With Excel the leading format for spreadsheets, and Android appearing on a growing number of mobile devices, combining the two could open new doors in your ability to do business. By default, Excel documents opened on an Android device appear in the Document Viewer built into the operating system, but third-party apps are available to help you view and edit Excel files.
Android Document Viewer
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Android comes with a built-in document viewer designed to view a variety of file types, including Excel, or XLSX. Tapping on an Excel file in an email attachment or on the device's memory opens the Document Viewer by default. To switch to a different app, open the "Apps" section of the Android Settings tool. Swipe right to the Apps column then tap "Document Viewer." Tap "Clear defaults," and the next time an Excel file is opened you'll have the opportunity to select a new default choice from all the compatible apps on the device.
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Microsoft Office and SkyDrive
As of November 2012 Microsoft doesn't provide an official Office application for Android. The company has confirmed it's working on an Office Android app due to appear sometime in 2013. Microsoft does provide a SkyDrive app for Android that enables you to sync files, including spreadsheets, from a computer and other devices to your Android phone or tablet. Tapping on an Excel file in the SkyDrive app launches the default viewing app for the spreadsheet file type.
Documents to Go
Documents to Go is one of the third-party alternatives for viewing Excel files on Android devices. The app displays Excel, Word and PowerPoint files for free, though you must pay to upgrade to the full version if you want to be able to edit files as well as view them. The app supports password-protected files, Office versions 97 and later, and integrates with Google Docs. You can sync files from a computer using a USB cable or an external file syncing solution such as Dropbox. Check the app listing on Google Play for compatibility information for your device.
Kingsoft Office
Kingsoft Office is another third-party app you can use instead of the standard Document Viewer tool. The app is free to download and use and enables both viewing and editing for 23 file types, including Excel. A built-in file manager is included for organizing files on the Android device's storage. Charts, formulas and other advanced features found in Excel features are all supported, as are large spreadsheets. Your device must be running Android 2.1 or higher to work with Kingsoft Office.