Microsoft launches Office preview apps for Android smartphones

The current Android smartphone solution from Microsoft is Office Mobile, an outdated app that lacks the finger-friendliness of the apps available for iPhones, iPads, and Android tablets. Once the new Office apps for Android smartphones go out of preview and apps are ready for mass distribution, they will replace Office Mobile.
At a first glance, the new Office preview apps for Android smartphones seem to come with the same features of the Android tablet versions. Obviously, the apps have been optimised for smartphones. All three apps are compatible with Android smartphones running 4.4 KitKat or a newer Android version.
To download the Office preview apps for Android smartphones, first you'll have to join the Microsoft's Office for Android community on Google+, and then opt in as a tester for Word, Powerpoint, and Excel. Once the first two stages are complete, you'll be able to download the preview apps from Google Play.
Download Microsoft Word for free from Google Play
Download Microsoft Excel for free from Google Play
Download Microsoft Powerpoint for free from Google Play
Things that are NOT allowed: