Visitors test out the Huawei P10 smartphones at the Mobile World Congress held on Feb 28, 2017 in Barcelona, Spain. [Photo by Liu Zheng/chinadaily.com.cn]

The world's largest mobile industry exhibition is underway with new products wowing visitors.

Organizer of the Mobile World Congress, John Hoffman, said the show focused on five new trends identified; the evolution of 5G, digital authentication, augmented reality, the Internet of Things and industrial sustainability.

The MWC gathered together 2,200 exhibitors this year and it is expected to attract a total of 101,000 industry professionals.

Let's see which products attracted the most attention.