Remember when the world only had to worry about fascist dictators and world war? When the only thing on people's minds was the rise of a militaristic nation from the far east? Aaah... simpler times. The 1930s, when Dick Tracy first used his amazing watch to communicate with the office. Only now, some 80 years later is this being fully realised. A company called Nubia ( a 1930s reference perhaps?) has launched a full smartphone on the wrist, complete with OLED screen. Look at this for more details. https://www.anandtech.com/show/14025/nubia-at-mwc-2019-wearable-oled-smartphone-coming-to-a-wrist-near-you

Now if we can only invent a weapon to end all wars - maybe something to use that new-fangled radiation perhaps....