Review HMD's Fusion smartphone has a pogo-pin port on the back, allowing some nifty peripherals, including gaming controls, and its specs are open. Perhaps the most impressive of HMD's own add-ons is ...

The HMD Fusion brings the chance to add new functionality through smart cases., and you can download the plans to make your own. Is that enough to stand out in a crowded market? I’ve spent time ...