Yes it support dual sim dual active but hybrid sim slot
but at present you can use only 1 4g volte sim and another sim will go to 3g/2g mode
but as n7+ support QSD 660 processor, a manual OTA update can give dual volte dual active support.
My one received from Nokia doesnt seem to support it. im trying to get responses from Nokia to get a replacement for one that is if there are meant to be 2 vairants. as thats what i paid for not this undercut version!!