Do I need to sign in with a Microsoft login in order to edit Office files? On Android editing is available for the following file types:Īny other Office files will be read-only. Once connected, you can access the files in your Dropbox from the Open tab. From the appropriate Office app, tap on the Account tab and connect your Dropbox if you haven't already. You can view and edit other Office file formats by opening them directly from the Office apps for mobile (Word, Excel, or PowerPoint). On iOS the Edit icon in the Dropbox app will appear for the following file types: What file types can I edit from the Dropbox app with the mobile Office apps?