<s>
The	O
iPad	B-Device
Mini	I-Device
4	I-Device
(	O
stylized	O
and	O
marketed	O
as	O
iPad	B-Device
mini	I-Device
4	I-Device
)	O
is	O
the	O
fourth-generation	O
iPad	B-Device
Mini	I-Device
tablet	B-Device
computer	I-Device
designed	O
,	O
developed	O
and	O
marketed	O
by	O
Apple	O
Inc	O
.	O
</s>
<s>
It	O
was	O
announced	O
along	O
with	O
the	O
iPad	B-Device
Pro	I-Device
on	O
September	O
9	O
,	O
2015	O
,	O
and	O
released	O
the	O
same	O
day	O
.	O
</s>
<s>
The	O
iPad	B-Device
Mini	I-Device
4	I-Device
,	O
which	O
replaced	O
the	O
iPad	B-Device
Mini	I-Device
3	I-Device
,	O
was	O
discontinued	O
on	O
March	O
18	O
,	O
2019	O
,	O
when	O
it	O
was	O
replaced	O
by	O
the	O
fifth-generation	B-Device
iPad	I-Device
Mini	I-Device
.	O
</s>
<s>
It	O
features	O
most	O
of	O
the	O
hardware	O
similar	O
to	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
including	O
its	O
laminated	O
display	O
and	O
design	O
.	O
</s>
<s>
The	O
iPad	B-Device
Mini	I-Device
4	I-Device
was	O
announced	O
during	O
the	O
"	O
Hey	O
Siri	O
"	O
Apple	O
Special	O
Event	O
on	O
September	O
9	O
,	O
2015	O
,	O
alongside	O
other	O
new	O
or	O
refreshed	O
products	O
,	O
including	O
the	O
iPad	B-Device
Pro	I-Device
,	O
the	O
iPhone	B-Operating_System
6s	I-Operating_System
,	O
and	O
the	O
Apple	B-Device
TV	I-Device
.	O
</s>
<s>
However	O
,	O
there	O
was	O
minimal	O
focus	O
directly	O
on	O
the	O
new	O
device	O
,	O
with	O
only	O
a	O
brief	O
mention	O
at	O
the	O
end	O
of	O
the	O
iPad	B-Device
Pro	I-Device
portion	O
of	O
the	O
keynote	O
.	O
</s>
<s>
The	O
iPad	B-Device
Mini	I-Device
4	I-Device
ships	O
with	O
the	O
iOS	B-Operating_System
9	I-Operating_System
operating	O
system	O
pre-installed	O
,	O
and	O
was	O
the	O
first	O
device	O
to	O
do	O
so	O
.	O
</s>
<s>
With	O
an	O
additional	O
1GB	O
of	O
RAM	B-Architecture
compared	O
to	O
the	O
previous	O
generations	O
 '	O
Mini	O
,	O
the	O
iPad	B-Device
Mini	I-Device
4	I-Device
is	O
capable	O
of	O
utilizing	O
the	O
Slide	O
Over	O
,	O
Split	O
View	O
and	O
Picture	O
in	O
Picture	O
multitasking	O
functions	O
in	O
iOS	B-Operating_System
9	I-Operating_System
.	O
</s>
<s>
The	O
device	O
is	O
compatible	O
with	O
iOS	B-Operating_System
9.1	I-Operating_System
,	O
which	O
was	O
released	O
on	O
October	O
21	O
,	O
2015	O
,	O
which	O
adds	O
the	O
News	O
app	O
for	O
the	O
UK	O
and	O
Australia	O
as	O
well	O
as	O
additional	O
emoji	O
and	O
other	O
bug	O
fixes	O
.	O
</s>
<s>
It	O
was	O
revealed	O
at	O
WWDC	O
2019	O
that	O
the	O
iPad	B-Device
Mini	I-Device
4	I-Device
would	O
support	O
iPadOS	B-Operating_System
,	O
despite	O
rumours	O
saying	O
that	O
it	O
would	O
n't	O
.	O
</s>
<s>
It	O
does	O
lack	O
the	O
support	O
for	O
some	O
features	O
though	O
such	O
as	O
Memoji	O
Stickers	O
,	O
Apple	O
's	O
ARKit	O
based	O
applications	O
and	O
support	O
for	O
Sidecar	O
in	O
macOS	B-Device
Catalina	I-Device
,	O
due	O
to	O
it	O
having	O
the	O
Apple	O
A8	O
Processor	O
.	O
</s>
<s>
Apart	O
from	O
this	O
,	O
most	O
of	O
the	O
features	O
that	O
were	O
introduced	O
in	O
iPadOS	B-Operating_System
will	O
work	O
with	O
this	O
iPad	B-Device
,	O
including	O
support	O
for	O
external	O
USB	B-Protocol
drives	O
(	O
using	O
the	O
camera	O
connection	O
kits	O
)	O
,	O
the	O
redesigned	O
split	O
screen	B-Device
and	O
multitasking	O
interface	O
(	O
with	O
support	O
