![China\'s Huawei presents 5G devices at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)](http://www.ecns.cn/hd/2019/02/27/507541499d3c44c9a42199b6315c09e8.jpg)
China's Huawei presents 5G devices at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)
![China\'s ZTE presents its Axon 10 Pro 5G cellphone at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)](http://www.ecns.cn/hd/2019/02/27/a795522fab5748c0b1024c8f7f7fd508.jpg)
China's ZTE presents its Axon 10 Pro 5G cellphone at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)
![A visitor tries a 5G aerial taxi of Qatar\'s Ooredoo at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)](http://www.ecns.cn/hd/2019/02/27/6487d964c85a482fa0b8ebdbe385eaec.jpg)
A visitor tries a 5G aerial taxi of Qatar's Ooredoo at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)
![Japan\'s NEC holds a presentation about its 5G projects at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)](http://www.ecns.cn/hd/2019/02/27/0b33d928a7d14ed6807db341acd3439d.jpg)
Japan's NEC holds a presentation about its 5G projects at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)
![Samsung presents its Galaxy S10 5G cellphone at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)](http://www.ecns.cn/hd/2019/02/27/56c03dd33d4a438baaee51f7d2ee0d50.jpg)
Samsung presents its Galaxy S10 5G cellphone at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)
![Chinese company OPPO presents its live 5G real-time multiplayer cloud gaming at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 25, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)](http://www.ecns.cn/hd/2019/02/27/7205296f60e34baba6954a07bc1f180b.jpg)
Chinese company OPPO presents its live 5G real-time multiplayer cloud gaming at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 25, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)
![Saudi Telecom Company presents its booth with 5G mark at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)](http://www.ecns.cn/hd/2019/02/27/5cbbfc001a754b61aba0708aba19af43.jpg)
Saudi Telecom Company presents its booth with 5G mark at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)
![A visitor learns China Mobile 5G plan at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)](http://www.ecns.cn/hd/2019/02/27/5c53f58e784d43888cd4b9161702255f.jpg)
A visitor learns China Mobile 5G plan at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)