AT&T Locker has been available on Android and iOS for awhile, but those aren't the only platforms the carrier offers -- others need their online storage, too. Accordingly, AT&T has quietly posted a Windows Phone 8 version of Locker. The new app switches to a Microsoft-inspired interface while preserving all of Locker's core features, including an option to automatically upload photos and videos. If you're an AT&T customer and don't mind tying your Windows Phone's cloud storage to your choice of cellular network, you can grab Locker at the link below.
Source:Windows Phone Store