<s>
The	O
iPhone	B-Operating_System
's	O
hardware	B-Architecture
is	O
designed	O
by	O
Apple	O
Inc	O
.	O
Apple	O
directly	O
sub-contracts	O
hardware	B-Architecture
production	O
to	O
external	O
OEM	O
companies	O
,	O
maintaining	O
a	O
high	O
degree	O
of	O
control	O
over	O
the	O
end	O
product	O
.	O
</s>
<s>
The	O
touchscreen	B-Device
on	O
the	O
iPhone	B-Operating_System
has	O
increased	O
in	O
size	O
several	O
times	O
over	O
the	O
years	O
,	O
from	O
3.5	O
inches	O
on	O
the	O
original	B-Operating_System
iPhone	I-Operating_System
to	O
iPhone	B-Operating_System
4S	I-Operating_System
,	O
to	O
the	O
current	O
6.1	O
and	O
6.7	O
inches	O
on	O
the	O
iPhone	B-Operating_System
14	I-Operating_System
and	O
14	B-Operating_System
Pro	I-Operating_System
series	O
.	O
</s>
<s>
The	O
touch	O
and	O
gesture	O
features	O
of	O
the	O
iPhone	B-Operating_System
are	O
based	O
on	O
technology	O
originally	O
developed	O
by	O
FingerWorks	O
.	O
</s>
<s>
Most	O
gloves	O
and	O
styli	B-Device
prevent	O
the	O
necessary	O
electrical	O
conductivity	O
;	O
although	O
capacitive	O
styli	B-Device
can	O
be	O
used	O
with	O
iPhone	B-Operating_System
's	O
finger-touch	O
screen	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
3GS	I-Operating_System
and	O
later	O
also	O
feature	O
a	O
fingerprint-resistant	O
oleophobic	O
coating	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
has	O
a	O
minimal	O
hardware	B-Architecture
user	O
interface	O
,	O
with	O
most	O
models	O
featuring	O
five	O
buttons	O
.	O
</s>
<s>
However	O
,	O
new	O
models	O
which	O
include	O
Apple	O
's	O
fingerprint	B-Algorithm
recognition	O
feature	O
Touch	O
ID	O
(	O
which	O
use	O
the	O
Home	O
button	O
as	O
the	O
fingerprint	B-Algorithm
sensor	O
)	O
have	O
no	O
symbol	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
and	O
later	O
,	O
with	O
the	O
exception	O
of	O
the	O
iPhone	B-Operating_System
SE	I-Operating_System
series	O
,	O
do	O
not	O
have	O
a	O
Home	O
button	O
,	O
and	O
include	O
Face	O
ID	O
in	O
place	O
of	O
Touch	O
ID	O
,	O
a	O
facial	O
recognition	O
authentication	O
method	O
.	O
</s>
<s>
A	O
multi-function	O
sleep/wake	O
button	O
is	O
located	O
on	O
top	O
of	O
the	O
device	O
on	O
earlier	O
models	O
,	O
and	O
on	O
right	O
of	O
the	O
device	O
from	O
iPhone	B-Operating_System
6	I-Operating_System
onwards	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
4	I-Operating_System
has	O
two	O
separate	O
circular	O
buttons	O
to	O
increase	O
and	O
decrease	O
the	O
volume	O
;	O
all	O
earlier	O
models	O
house	O
two	O
switches	O
under	O
a	O
single	O
plastic	O
panel	O
,	O
known	O
as	O
a	O
rocker	O
switch	O
,	O
which	O
could	O
reasonably	O
be	O
counted	O
as	O
either	O
one	O
or	O
two	O
buttons	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
6S	I-Operating_System
and	I-Operating_System
6S	I-Operating_System
Plus	I-Operating_System
,	O
introduced	O
in	O
2015	O
,	O
feature	O
3D	B-Device
Touch	I-Device
displays	O
which	O
allow	O
the	O
screen	O
to	O
recognize	O
how	O
hard	O
it	O
is	O
being	O
pressed	O
using	O
pressure-sensitive	O
multi-touch	O
technology	O
,	O
and	O
a	O
new	O
Taptic	O
Engine	O
to	O
provide	O
