Microsoft Office made big waves in mobile earlier this summer when it came to the iPhone, but now it's making an even bigger splash on world's No. 1 mobile platform, Android. Starting Wednesday, Office 365 subscribers will be able to download and run the Office Mobile app for Android. The Android version of Office only works on phones. Owners of Android tablets, just like iPad users, will have to settle for Office web apps since they won't be able to download the official app from Google Play (side-loading, of course, is always an option). Android phones must be running version 4.0 "Ice Cream Sandwich" or later.