Every year Samsung uses the MWC to launch its latest smart-phones. And this year is no exception. Samsung unveiled its new flagship smartphone, the Galaxy S7, at this year's show. The Galaxy S7 sports a 5.1-inch display with curved edges.

The fifth-generation mobile network technology will amp up transmission speeds. In fact, 4G lets us stream our Internet videos but the 5G will make virtual reality go mainstream. Huawei and Ericsson both are vying for large contracts to upgrade existing operator networks. That's despite the fact that the new 5G technology won't be widely available for several years.

Lenovo always has a strong presence at MWC, and this year the electronics giant is showing off a slew of new laptops, tablets and smart phones. Huawei's MWC exhibit includes smart phones, wearables and even a hybrid laptop-tablet. Huawei has declared its ambition to overtake Apple in the smartphone market and eventually to become the world's largest smartphone maker.