Adu, Barcelona: Mobile World Congress 2011 is over

We've still got a handful of posts in the pipeline, but with the gates closed and everyone in the air heading back to their respective homes, our adventures at Mobile World Congress in Barcelona have come to a close. The good news is we can return to our regular four of hours of sleep each night (a figure that was cut in half this week). The bad news is the heartache of leaving behind gorgeous scenery and delicious paella. Take a look at some of our highlights below!

Microsoft

Microsoft shows off WP7's future with multitasking, Twitter integration, and IE9, all coming this year
Windows Phone 7's multitasking uses zoomed-out cards to check on your apps
Microsoft Rally Ball demo shows Windows Phone 7, Kinect, Xbox Live living in perfect harmony (video)
Windows Phone 7 update with copy and paste, CDMA support coming in 'early March'
See the new Windows Phone 7 features in motion (video)
Live from Steve Ballmer's MWC 2011 keynote!

Nokia

The Engadget Interview: Nokia CEO Stephen Elop talks Microsoft, Symbian, MeeGo, and Windows Phone
Debunk: Elop never said Microsoft is paying Nokia billions of dollars to use Windows Phone
The Engadget Interview: Microsoft's Aaron Woodman talks Windows Phone 7 and Nokia
Nokia: 'Our first priority is beating Android'
Nokia hints we'll see first Windows Phone 7 device this year
Live from 'An Evening With Nokia' at MWC 2011!

HTC

HTC launches 1.5GHz, 7-inch Android 2.4 Flyer into the tablet wars (update: hands-on video!)
HTC Flyer vs. Galaxy Tab vs. iPad... fight!
A closer look at the HTC Flyer's screen, stylus, and Scribe
HTC refreshes Android lineup with Incredible S, Desire S and Wildfire S (update: hands-on)
HTC Incredible S, Desire S, and Wildfire S video hands-on
HTC Salsa and Chacha bring the dedicated Facebook button to Android (update: eyes-on)

Samsung

Samsung Galaxy S II official: dual-core 1GHz CPU, 4.3-inch Super AMOLED Plus, coming this month (hands-on with video)
Samsung Galaxy Tab 10.1 official: Tegra 2, Honeycomb, dual cameras (hands-on with video)
T-Mobile Galaxy S 4G hands-on
Samsung Galaxy S WiFi 5.0 preview (video)
Samsung Galaxy Ace, Gio, Fit, and mini gather for a mega hands-on
Motorola Xoom vs. Samsung Galaxy Tab 10.1 vs. LG G-Slate -- battle of the Tegra 2 Honeycomb tablets

Google

Eric Schmidt: 'We certainly tried' to get Nokia to use Android
Next version of Android will combine Gingerbread and Honeycomb, arrive on a six-month cycle
Google demos Android Movie Studio for Honeycomb
Live from Eric Schmidt's MWC 2011 keynote
Google's MWC 2011 Android booth tour

LG

LG Optimus Pad first hands-on! (video)
LG Optimus 3D hands-on
Android-powered LG Revolution caught streaming Netflix at MWC (video)
Motorola Xoom vs. Samsung Galaxy Tab 10.1 vs. LG G-Slate -- battle of the Tegra 2 Honeycomb tablets

Sony Ericsson

Sony Ericsson Xperia family portrait at MWC 2011
Sony Ericsson Xperia Play MWC 2011 hands-on! (updated with video)
Sony Ericsson Xperia Pro first hands-on! (updated with video)
Sony Ericsson Xperia Arc preview (video)
Sony Ericsson Xperia Neo first hands-on! (updated with video)
Live from Sony Ericsson's MWC 2011 press event!