CNBC's Tom Mackenzie looks back at the highlights of the Mobile World Congress.
Marco Patuano, CEO of Telecom Italia, says the European telecommunications industry needs young talent like many of the companies in Silicon Valley.
Rajeev Chand, managing director and head of research at Rutberg and Company, says Facebook's acquisition of WhatsApp was a "reasonable bet" as the messaging service could see growth maturing in the next few years.
Jeff Gordon, CEO of Syniverse, says that data can be used in a number of ways to improve the experience for consumers, but "security has to be rule number one".
Chris Dedicoat, president for EMEAR at Cisco, says that mobile is having a big impact on the industry and stressed that companies should leverage new technology.
CNBC's Tom Mackenzie presents the Nokia X smartphone from the Mobile World Congress in Barcelona.