XHTML Mobile Profile (XHTML MP) is an obsolete hypertextual computer language designed specifically for mobile phones and other resource-constrained devices.
It is an XHTML document type defined by the Open Mobile Alliance.
XHTML Basic 1.1 became a W3C Recommendation in July 2008, superseding XHTML-MP 1.2.
[1] To validate as XHTML-MP, a document must contain a proper Document Type Declaration, (DTD) or DOCTYPE, depending on the version of specification followed Note that a series of revisions have been issued to correct technical errors in the above DTDs, and the DTD format is more complex and less widely supported than that of standard HTML.
Many desktop browsers will only validate XHTML-MP at the display time, if an XML MIME type is specified.