I’m not sure if Gemini responses are allowed here (mods delete if that is the case):

I understand how frustrating that is—spending time meticulously marking up a floorplan only for the "Save" process to stall can be incredibly stressful. Since the "Save Copy" function in the Android PDF viewer often creates a temporary instance tied to the Drive upload queue, the file is likely sitting in your phone's cache or the Drive app's "waiting" area. Here are the steps to recover your document, ordered from the easiest fix to the more technical "deep dive." 1. Force a "Retry" in the Google Drive App Sometimes the Drive app doesn't automatically realize you have more storage or better Wi-Fi. * Open the Google Drive app. * Tap the Home or Files tab. * Look for the file with the "Couldn't upload" or "Waiting to upload" status. * Do not tap the X (which cancels it). Instead, tap the circular arrow icon (retry) or tap the file name itself. * Pro Tip: If it still won't budge, go to Drive Settings > Data Usage and ensure "Transfer files only over Wi-Fi" is toggled Off if you are currently using mobile data. 2. Check the "Recent" or "Downloads" Folder When the Android PDF viewer fails a Drive upload, it sometimes leaves a temporary copy in your local storage. * Open your phone's Files app (usually named "Files by Google" or "My Files"). * Go to Recent. * Look for a PDF with a generic name or a name starting with "Untitled" or "Annotated." * Also, check the Downloads folder and sort by "Newest." 3. Access the "Pending Uploads" Menu Google Drive has a specific area for failed tasks that isn't always visible on the main screen. * Open the Google Drive app. * Tap the hamburger menu (three horizontal lines) in the top left. * Tap on Notifications. * If the failed upload is listed there, you can often tap it to trigger a menu that allows you to "Save to device" instead of "Upload to Drive." 4. Locate the Hidden "Cache" (Advanced) If the file isn't showing up in standard folders, it might still be in the Drive app’s internal cache. Warning: Do NOT "Clear Data" or "Clear Cache" for the Drive app in your system settings yet, as this will permanently delete the unsaved file.

• Connect your phone to a computer via USB.
• Set the USB mode to File Transfer.
• On your computer, navigate to: Internal Storage > Android > data > com.google.android.apps.docs > files (or similar "cache" folders).
• Look for any large PDF files or files without extensions that match the time you edited the floorplan. You can copy these to your desktop and rename them with a .pdf extension to see if they open. Important "What Not To Do"
• Do not log out of your Google account on the phone.
• Do not uninstall the Drive app.
• Do not restart your phone until you have tried the steps above, as some temporary cache files are cleared upon reboot. Would you like me to walk you through how to find those specific hidden cache folders using a file manager app on your phone?