Microsoft today announced the launch of Office Mobile for Office 365 subscribers, a new iPhone-only app that allows users to view and edit Word, Excel, and PowerPoint files. The free app requires a subscription to Microsoft's Office 365 service in order to function. Similar to our free Office Mobile for Windows Phone that ships with every handset, the iPhone app enables great Office content viewing and on-the-go content editing capabilities. After signing in to an Office 365 account, you can access, view and edit Microsoft W