Microsoft has finally brought its Bing Rewards program to Windows Phone, letting users earn points toward gift cards and other benefits by searching the Web. The program had previously been available on the desktop, and launched for Android and iOS in January. Until now, Windows Phone users had been left out. As Windows Phone Central points out, Windows Phone 8.1 is now listed on the Bing Rewards for mobile page. And sure enough, a couple of Bing searches on a Lumia 1520 yielded one credit.