<s>
A	O
home	B-Operating_System
screen	I-Operating_System
,	O
homescreen	O
,	O
or	O
start	O
screen	O
,	O
is	O
the	O
main	O
screen	O
on	O
a	O
device	O
or	O
computer	O
program	O
.	O
</s>
<s>
Home	B-Operating_System
screens	I-Operating_System
are	O
not	O
identical	O
because	O
users	O
rearrange	O
icons	O
as	O
they	O
please	O
,	O
and	O
home	B-Operating_System
screens	I-Operating_System
often	O
differ	O
across	O
mobile	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Almost	O
every	O
smartphone	B-Application
has	O
some	O
form	O
of	O
home	B-Operating_System
screen	I-Operating_System
,	O
which	O
typically	O
displays	O
links	O
to	O
applications	B-Application
,	O
settings	O
,	O
and	O
notifications	O
.	O
</s>
<s>
Home	B-Operating_System
screens	I-Operating_System
usually	O
consist	O
of	O
a	O
grid	O
of	O
application	O
links	O
or	O
shortcuts	O
that	O
can	O
often	O
be	O
arranged	O
over	O
multiple	O
pages	O
,	O
and	O
serve	O
as	O
the	O
user	O
's	O
main	O
method	O
of	O
accessing	O
phone	O
functions	O
.	O
</s>
<s>
Home	B-Operating_System
screens	I-Operating_System
also	O
tend	O
to	O
include	O
a	O
dock	O
along	O
an	O
edge	O
of	O
the	O
screen	O
,	O
where	O
application	O
links	O
can	O
be	O
stored	O
and	O
accessed	O
from	O
any	O
page	O
on	O
the	O
home	B-Operating_System
screen	I-Operating_System
.	O
</s>
<s>
Most	O
operating	O
systems	O
allow	O
users	O
to	O
add	O
folders	B-Application
to	O
the	O
home	B-Operating_System
screen	I-Operating_System
in	O
order	O
to	O
further	O
organize	O
application	O
links	O
.	O
</s>
<s>
Some	O
home	B-Operating_System
screens	I-Operating_System
may	O
also	O
include	O
a	O
panel	O
where	O
push	B-General_Concept
notifications	I-General_Concept
are	O
displayed	O
or	O
select	O
system	O
settings	O
can	O
be	O
accessed	O
.	O
</s>
<s>
In	O
addition	O
to	O
applications	B-Application
links	O
,	O
many	O
home	B-Operating_System
screens	I-Operating_System
are	O
also	O
capable	O
of	O
displaying	O
ambient	O
information	O
,	O
such	O
as	O
live	O
tiles	O
on	O
Windows	B-Protocol
Phone	I-Protocol
or	O
widgets	O
on	O
Android	B-Application
.	O
</s>
<s>
Such	O
tiles	O
or	O
widgets	O
may	O
link	O
to	O
applications	B-Application
,	O
however	O
they	O
differ	O
from	O
traditional	O
links	O
in	O
that	O
they	O
show	O
current	O
,	O
dynamic	O
information	O
instead	O
of	O
a	O
static	O
icon	O
.	O
</s>
<s>
Although	O
most	O
home	B-Operating_System
screens	I-Operating_System
have	O
a	O
similar	O
structure	O
,	O
not	O
all	O
are	O
designed	O
in	O
common	O
.	O
</s>
<s>
Two	O
notable	O
examples	O
of	O
less-common	O
home	B-Operating_System
screens	I-Operating_System
paradigms	O
include	O
Siri	B-Application
and	O
WebOS	B-Operating_System
.	O
</s>
<s>
The	O
former	O
is	O
Apple	O
's	O
natural	B-General_Concept
language	I-General_Concept
user	I-General_Concept
interface	I-General_Concept
,	O
which	O
performs	O
functions	O
similar	O
to	O
more	O
traditional	O
home	B-Operating_System
screens	I-Operating_System
such	O
as	O
opening	O
applications	B-Application
,	O
displaying	O
relevant	O
data	O
,	O
and	O
managing	O
phone	O
settings	O
.	O
</s>
<s>
The	O
latter	O
is	O
notable	O
for	O
its	O
use	O
of	O
entirely	O
dynamic	O
application	O
icons	O
that	O
mimic	O
the	O
current	O
state	O
of	O
the	O
application	O
,	O
similar	O
to	O
task	B-General_Concept
managers	I-General_Concept
on	O
other	O
mobile	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Although	O
most	O
mobile	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
include	O
a	O
default	O
home	B-Operating_System
screen	I-Operating_System
,	O
some	O
devices	O
also	O
allow	O
the	O
user	O
to	O
replace	O
the	O
native	B-Language
home	B-Operating_System
screen	I-Operating_System
with	O
a	O
different	O
application	O
or	O
third-party	B-General_Concept
home	B-Operating_System
screen	I-Operating_System
,	O
allowing	O
for	O
additional	O
home	B-Operating_System
screen	I-Operating_System
paradigms	O
.	O
</s>
<s>
One	O
of	O
the	O
first	O
examples	O
of	O
a	O
home	B-Operating_System
screen	I-Operating_System
can	O
be	O
found	O
on	O
the	O
PalmPilot	B-Device
,	O
which	O
debuted	O
in	O
1997	O
.	O
</s>
<s>
Early	O
home	B-Operating_System
screens	I-Operating_System
were	O
often	O
less	O
customizable	O
than	O
current	O
iterations	O
.	O
</s>
<s>
For	O
example	O
,	O
early	O
versions	O
of	O
iOS	B-Application
did	O
not	O
allow	O
users	O
to	O
rearrange	O
applications	B-Application
on	O
the	O
home	B-Operating_System
screen	I-Operating_System
or	O
change	O
the	O
background	O
image	O
.	O
</s>
<s>
Because	O
home	B-Operating_System
screens	I-Operating_System
often	O
serve	O
as	O
the	O
main	O
method	O
for	O
interacting	O
with	O
mobile	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
,	O
they	O
tend	O
to	O
change	O
slowly	O
,	O
if	O
at	O
all	O
,	O
across	O
updates	O
to	O
the	O
operating	O
system	O
.	O
</s>