for	O
two	O
apps	O
to	O
be	O
open	O
at	O
once	O
)	O
and	O
support	O
for	O
Haptic	O
Touch	O
(	O
no	O
haptic	O
feedback	O
will	O
be	O
felt	O
as	O
the	O
iPad	B-Device
family	O
do	O
n't	O
have	O
Taptic	O
Engines	O
)	O
.	O
</s>
<s>
iPadOS	B-Operating_System
14	O
and	O
15	O
was	O
also	O
supported	O
,	O
albeit	O
with	O
less	O
features	O
.	O
</s>
<s>
It	O
was	O
revealed	O
in	O
WWDC	O
2022	O
that	O
iPadOS	B-Operating_System
16	I-Operating_System
wo	O
n't	O
be	O
supported	O
on	O
the	O
Mini	O
4	O
,	O
along	O
with	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
.	O
</s>
<s>
The	O
iPad	B-Device
Mini	I-Device
4	I-Device
was	O
the	O
first	O
major	O
redesign	O
of	O
the	O
iPad	B-Device
Mini	I-Device
line	O
,	O
with	O
a	O
slightly	O
taller	O
and	O
wider	O
body	O
(	O
though	O
with	O
no	O
increase	O
in	O
screen	B-Device
size	O
)	O
compared	O
to	O
the	O
iPad	B-Operating_System
Mini	I-Operating_System
2	I-Operating_System
and	O
Mini	O
3	O
.	O
</s>
<s>
There	O
is	O
also	O
a	O
much	O
thinner	O
design	O
,	O
with	O
the	O
device	O
mirroring	O
the	O
depth	O
of	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
at	O
6.1	O
millimeters	O
.	O
</s>
<s>
Due	O
to	O
the	O
redesign	O
,	O
this	O
device	O
is	O
incompatible	O
with	O
cases	O
that	O
would	O
otherwise	O
work	O
with	O
the	O
iPad	B-Operating_System
Mini	I-Operating_System
2	I-Operating_System
or	O
iPad	B-Device
Mini	I-Device
3	I-Device
.	O
</s>
<s>
Unlike	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
,	O
there	O
is	O
no	O
leather	O
Smart	O
Case	O
made	O
by	O
Apple	O
for	O
the	O
device	O
.	O
</s>
<s>
The	O
mute	O
switch	O
was	O
removed	O
,	O
as	O
was	O
done	O
for	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
.	O
</s>
<s>
As	O
with	O
the	O
iPad	B-Device
Mini	I-Device
3	I-Device
,	O
the	O
iPad	B-Device
Mini	I-Device
4	I-Device
is	O
available	O
in	O
three	O
colors	O
:	O
Space	O
Gray	O
,	O
Silver	O
,	O
and	O
Gold	O
.	O
</s>
<s>
While	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
and	O
iPad	B-Device
Mini	I-Device
3	I-Device
were	O
both	O
released	O
in	O
October	O
2014	O
,	O
the	O
Mini	O
3	O
carried	O
over	O
the	O
Mini	O
2	O
's	O
internals	O
including	O
the	O
A7	O
processor	O
in	O
place	O
of	O
the	O
hardware	O
found	O
in	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
.	O
</s>
<s>
The	O
iPad	B-Device
Mini	I-Device
4	I-Device
features	O
upgraded	O
hardware	O
closer	O
in	O
specs	O
to	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
.	O
</s>
<s>
Along	O
with	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
,	O
there	O
are	O
2GB	O
of	O
RAM	B-Architecture
,	O
allowing	O
the	O
device	O
to	O
support	O
the	O
advanced	O
multitasking	O
features	O
made	O
available	O
with	O
the	O
iOS	B-Operating_System
9	I-Operating_System
operating	O
system	O
.	O
</s>
<s>
Like	O
the	O
iPad	B-Device
Mini	I-Device
3	I-Device
that	O
came	O
before	O
it	O
,	O
the	O
iPad	B-Device
Mini	I-Device
4	I-Device
is	O
capable	O
of	O
making	O
mobile	O
payments	O
via	O
Apple	B-Application
Pay	I-Application
in	O
combination	O
with	O
the	O
Touch	O
ID	O
sensor	O
,	O
although	O
this	O
can	O
only	O
be	O
done	O
in	O
apps	O
as	O
the	O
device	O
lacks	O
the	O
NFC	O
antenna	O
required	O
for	O
payments	O
at	O
a	O
merchant	O
terminal	O
.	O
</s>
<s>
With	O
iOS	O
10	O
,	O
Apple	B-Application
