We've reviewed a handful of Bluetooth keyboard cases for the iPhone in the past, but Solid Line Products' Slide & Type 2.0 ($75) seems to include the most, and the most unique, features of the bunch. The case itself is an unremarkable hard plastic shell that leaves the iPhone 4/4S's top and bottom edges exposed, but it's clearly not meant to be the star. That distinction belongs to the slide out keyboard: not only does it have a full QWERTY layout,…