haptic	O
feedback	O
.	O
</s>
<s>
In	O
addition	O
to	O
visual	O
cues	O
,	O
3D	B-Device
Touch	I-Device
uses	O
the	O
Taptic	O
Engine	O
to	O
provide	O
a	O
tactile	O
sensation	O
relative	O
to	O
the	O
force	O
being	O
applied	O
to	O
the	O
display	O
to	O
indicate	O
to	O
the	O
user	O
that	O
a	O
light	O
or	O
deep	O
press	O
action	O
has	O
been	O
completed	O
.	O
</s>
<s>
All	O
iPhones	B-Operating_System
starting	O
with	O
the	O
iPhone	B-Operating_System
6s	I-Operating_System
(	O
with	O
the	O
exception	O
of	O
the	O
first-generation	B-Operating_System
iPhone	I-Operating_System
SE	I-Operating_System
and	O
iPhone	B-Operating_System
XR	I-Operating_System
)	O
had	O
this	O
feature	O
.	O
</s>
<s>
Starting	O
in	O
2019	O
however	O
,	O
3D	B-Device
Touch	I-Device
was	O
omitted	O
on	O
all	O
iPhones	B-Operating_System
starting	O
with	O
the	O
iPhone	B-Operating_System
11	I-Operating_System
and	O
11	B-Operating_System
Pro	I-Operating_System
series	O
,	O
and	O
its	O
software	O
features	O
were	O
removed	O
from	O
iOS	B-Operating_System
13	I-Operating_System
and	O
later	O
in	O
favour	O
of	O
Haptic	B-Device
Touch	I-Device
.	O
</s>
<s>
Haptic	B-Device
Touch	I-Device
retains	O
much	O
of	O
the	O
functionality	O
of	O
3D	B-Device
Touch	I-Device
but	O
cannot	O
detect	O
pressure	O
,	O
as	O
the	O
display	O
lacks	O
integrated	O
capacitive	O
sensors	O
.	O
</s>
<s>
iPad	B-Device
models	O
that	O
can	O
update	O
to	O
iPadOS	B-Operating_System
13	I-Operating_System
,	O
along	O
with	O
the	O
first-generation	B-Operating_System
iPhone	I-Operating_System
SE	I-Operating_System
and	O
seventh-generation	B-Operating_System
iPod	I-Operating_System
touch	I-Operating_System
,	O
which	O
previously	O
did	O
not	O
support	O
3D	B-Device
Touch	I-Device
,	O
simultaneously	O
gained	O
similar	O
Haptic	B-Device
Touch	I-Device
functionality	O
with	O
the	O
iOS	B-Operating_System
13	I-Operating_System
and	O
iPadOS	B-Operating_System
13	I-Operating_System
updates	O
,	O
although	O
without	O
any	O
haptic	O
feedback	O
.	O
</s>
<s>
iPhones	B-Operating_System
feature	O
a	O
number	O
of	O
sensors	O
,	O
which	O
are	O
used	O
to	O
adjust	O
the	O
screen	O
based	O
on	O
operating	O
conditions	O
,	O
enable	O
motion-controlled	O
games	O
,	O
location-based	B-Application
services	I-Application
,	O
unlock	O
the	O
phone	O
,	O
and	O
authenticate	O
purchases	O
with	O
Apple	B-Application
Pay	I-Application
,	O
among	O
many	O
other	O
things	O
.	O
</s>
<s>
A	O
proximity	B-Device
sensor	I-Device
deactivates	O
the	O
display	O
and	O
touchscreen	B-Device
when	O
the	O
device	O
is	O
brought	O
near	O
the	O
face	O
during	O
a	O
call	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
's	O
proximity	B-Device
sensors	I-Device
detect	O
the	O
ear	O
and	O
switches	O
off	O
the	O
light	O
,	O
saving	O
power	O
and	O
stopping	O
the	O
face	O
from	O
unintentionally	O
pressing	O
buttons	O
.	O
</s>
<s>
A	O
phone	O
case	O
,	O
dirt	O
or	O
grime	O
,	O
or	O
a	O
software	O
problem	O
may	O
cause	O
the	O
proximity	B-Device
sensor	I-Device
to	O
malfunction	O
.	O
</s>
<s>
True	O
Tone	O
,	O
which	O
is	O
activated	O
by	O
default	O
,	O
uses	O
advanced	O
sensors	O