Pay	I-Application
is	O
supported	O
within	O
the	O
Safari	O
app	O
.	O
</s>
<s>
The	O
device	O
shares	O
the	O
same	O
camera	O
module	O
as	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
with	O
an	O
8	O
megapixel	O
camera	O
with	O
a	O
ƒ/2.4	O
aperture	O
.	O
</s>
<s>
The	O
screen	B-Device
is	O
the	O
same	O
Retina	B-Operating_System
Display	I-Operating_System
that	O
has	O
featured	O
since	O
the	O
iPad	B-Operating_System
Mini	I-Operating_System
2	I-Operating_System
,	O
although	O
it	O
is	O
fully	O
laminated	O
(	O
also	O
like	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
)	O
and	O
contains	O
an	O
anti-reflective	O
coating	O
,	O
resulting	O
in	O
drastically	O
improved	O
picture	O
quality	O
compared	O
to	O
its	O
predecessors	O
.	O
</s>
<s>
The	O
iPad	B-Device
Mini	I-Device
4	I-Device
display	O
features	O
much	O
improved	O
color	O
accuracy	O
due	O
to	O
the	O
increase	O
to	O
101%	O
sRGB	O
Color	O
Gamut	O
compared	O
to	O
only	O
~	O
62%	O
on	O
the	O
previous	O
models	O
.	O
</s>
<s>
As	O
with	O
its	O
predecessor	O
,	O
the	O
iPad	B-Device
Mini	I-Device
4	I-Device
was	O
available	O
with	O
storage	O
options	O
of	O
16	O
,	O
32	O
,	O
64	O
or	O
128GB	O
,	O
although	O
upon	O
the	O
introduction	O
of	O
the	O
iPad	B-Device
(	O
5th	B-Device
generation	I-Device
)	O
in	O
March	O
2017	O
,	O
only	O
the	O
128GB	O
variation	O
remained	O
available	O
.	O
</s>
<s>
Although	O
the	O
Apple	B-Device
Pencil	I-Device
was	O
released	O
alongside	O
the	O
iPad	B-Device
Mini	I-Device
4	I-Device
in	O
September	O
2015	O
,	O
it	O
was	O
exclusively	O
compatible	O
with	O
the	O
iPad	B-Device
Pro	I-Device
released	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
Pencil	B-Device
support	O
on	O
the	O
iPad	B-Device
Mini	I-Device
did	O
not	O
arrive	O
until	O
the	O
5th	B-Device
generation	I-Device
in	O
2019	O
.	O
</s>
<s>
Reviews	O
have	O
generally	O
been	O
positive	O
,	O
with	O
The	O
Verge	O
giving	O
the	O
iPad	B-Device
Mini	I-Device
4	I-Device
a	O
9/10	O
,	O
praising	O
the	O
display	O
,	O
fast	O
performance	O
,	O
great	O
camera	O
,	O
and	O
multitasking	O
but	O
disappointed	O
with	O
the	O
speakers	O
and	O
chamfered	O
edges	O
.	O
</s>
<s>
CNET	O
also	O
praised	O
the	O
new	O
"	O
more	O
vivid	O
"	O
display	O
and	O
the	O
slimmer	O
design	O
as	O
well	O
as	O
the	O
new	O
features	O
in	O
iOS	B-Operating_System
9	I-Operating_System
that	O
the	O
device	O
can	O
utilize	O
.	O
</s>
<s>
However	O
,	O
they	O
also	O
criticized	O
it	O
for	O
being	O
more	O
expensive	O
than	O
other	O
8-inch	O
tablets	B-Device
and	O
the	O
multitasking	O
features	O
not	O
working	O
as	O
well	O
on	O
the	O
smaller	O
screen	B-Device
.	O
</s>
<s>
There	O
was	O
also	O
criticism	O
of	O
the	O
iPad	B-Device
Mini	I-Device
4	I-Device
's	O
A8	O
processor	O
which	O
was	O
a	O
year	O
old	O
,	O
regarded	O
as	O
a	O
"	O
step	O
down	O
"	O
from	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
's	O
A8X	O
and	O
iPhone	B-Operating_System
6S	I-Operating_System
's	O
A9	O
processors	O
.	O
</s>
<s>
This	O
contrasts	O
with	O
the	O
iPad	B-Operating_System
Mini	I-Operating_System
2	I-Operating_System
which	O
featured	O
the	O
A7	O
processor	O
used	O
in	O
the	O
iPad	B-Operating_System
Air	I-Operating_System
and	O
iPhone	O
5S	O
when	O
they	O
were	O
released	O
in	O
Fall	O
2013	O
.	O
</s>
