Bing for mobile (formerly Live Search Mobile) is a search tool for handheld mobile devices from Microsoft as part of their Bing search engine. It is designed for mobile device displays. Bing Mobile is built into Windows Mobile and Windows Phone as proprietary software, accessed via the Search key on Windows Phone 7 and Windows Phone 8 devices. It is also available on Windows Phone 8.1 (and integrated with Microsoft Cortana where available), and can be downloaded for other platforms, including iOS and Android.