to	O
change	O
the	O
colour	O
and	O
intensity	O
of	O
the	O
iPhone	B-Operating_System
screen	O
to	O
match	O
the	O
ambient	O
light	O
,	O
resulting	O
in	O
more	O
natural-looking	O
images	O
.	O
</s>
<s>
The	O
ambient	O
light	O
sensor	O
decides	O
how	O
much	O
light	O
is	O
available	O
around	O
the	O
iPhone	B-Operating_System
and	O
other	O
apple	O
products	O
,	O
such	O
as	O
the	O
iPod	O
and	O
iPad	B-Device
.	O
</s>
<s>
Unlike	O
the	O
iPad	B-Device
,	O
the	O
iPhone	B-Operating_System
does	O
not	O
rotate	O
the	O
screen	O
when	O
turned	O
upside-down	O
,	O
with	O
the	O
Home	O
button	O
above	O
the	O
screen	O
,	O
unless	O
the	O
running	O
program	O
has	O
been	O
specifically	O
designed	O
to	O
do	O
so	O
.	O
</s>
<s>
The	O
3.0	O
update	O
added	O
landscape	O
support	O
for	O
still	O
other	O
applications	O
,	O
such	O
as	O
email	O
,	O
and	O
introduced	O
shaking	O
the	O
unit	O
as	O
a	O
form	O
of	O
input	O
(	O
generally	O
for	O
undo	B-Application
functionality	O
)	O
.	O
</s>
<s>
A	O
magnetometer	O
is	O
built-in	O
since	O
the	O
iPhone	B-Operating_System
3GS	I-Operating_System
,	O
which	O
is	O
used	O
to	O
measure	O
the	O
strength	O
and	O
direction	O
of	O
the	O
magnetic	O
field	O
in	O
the	O
vicinity	O
of	O
the	O
device	O
.	O
</s>
<s>
Since	O
the	O
iPhone	B-Operating_System
3GS	I-Operating_System
,	O
the	O
iPhone	B-Operating_System
also	O
features	O
a	O
Compass	O
app	O
,	O
which	O
was	O
unique	O
at	O
time	O
of	O
release	O
,	O
showing	O
a	O
compass	O
that	O
points	O
in	O
the	O
direction	O
of	O
the	O
magnetic	O
field	O
.	O
</s>
<s>
Since	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
,	O
the	O
4th	O
Generation	O
iPod	B-Operating_System
touch	I-Operating_System
,	O
and	O
the	O
iPad	B-Device
2	O
,	O
a	O
three-axis	O
gyroscope	O
was	O
included	O
.	O
</s>
<s>
It	O
is	O
compatible	O
with	O
iPhone	B-Operating_System
,	O
iPad	B-Device
,	O
and	O
iPod	B-Operating_System
touch	I-Operating_System
.	O
</s>
<s>
Some	O
previous	O
iPhone	B-Operating_System
models	O
contained	O
a	O
chip	O
capable	O
of	O
receiving	O
radio	O
signals	O
;	O
however	O
,	O
Apple	O
has	O
the	O
FM	O
radio	O
feature	O
switched	O
off	O
because	O
there	O
was	O
no	O
antenna	O
connected	O
to	O
the	O
chip	O
.	O
</s>
<s>
Later	O
iterations	O
of	O
the	O
iPhone	B-Operating_System
(	O
starting	O
with	O
the	O
iPhone	B-Application
7	I-Application
)	O
,	O
however	O
,	O
do	O
not	O
contain	O
radio	O
chips	O
at	O
all	O
.	O
</s>
<s>
Until	O
2017	O
,	O
iPhone	B-Operating_System
models	O
starting	O
from	O
iPhone	B-Operating_System
5S	I-Operating_System
(	O
excluding	O
the	O
iPhone	B-Operating_System
5C	I-Operating_System
)	O
featured	O
Apple	O
's	O
fingerprint	B-Algorithm
recognition	O
sensor	O
.	O
</s>
<s>
It	O
is	O
used	O
for	O
unlocking	O
the	O
device	O
and	O
authenticating	O
Apple	B-Application
Pay	I-Application
purchases	O
(	O
since	O
the	O
iPhone	B-Operating_System
6	I-Operating_System
)	O
using	O
Touch	O
ID	O
.	O
</s>
<s>
Touch	O
ID	O
has	O
been	O
replaced	O
by	O
Face	O
ID	O
(	O
with	O
the	O
exception	O
of	O
the	O
iPhone	B-Operating_System
SE	I-Operating_System
series	O
)	O
,	O
starting	O
