On the upside of the second issue is the availability of the Microsoft Type Cover, which has forced the Surface lines to be taken seriously as a laptop. Because of the Microsoft Type Cover, the Surface Pro 4 became quite easy to use as it felt more like a laptop than a tablet. The critic said that Microsoft should bring stability by addressing the keyboard / trackpad issue by giving a future update to the Type Cover.
With its official unveiling recently, critics generally saw the Surface Pro 4 as an evolutionary update over the Surface Pro 3, which is not necessarily a bad thing
The Surface Pro 4 is actually a more straightforward update to its predecessor. The screen is slightly larger which increased from 12 inches to 12.3 inches. The display resolution has also increased from 2160 x 1440 to 2736 x 1834. The device’s pixel density has also improved from 216 ppi to 267 ppi on the Surface Pro 4.
The general consensus about the Surface Pro 4 is that it is a refined and polished version of the Surface concept, with some of the basic compromises inherent to the form factor. Most critics actually think that the Surface Pro 4 is the best iteration of the Surface concept to date.