Is the Xperia z3 D6646 a dual sim phone

[AC Question]

Where do you insert the second sim

 

[B. Diddy]

Welcome to Android Central! It looks like the Z3 Dual is the D6632 or D6633, not the D6646. Sony Xperia Z3 Dual - Full phone specifications

Also see this discussion, where someone says there isn't a D6646, but rather a D6616: http://forums.androidcentral.com/sony-xperia-z3/441496-sony-xperia-z3-d6646-d6633.html