Implementing Google Photos Backup Control (Lumos) on Android

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📝 Key Points of This Article

• It appears that a feature codenamed “Lumos,” which controls backups based on the device’s temperature, has been implemented in the Android version of the “Google Photos” app.
• This is a safety feature that suppresses temperature increases by restricting backups when the device is too hot or while the camera app is performing advanced image processing.
• Code related to “Codename: Lumos” was confirmed to have been added in the app files of the Google Photos app for Android version v7.64.0.874762840 update.

It appears that a feature codenamed “Lumos,” which controls backups according to the device’s temperature, has been implemented in the Android version of Google’s online photo library service, “Google Photos.”

The “Codename: Lumos” backup control feature implemented in the Android version of the “Google Photos” app is a safety function that prevents the device from overheating by restricting backups when the temperature is too high or while the camera app is performing advanced image processing. We have confirmed that code related to “Codename: Lumos” was added to the app files of the Google Photos app for Android version v7.64.0.874762840 update, which was released on Wednesday, February 25, 2026.

<string name="photos_lumos_backup_throttled_title">Backup has stopped</string>
<string name="photos_lumos_camera_extended_processing_card_title">Backup will begin after camera processing</string>
<string name="photos_lumos_device_to_hot_card_subtitle">Backup will resume automatically when your device cools off</string>
<string name="photos_lumos_failed_to_backup_button_label">View failed items</string>

The “Codename: Lumos” backup control feature in the Android version of the “Google Photos” app is designed to automatically lift the restriction once the device cools down or the camera processing is complete. Conversely, there are no settings provided to manually toggle this feature on or off.

“Google Photos” App Link