It's the time of year for the Mobile World Congress with the world's industry leaders gathering in Barcelona. This year's event has been about mixing the old with the new. Whilst Sony launched its new Xperia XZ with super slow motion, it was the return of the old guard which stole the headlines. Nokia and BlackBerry returned to the smartphone scene, with Nokia re-launching its iconic 3310 handset. To discuss the latest news and trends Georgie Frost was joined by tech journalist Chris Green.
