Want to expand your virtual real estate on your mobile phone? If you haven’t already gotten your free Windows Live account, now is the time to do it. Sneaking under my radar during the holiday crazies was this announcement from the fine folks at Windows Live – you can now access SkyDrive’s 25GB of storage via apps on your iPhone or Windows Phone. Pretty darn cool. Dropbox is nice, but it can’t hold a candle to the size of SkyDrive.

Of course, Microsoft has baked SkyDrive fairly deeply into Windows Phone 7.5. With the Windows Phone app, you can store documents, notes, photos, videos and access them from your phone. Share photos stored on SkyDrive by email, text, or IM, use Office apps like Word, Excel, and PowerPoint with SkyDrive files, and keep your phone’s camera roll up-to-date on SkyDrive automatically. SkyDrive is integrated directly into the apps as well as core phone functions. Of particular use on mobile, you can browse your entire SkyDrive. share files and manage your storage.

The “extra extra” though is an iPhone app! In addition to their OneNote notebooks, iPhone users can access their files in SkyDrive, create folders, delete files, and share links to folders and files directly using the Mail app. Much of the functionality is the same between the Windows Phone and iPhone apps – tailored to the particular phone’s user experience. This is very very cool indeed – kudos to Microsoft for not leaving us iPhone users hanging!

Read more about these apps and SkyDrive and check out some vids over at the Windows Live site. And get an extra 25GB of useful storage on your mobile device. Thanks Microsoft.