with	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
.	O
</s>
<s>
The	O
fingerprint	B-Algorithm
sensor	O
uses	O
the	O
user	O
's	O
biometric	O
information	O
to	O
give	O
the	O
user	O
quick	O
access	O
to	O
the	O
device	O
.	O
</s>
<s>
It	O
's	O
compatible	O
with	O
iPhone	B-Operating_System
,	O
iPad	B-Device
,	O
and	O
iPod	B-Operating_System
touch	I-Operating_System
.	O
</s>
<s>
Included	O
on	O
the	O
iPhone	B-Operating_System
6	I-Operating_System
and	O
later	O
(	O
excluding	O
the	O
iPhone	B-Operating_System
SE	I-Operating_System
(	O
1st	O
generation	O
)	O
)	O
,	O
a	O
barometer	O
is	O
used	O
to	O
determine	O
air	O
pressure	O
and	O
elevation	O
.	O
</s>
<s>
Starting	O
with	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
,	O
a	O
facial	O
recognition	O
sensor	O
,	O
named	O
the	O
TrueDepth	O
camera	O
system	O
,	O
is	O
featured	O
.	O
</s>
<s>
It	O
can	O
also	O
be	O
used	O
for	O
Animojis	O
and	O
AR	B-General_Concept
.	O
</s>
<s>
On	O
the	O
bottom	O
of	O
the	O
iPhone	B-Operating_System
,	O
there	O
is	O
a	O
speaker	O
to	O
the	O
left	O
of	O
the	O
dock	B-Operating_System
connector	I-Operating_System
and	O
a	O
microphone	B-Algorithm
to	O
the	O
right	O
.	O
</s>
<s>
iPhone	B-Operating_System
models	O
from	O
the	O
first-generation	O
to	O
iPhone	B-Operating_System
4S	I-Operating_System
utilize	O
the	O
30-pin	O
dock	B-Operating_System
connector	I-Operating_System
,	O
while	O
iPhone	B-Operating_System
5	I-Operating_System
and	O
later	O
models	O
use	O
the	O
proprietary	O
Lightning	B-Architecture
connector	I-Architecture
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
4	I-Operating_System
includes	O
an	O
additional	O
microphone	B-Algorithm
at	O
the	O
top	O
of	O
the	O
unit	O
for	O
noise	O
cancellation	O
,	O
and	O
switches	O
the	O
placement	O
of	O
the	O
microphone	B-Algorithm
and	O
speaker	O
on	O
the	O
base	O
on	O
the	O
unit	O
—	O
the	O
speaker	O
is	O
on	O
the	O
right	O
.	O
</s>
<s>
Volume	O
controls	O
are	O
located	O
on	O
the	O
left	O
side	O
of	O
all	O
iPhone	B-Operating_System
models	O
and	O
as	O
a	O
slider	O
in	O
the	O
iPod	O
application	O
.	O
</s>
<s>
The	O
3.5mm	O
headphone	B-Device
jack	I-Device
was	O
located	O
either	O
on	O
the	O
top	O
left	O
corner	O
or	O
to	O
the	O
bottom	O
left	O
corner	O
of	O
the	O
iPhone	B-Operating_System
.	O
</s>
<s>
The	O
headphone	B-Device
socket	O
on	O
the	O
first-generation	B-Operating_System
iPhone	I-Operating_System
is	O
recessed	O
into	O
the	O
casing	O
,	O
making	O
it	O
incompatible	O
with	O
most	O
headsets	B-Device
without	O
the	O
use	O
of	O
an	O
adapter	O
.	O
</s>
<s>
The	O
iPhone	B-Application
7	I-Application
and	O
later	O
have	O
no	O
3.5mm	O
headphone	B-Device
jack	I-Device
,	O
and	O
instead	O
headsets	B-Device
must	O
connect	O
to	O
the	O
iPhone	B-Operating_System
by	O
Bluetooth	B-Protocol
,	O
use	O
Apple	O
's	O
Lightning	B-Architecture
connector	I-Architecture
,	O
or	O
(	O
for	O
traditional	O
headsets	B-Device
)	O
use	O
the	O
Lightning	B-Architecture
to	O
3.5mm	O
headphone	B-Device
jack	I-Device
adapter	O
.	O
</s>
<s>
This	O
adapter	O
was	O
included	O
on	O
several	O
models	O
of	O
iPhone	B-Operating_System
,	O
and	O
