There were of course a number of smartphone announcements (for example the Samsung S5), but they really were not that interesting.
There were three that were interesting for very different reasons:
First the Lenovo S860. This $349 phone has amazing battery life: up to 40 days in standby and 43 hours of talk time.
Lenovo S850 and S860 smartphones bring ultra-long battery life, quad-core processors - SlashGear
Then, Mozilla announced yet more Firefox OS progress on low-end phones:
Firefox aiming to power entry-level smartphone - Taipei Times
And finally, the Nokia X series (actually 3 different phones):
Nokia fails all on all fronts with Nokia X. Basically it is an Android phone with no Google -- has Microsoft infrastructure instead, and a front-end designed to look like Windows Phone. Ugh! Who would want this?
Nokia Launches Android-Based Phone; Google Giggles - Nokia (NYSE:NOK) - 24/7 Wall St.
This is Nokia X: Android and Windows Phone collide | The Verge
Will the Nokia X be useful without Google's services?
Nokia X Software Platform: An Android-Windows Phone mess (hands-on) - CNET Reviews
How Developers And Consumers Can Get Android Apps On The Nokia X – ReadWrite
Really, this Nokia phone will flop so big!!!
Nokia seems to be having the corporate equivalent of a nervous breakdown.