i feel recent 3 phones that lg launched are worth to be appreciated. I am mainly interested in not so expensive androids like lg optimus pad to be totally out of my budget so its not my cup of tea. Both optimus 3d and black were launched simultaneously but as per specs i feel lg optimus 3d is something more worthy of praise than optimus black.=D>
What i feel is no doubt both the phones have not so major differences but to those individuals who wish to acquire best will definitely place black aside.
Lg optimus 3d offers dual lens camera as to capture 3d images and videos.
Thats what black lacks and processor differs as well. Both are having 4 inch display screen but optimus black claims its display screen to have a bright quality than any other lcd based androids possess. Even lg claims optimus 3d to be the first phone with 4 inch stereoscopic LCD screen.