is	O
also	O
available	O
for	O
purchase	O
at	O
several	O
leading	O
retailers	O
.	O
</s>
<s>
The	O
built-in	O
Bluetooth	O
2.x	O
+EDR	O
supports	O
wireless	O
earpieces	O
and	O
headphones	B-Device
,	O
which	O
requires	O
the	O
HSP	O
profile	B-General_Concept
.	O
</s>
<s>
Stereo	O
audio	O
was	O
added	O
in	O
the	O
3.0	O
update	O
for	O
hardware	B-Architecture
that	O
supports	O
A2DP	O
.	O
</s>
<s>
While	O
non-sanctioned	O
third-party	O
solutions	O
exist	O
,	O
the	O
iPhone	B-Operating_System
does	O
not	O
officially	O
support	O
the	O
OBEX	B-General_Concept
file	O
transfer	O
protocol	B-General_Concept
.	O
</s>
<s>
The	O
lack	O
of	O
these	O
profiles	O
prevents	O
iPhone	B-Operating_System
users	O
from	O
exchanging	O
multimedia	O
files	O
,	O
such	O
as	O
pictures	O
,	O
music	O
and	O
videos	O
,	O
with	O
other	O
Bluetooth-enabled	O
cell	O
phones	O
.	O
</s>
<s>
Mirrored	O
display	O
output	O
is	O
supported	O
via	O
a	O
HDMI	O
adapter	O
,	O
connected	O
to	O
the	O
iPhone	B-Operating_System
Lightning	B-Architecture
connector	I-Architecture
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
features	O
an	O
internal	O
rechargeable	O
lithium-ion	O
battery	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
can	O
be	O
charged	O
when	O
connected	O
to	O
a	O
computer	O
for	O
syncing	O
across	O
the	O
included	O
USB	B-Protocol
to	O
dock	B-Operating_System
connector	I-Operating_System
cable	O
,	O
similar	O
to	O
charging	O
an	O
iPod	O
.	O
</s>
<s>
Alternatively	O
,	O
a	O
USB	B-Protocol
to	O
AC	O
adapter	O
(	O
or	O
"	O
wall	O
charger	O
"	O
,	O
also	O
included	O
)	O
can	O
be	O
connected	O
to	O
the	O
cable	O
to	O
charge	O
directly	O
from	O
an	O
AC	O
outlet	O
.	O
</s>
<s>
Some	O
models	O
of	O
the	O
iPhone	B-Operating_System
support	O
wireless	O
charging	O
.	O
</s>
<s>
A	O
distinction	O
to	O
Android	O
devices	O
is	O
that	O
connecting	O
an	O
iPhone	B-Operating_System
to	O
a	O
charger	O
while	O
powered	O
off	O
causes	O
it	O
to	O
power	O
on	O
rather	O
than	O
showing	O
a	O
battery	O
indicator	O
without	O
booting	O
.	O
</s>
<s>
The	O
battery	O
life	O
of	O
early	O
models	O
of	O
the	O
iPhone	B-Operating_System
has	O
been	O
criticized	O
by	O
several	O
technology	O
journalists	O
as	O
insufficient	O
and	O
less	O
than	O
Apple	O
's	O
claims	O
.	O
</s>
<s>
This	O
is	O
also	O
reflected	O
by	O
a	O
J	O
.	O
D	O
.	O
Power	O
and	O
Associates	O
customer	O
satisfaction	O
survey	O
,	O
which	O
gave	O
the	O
"	O
battery	O
aspects	O
"	O
of	O
the	O
iPhone	B-Operating_System
3G	I-Operating_System
its	O
lowest	O
rating	O
of	O
two	O
out	O
of	O
five	O
stars	O
.	O
</s>
<s>
Since	O
iOS	O
10.2.1	O
,	O
Apple	O
has	O
instituted	O
a	O
policy	B-Algorithm
of	O
employing	O
"	O
performance	O
management	O
"	O
techniques	O
(	O
including	O
CPU	B-General_Concept
throttling	I-General_Concept
)	O
on	O
iPhone	B-Operating_System
devices	O
whose	O
batteries	O
are	O
degraded	O
,	O
in	O
order	O
to	O
maintain	O
device	O
stability	O
and	O
prolong	O
their	O
lifespan	O
.	O
</s>
<s>
These	O
changes	O
came	O
in	O
the	O
wake	O
of	O
reported	O
issues	O
with	O
unexpected	O
shutdowns	O
on	O
certain	O
iPhone	B-Operating_System
