Sony Ericsson's phone introductions at Mobile World Congress are likely to be headlined by a high-end but conventional Walkman phone, according to a leak. A slider codenamed the "Hikaru" is said by SEMC to have a true metal shell and should come with an 8-megapixel camera, a relatively large 2.6-inch screen as well as 8GB of internal storage for its media. A music focus will supposedly be evident in dedicated side music controls, a full-size headphone jack and stereo speakers.

Not all information about the Hikaru is available, including whether it will support 2G and 3G networks in North America. Sony Ericsson often includes HSPA with its high-end devices, however. The company may significantly delay the phone with shipments not starting until the end of the spring, or as much as four months after the unveiling.