June 30, 2021, Barcelona, Barcelona, Spain: Congress visitors assisting to an immersive experience by TelcoDR in their stand 'Cloud City' during the third day of Mobile World Congress. After being suspended in 2020 due to the pandemic, the Mobile World Congress reopened again, with notably fewer exhibitors and visitors, especially noticeable during the third day. Cloud City is one of the few big and interactive stands where people can experience technology innovations. (Credit Image: © Brisa Palomar/Pacific Press via ZUMA Wire)