The dawn of the microUSB may be upon us, but it still has a few years before it's properly phased out. While the USB Type-C allows reversible plugs, it's yet to be come the most popular, let alone the only standard. Many new smartphones, among other gadgets, available today on the market still prefer the microUSB plugs either to maintain backwards compatibility or simply because it's a smaller plug. Just look at the Galaxy S7 series. And we all know the inconvenience of trying to plug a microUSB cable the wrong way. Best case scenario - it's annoying. Worst case - you can irreversibly...
Source: http://www.gsmarena.com/reversible_microusb_cable_by_mcflip-news-17791.php