So what else happened at that big festival of phones? Samsung launched another wrist-worn device -- its third this week -- BlackBerry outed a pair of new handsets, the Geeksphone Blackphone broke cover, and Panasonic launched a tough-as-nails tablet. And it's all in our MWC daily round-up.
For the Galaxy S5, Samsung said it's going back to basics. Gone are the gimmicky software features of the S4 -- instead, Samsung is focussing on fingerprint scanning, and health tracking.
As rumoured, the S5 features a fingerprint scanner in the home button, so you can unlock it just by giving it the finger. It also has a heart rate monitor, and Android 4.4 KitKat. At 5.1 inches, the screen is slightly bigger than the S4's, and the camera has been bumped up from 13 megapixels to 16.
The Blackphone was one of the surprise hits of the show, with the stand being mobbed by eager fans. So what's all the fuss about? The Blackphone promises to make your privacy options as transparent as possible, so you know just what info you're sharing, and how to stop that.
Finally, Panasonic launched a new 5-inch Toughpad tablet that actually has a smaller screen than the Samsung Galaxy S5. I love the rugged edges -- it looks like the Optimus Prime of tablets.
What do you think of this year's Mobile World Congress so far? Let me know in the comments, or on our Facebook page.