Here's the screen that greets you in Office
Mobile for iPhone, available today in the Apple App Store. It's a free
download, but you'll need to have an Office 365 subscription to use it.
Sign-in Screen
You can sign in with an Office ID, which is
usually your Microsoft account. Every Office user can add five iOS
devices to their account, so a whole family can potentially use Office
on their iPhones (or iPod Touches).
Documents and Navigation
This is the Recent screen, which lets you browse recently edited or viewed documents as well as samples.
SkyDrive Integrated
All documents are saved and synced to SkyDrive. If you use SharePoint, documents on that service are accessible, too.
Word
The functions in Word are very minimal. Users
can view documents and perform basic edits (including commenting), but
adding bulleted lists or changing the font isn't possible.
Formatting Options
Here are the formatting options available in Word for iPhone.
Locked Document
Even though this document is the right format (docx), it can't be edited in Word for iPhone.
Excel
Excel for iPhone includes many editing options, including generating tables and formatting cells.
Editing Tools
Here are some of the editing tools you get in Excel.
PowerPoint
PowerPoint for iPhone is mainly a viewer, but you can still add notes and edit the text in slides.