models	O
following	O
the	O
release	O
of	O
iOS	O
10.1.1	O
.	O
</s>
<s>
In	O
response	O
to	O
criticism	O
over	O
the	O
practice	O
,	O
including	O
concerns	O
over	O
this	O
being	O
a	O
form	O
of	O
planned	O
obsolescence	O
,	O
Apple	O
announced	O
that	O
it	O
would	O
offer	O
discounted	O
battery	O
replacements	O
for	O
iPhone	B-Operating_System
6	I-Operating_System
and	O
newer	O
in	O
2018	O
,	O
and	O
that	O
it	O
would	O
add	O
additional	O
battery	O
health	O
information	O
on	O
a	O
future	O
version	O
of	O
iOS	O
(	O
iOS	B-Operating_System
11.3	I-Operating_System
,	O
which	O
also	O
allows	O
users	O
to	O
disable	O
this	O
throttling	O
)	O
.	O
</s>
<s>
The	O
first-generation	B-Operating_System
iPhone	I-Operating_System
(	O
2007	O
)	O
and	O
iPhone	B-Operating_System
3G	I-Operating_System
(	O
2008	O
)	O
have	O
a	O
fixed-focus	O
2.0-megapixel	O
camera	O
on	O
the	O
back	O
for	O
digital	O
photos	O
.	O
</s>
<s>
Video	O
recording	O
is	O
possible	O
on	O
the	O
first-generation	B-Operating_System
iPhone	I-Operating_System
and	O
iPhone	B-Operating_System
3G	I-Operating_System
via	O
a	O
third-party	O
app	O
available	O
on	O
the	O
App	O
Store	O
or	O
through	O
jailbreaking	O
.	O
</s>
<s>
iPhone	B-Operating_System
OS	O
2.0	O
introduced	O
geotagging	O
for	O
photos	O
.	O
</s>
<s>
The	O
2009	O
iPhone	B-Operating_System
3GS	I-Operating_System
has	O
a	O
3.2-megapixel	O
camera	O
with	O
autofocus	O
,	O
auto	B-Algorithm
white	I-Algorithm
balance	I-Algorithm
,	O
and	O
auto	O
macro	O
(	O
up	O
to	O
10cm	O
)	O
.	O
</s>
<s>
Manufactured	O
by	O
OmniVision	O
,	O
the	O
camera	O
can	O
also	O
capture	O
640×480	B-General_Concept
(	O
VGA	B-General_Concept
resolution	O
)	O
video	O
at	O
30	O
frames	O
per	O
second	O
.	O
</s>
<s>
The	O
video	O
can	O
be	O
cropped	O
on	O
the	O
iPhone	B-Operating_System
and	O
directly	O
uploaded	O
to	O
YouTube	B-General_Concept
or	O
other	O
services	O
.	O
</s>
<s>
The	O
2010	O
iPhone	B-Operating_System
4	I-Operating_System
introduced	O
a	O
5.0-megapixel	O
camera	O
(	O
2592×1936	O
pixels	O
)	O
that	O
can	O
record	O
video	O
at	O
720p	O
resolution	O
,	O
considered	O
high-definition	O
.	O
</s>
<s>
It	O
also	O
has	O
a	O
backside-illuminated	B-Algorithm
sensor	O
that	O
can	O
capture	O
pictures	O
in	O
low	O
light	O
and	O
an	O
LED	O
flash	O
that	O
can	O
stay	O
lit	O
while	O
recording	O
video	O
.	O
</s>
<s>
It	O
is	O
the	O
first	O
iPhone	B-Operating_System
that	O
can	O
natively	O
do	O
high	O
dynamic	O
range	O
photography	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
4	I-Operating_System
also	O
has	O
a	O
second	O
camera	O
on	O
the	O
front	O
that	O
can	O
take	O
VGA	B-General_Concept
photos	O
and	O
record	O
SD	B-Device
video	I-Device
.	O
</s>
<s>
The	O
2011	O
iPhone	B-Operating_System
4S	I-Operating_System
camera	O
can	O
shoot	O
8-MP	O
stills	O
and	O
1080p	O
video	O
can	O
be	O
accessed	O
directly	O
from	O
the	O
lock	O
screen	O
and	O
can	O
be	O
triggered	O
using	O
the	O
volume-up	O
button	O
as	O
a	O
shutter	O
trigger	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
5	I-Operating_System
(	O
2012	O
)	O
and	O
iPhone	B-Operating_System
4S	I-Operating_System
