantly retries the upload.
Check your iPhone storage capacity and verify if 'Optimize iPhone Storage' is currently enabled in your iCloud Photos settings before making changes.
Download and Keep Original Photos on iPhone
Temporarily disable iCloud storage optimization so OneDrive can access and upload the full-resolution photo files directly from your device.
OneDrive requires the full-resolution original files to upload your photos successfully. By downloading the originals back to your iPhone, you allow OneDrive's Camera Upload feature to complete the synchronization without errors.
Open the Settings app on your iPhone, tap your Apple ID name at the top, select 'iCloud', and then tap 'Photos'.
Check the option for 'Download and Keep Originals'. Wait for your iPhone to download the full-resolution photos from iCloud. Make sure your phone is connected to Wi-Fi and has enough local storage.
Open the OneDrive app and leave it active on the screen. Allow the Camera Upload feature to process and upload the newly downloaded original photos to your Microsoft cloud.
Once the OneDrive upload is completely finished, you can return to the iCloud Photos settings and re-select 'Optimize iPhone Storage' to free up space on your device again.

Transfer Full-Resolution Files via a Computer
Bypass the iPhone entirely by downloading your iCloud photos to a computer and uploading them directly into your OneDrive account.
Manage Your Cloud Documents Easily with WPS Office
While you organize your photos across OneDrive and iCloud, consider WPS Office for handling your documents. As a completely free and lightweight alternative to Microsoft Office, WPS seamlessly integrates with OneDrive, allowing you to edit files on your iPhone without consuming heavy storage space.
- 1. Download WPS Office: Search for WPS Office in the App Store and install the free application on your iPhone or iPad.
- 2. Connect Your OneDrive: Open WPS Office, navigate to the Cloud tab, select 'Add Cloud Storage', and log in to your OneDrive account.
- 3. Edit Seamlessly: Tap on any Word, Excel, or PowerPoint file to open and edit it. Your changes will automatically sync back to OneDrive.

Frequently Asked Questions
Why does OneDrive say it cannot upload my iCloud photos?
This happens when iCloud's 'Optimize iPhone Storage' feature is turned on, which removes the full-resolution originals from your device to save space. OneDrive requires the original files, rather than the low-resolution thumbnails, to complete the camera upload process.
Will OneDrive Camera Upload delete my photos from iCloud?
No. OneDrive's Camera Upload only copies your photos to your Microsoft cloud storage account. It does not delete, move, or modify the original photos stored in your iCloud account or on your iPhone's local camera roll.
How can I stop OneDrive from draining my iPhone battery while syncing?
Battery drain typically occurs when OneDrive gets stuck in a loop trying to upload optimized iCloud photos that it cannot access. To stop this, you must either disable Camera Upload in the OneDrive app or download the original photos to your iPhone so the upload queue can successfully clear.




