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S
Epic’s mobile security expert is explaining the layers of a phone.

We’re looking at a slide titled “Android Operating System” which contains these stacked elements:

“User Apps”

“AOSP Middleware” and “GMS Middleware” and “OEM & SOC Middleware”

“AOSP Kernel”

and at the bottom, “Hardware.” The AOSP and middleware items are all within an “Operating System” bracket.