All language subtitles for 10_Mobile Operating Systems

Some mobile devices are

general-purpose
computing devices

like tablets or smartphones.

Other mobile devices like
fitness monitors, e-readers,

and smartwatches, are designed

to do a smaller set of tasks.

General-purpose mobile
devices generally use

a mobile operating system that's

derived from other
operating systems.

For example Android
is derived from Linux

and iOS shares a lot of
core components with MacOS.

So how are mobile
operating systems

different from the OSs
that they're based on?

Mobile devices run
on batteries that

have to be recharged
or replaced on

a regular basis and
you want the device

to last as long as
possible between charges.

So mobile operating systems are

optimized to use as
little power as possible,

for example, by removing

OS features and applications

that the mobile
device doesn't need.

We also use motion, touch,

and voice to interact
with mobile devices in

very different ways from
desktop or server computers.

This requires adding
device drivers

and support to the
mobile operating system.

More specialized mobile devices

like fitness
trackers, e-readers,

and GPS devices,
often use custom

OSs that are optimized

for what the device
is designed to do.

These devices are even
more slimmed down to run

on very minimal hardware with
very minimal battery power.

They might also be built using

specialized chips
and peripherals,

which more general-purpose
operating systems

don't know how to run on.