The famous tipster evleaks says there is a chance Nokia is working on a dual-SIM Lumia 720. Unfortunately that's all we get at this point. Dual-SIM Lumia 720 may be on the way. @evleaks (@evleaks) September 11, 2013 If this turns out to be indeed the truth, then this will be the first dual-SIM Windows Phone ever released. Nokia Lumia 720 was launched in April. It's a sleek device...
Source: http://www.gsmarena.com/dualsim_nokia_lumia_720_might_be_in_the_works-news-6785.php