This year the screen sees an even bigger boost with an edge-to-edge full-color OLED. Last year the Mi Band 5 brought a larger OLED screen and a magnetic charging - two major upgrades over the Mi Band 4. It's small, lightweight, and super cheap, yet it aims to do a ton of stuff. Xiaomi's Mi Smart Band, or just Mi Band as it's known in China, is undeniably one of the most popular wearables across the world.
