A smartphone is a kind of small computer like
PDA and a mobile phone also capable of executing complex programs
on its internal computing hardware, as well as those programs
that are fed to it by a telephone network. It has the internal
resources to store information as well as act on the information.
A smartphone can typically access much more memory than a PDA
can.
Digital Rights Management (DRM) is also implemented in today's
smartphones in some form. DRM ensures that certain files can be
encrypted to prevent them from being forwarded to another device
or used by the built-in programs without an assigned encryption
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