PHOTOS: The coolest tech on display at Mobile World Congress

The huge trade event played host to 2,000 exhibitors - ranging from well-known brands like Samsung and HTC showing off their virtual-reality headsets to smaller firms with cool robotics and "internet of things" applications.

Unlike other years, the newly announced phones were almost secondary to the other cool gadgets on show. 

There's a lot to take in and the event can be difficult to navigate. Business Insider jumped on a tour of the venue with ad agency Havas Media's SVP of strategy and innovation, Tom Goodwin, and its global head of creative technology, Jez Jowett, to be pointed to some of the best tech on display.