<page_title> Microsoft Lumia </page_title> <section_title> Nokia-branded Lumia devices </section_title> <table> <cell> Nokia Lumia 2520 <col_header> Name </col_header> </cell> <cell> October 2013 <col_header> Release date </col_header> </cell> <cell> Windows RT <col_header> Installed operating system </col_header> </cell> </table>
In October 2013, Nokia's Lumia 2520 had the Microsoft's Windows RT operating system.