- Xteink has just launched the X4 Pro
- This tiny ereader can stick to the back of your phone, and its main upgrades include a light and a touchscreen
- New open source ereader software called FreeInk has also been announced
While small smartphones have largely gone out of fashion, it seems there’s an appetite for absolutely tiny ereaders. The Xteink brand is one of the biggest small-screen successes in this space, and its new model, the Xteink X4 Pro, is set to potentially be its best yet.