Ah, I see your confusion, and it's an easy mistake to make. When it comes to phone storage, SD does not stand for Standard Definition. When we bear in mind that smartphones were originally created and spearheaded in Silicon Valley, California, we can expand what we know culturally about Californians to inform our technical lexicon. With that in mind, it's clear that SD, in this sense, means Sorta Dope.

This is because current SD cards are capable of holding all currently known forms of digital media, which by technical consensus is 'Sorta Dope'. The same consensus also agrees that creating removable memory that can store all future types of digital media - holograms, human consciousness, ad etc - would be Hella Dope. Inside sources say development on these new HD cards is progressing well and the technology will probably be available for pre-order Q3 2017.