not inconceivable, your smartphone has many features that makes it a pretty vulnerable piece of technology, and there is no reason to believe that an entertainment device would resemble technology on board a space station or submarine even today. The computers aboard our current space fairing vessels don't at all resemble your smartphone, same thing with many of our ships and submarines.
Your smart phone is "capable" of entertainment and navigation for your purposes, not particularly for space fairing or military purposes.
I think you're confusing looks with capability. The navigational computers today, far exceed what your phone can do for THAT purpose, and look very crude compared to yours, in fact all the Apollo spacecraft have systems that look crude compared to your phone, and your phone is still inadequate to perform the function needed, cause your phone wasn't designed to do so.
I'd think in the future, with the applications discussed in STD, there is a degree with interface where "less is more" that I would think is more advantageous.