As for me is the Windows Phone mobile OS of choice and I want to dual SIM I grasped early on the Lumia 630 Dual. The smaller and lower resolution display compared to my previous ATIV S can get over well, in terms of performance, there is nothing to complain about despite a smaller memory. Painful are then but the lack of front camera, photo light and brightness sensor. The absence of the camera button is not a drama, but during navigation shall be changed as light changes into the Notification Center to adapt the lighting nuisance. The basic operation is as usual top, the dual SIM handling properly - the battery power, voice and reception quality spotless. With photo light, light sensor and front camera, there'd be me 5 stars.
