https://www.techradar.com/news/mwc-2018 >Update: We now know more about several of the devices that might land at MWC 2018, including the Samsung Galaxy S9, Sony Xperia XZ Premium 2 and Samsung Galaxy Tab S4. >MWC (or Mobile World Congress to give it its full name) is one of the biggest events on the mobile calendar, with 2017's Barcelona show bringing us the LG G6, Sony Xperia XZ Premium and Huawei P10 among dozens of other devices.