You'd expect file transfers between Android phones and Chromebooks to be as simple as can be, considering that Google's the driving force behind both of those operating systems — and by golly, you'd be right.

Just like on a Windows system, all you've gotta do to connect your Android phone to a Chromebook is plug it into any open USB port, then tap the USB charging notification on the phone and select either "Transfer files" or "File transfer" from the prompt that appears — or select "Transfer photos" or "PTP" if you want your phone to be treated like a camera, with a focus exclusively on multimedia files.

Once you do that, the ChromeOS Files app should automatically appear on your Chromebook with your phone loaded as the active storage focus. You'll find an option within the app's menu (in the upper-right corner of the screen) to back up all of your phone's media files to Google Drive if you want to go down that road — or you can simply drag and drop files in either direction as needed.

If you want additional information, follow this link - https://www.computerworld.com/article/3214452/android-file-transfer-how-to-move-data-between-your-phone-and-computer.html