[DrewADesign]

Your source image is over a decade out of date. The current calculator has no simulated physical button contour, no simulated plastic face plate, no simulated LCD layout, or any other attempt to be mimic the materials and construction of a physical object. It uses a layout similar to all other calculators because there's no reason to make people change their mental model of entering numbers for computation. Same with the current iPhone dialer. It makes no attempt to appear like a physical object rather than an abstracted method of inputting data. Skeuomorphic doesn't mean "being like something else that exists in some way." The first paragraph from Wikipedia:

A skeuomorph (also spelled skiamorph, /ˈskjuːəˌmɔːrf, ˈskjuːoʊ-/)[1][2] is a derivative object that retains ornamental design cues (attributes) from structures that were necessary in the original.[3] Skeuomorphs are typically used to make something new feel familiar in an effort to speed understanding and acclimation. They employ elements that, while essential to the original object, serve no pragmatic purpose in the new system. Examples include pottery embellished with imitation rivets reminiscent of similar pots made of metal[4] and a software calendar that imitates the appearance of binding on a paper desk calendar.[5]

So a software calendar using the same layout as a paper calendar doesn't mean it's skeuomorphic. It means it's a calendar. If you had a totally unique calendar interface model but added a sewn leather binding graphic along the top, it would be skeuomorphic.