The Mobile World Congress (MWC 2018), the world's biggest mobile fair, kicked off in Barcelona, Spain, on Feb 26. [Photo/chinanews.com]

This year's Mobile World Congress (MWC 2018), the world's biggest mobile fair, commenced in Barcelona, Spain, on Feb 26.

The four-day event attracted 2,300 exhibitors showcasing their latest smartphones, tablets, artificial intelligence devices, autonomous drones and other smart gadgets.

Xiaomi's new cellphone - MIX 2 is displayed at Mobile World Congress (MWC 2018), the world's biggest mobile fair, that commenced in Barcelona, Spain, on Feb 26. [Photo/chinanews.com]

Zhongguancun-based telecommunications giants including Xiaomi Corp (Xiaomi), Lenovo Group and ZTE Corporation (ZTE), unveiled their new products during the event.

Themed "Create a better future", the event sets eight topics for future telecommunications development, including "the fourth industrial revolution", "future service supplier", "digital consumption", and "artificial intelligence".

More than 100,000 visitors are expected at the show this year.

Lenovo sets up an exhibition booth at Mobile World Congress (MWC 2018), the world's biggest mobile fair, kicked off in Barcelona, Spain, on Feb 26. [Photo/chinanews.com]