Lumia 630 is the first dual sim phone in WP OS. Does anybody have any idea which will be the next dual sim lumia? (I know Lumia 638 exists, if we can consider it as a different device. But what's next?) Lumia 730?
unknown smartphone is leaked which is mid- range lumia 830 or 730.. and definitely comes with dual sim option..
for pics of leaked phone check wpcentral news feeds