,	O
running	O
iOS	B-Operating_System
6	I-Operating_System
or	O
later	O
,	O
can	O
take	O
panoramas	O
using	O
the	O
built-in	O
camera	O
app	O
,	O
and	O
the	O
iPhone	B-Operating_System
5	I-Operating_System
can	O
also	O
take	O
still	O
photos	O
while	O
recording	O
video	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
5	I-Operating_System
camera	O
reportedly	O
shows	O
purple	O
haze	O
when	O
the	O
light	O
source	O
is	O
just	O
out	O
of	O
frame	O
,	O
although	O
Consumer	O
Reports	O
said	O
it	O
"	O
is	O
no	O
more	O
prone	O
to	O
purple	O
hazing	O
on	O
photos	O
shot	O
into	O
a	O
bright	O
light	O
source	O
than	O
its	O
predecessor	O
or	O
than	O
several	O
Android	O
phones	O
with	O
fine	O
cameras	O
...	O
"	O
</s>
<s>
The	O
camera	O
on	O
the	O
iPhone	B-Operating_System
5	I-Operating_System
are	O
protected	O
by	O
a	O
sapphire	B-Application
lens	O
cover	O
,	O
as	O
are	O
all	O
subsequent	O
models	O
.	O
</s>
<s>
In	O
2014	O
,	O
Apple	O
consumed	O
"	O
one-fourth	O
of	O
the	O
world	O
’s	O
supply	O
of	O
sapphire	B-Application
to	O
cover	O
the	O
iPhone	B-Device
’s	I-Device
camera	O
lens	O
and	O
fingerprint	B-Algorithm
reader.	O
"	O
</s>
<s>
The	O
quality	O
of	O
the	O
sapphire	B-Application
on	O
the	O
lens	O
cover	O
has	O
since	O
been	O
disputed	O
.	O
</s>
<s>
The	O
2013	O
iPhone	B-Operating_System
5S	I-Operating_System
widens	O
the	O
aperture	B-General_Concept
to	O
2.2	O
and	O
features	O
True	O
Tone	O
Flash	O
,	O
which	O
has	O
two	O
LED	O
lights	O
,	O
white	O
and	O
amber	O
,	O
that	O
will	O
improve	O
white	B-Algorithm
balance	I-Algorithm
in	O
low	O
light	O
by	O
separately	O
adjusting	O
in	O
1,000	O
combinations	O
of	O
brightness	O
level	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
5C	I-Operating_System
,	O
however	O
,	O
has	O
the	O
same	O
camera	O
hardware	B-Architecture
and	O
features	O
as	O
the	O
iPhone	B-Operating_System
5	I-Operating_System
.	O
</s>
<s>
The	O
2014	O
iPhone	B-Operating_System
6	I-Operating_System
and	I-Operating_System
6	I-Operating_System
Plus	I-Operating_System
include	O
phase	O
detection	O
autofocus	O
,	O
while	O
only	O
the	O
6	O
Plus	O
has	O
Optical	O
Image	O
Stabilization	O
.	O
</s>
<s>
Both	O
models	O
can	O
shoot	O
1080p	O
videos	O
at	O
60	O
frames	O
per	O
second	O
,	O
though	O
optical	O
image	O
stabilization	O
of	O
the	O
latter	O
is	O
unfunctional	O
during	O
video	O
recording	O
,	O
making	O
the	O
iPhone	B-Operating_System
6s	I-Operating_System
Plus	I-Operating_System
of	O
2015	O
the	O
first	O
with	O
optical	O
video	O
stabilization	O
.	O
</s>
<s>
With	O
the	O
release	O
of	O
iOS	B-Operating_System
8	I-Operating_System
,	O
the	O
iPhone	B-Operating_System
4S	I-Operating_System
and	O
later	O
models	O
can	O
now	O
shoot	O
time-lapse	O
videos	O
,	O
with	O
its	O
capability	O
to	O
switch	O
frame	O
rates	O
automatically	O
as	O
the	O
recording	O
increases	O
its	O
time	O
.	O
</s>
<s>
The	O
2015	O
iPhone	B-Operating_System
6S	I-Operating_System
and	I-Operating_System
6S	I-Operating_System
Plus	I-Operating_System
are	O
outfitted	O
with	O
a	O
12-megapixel	O
camera	O
,	O
with	O
4K	B-Architecture
video	I-Architecture
capability	O
at	O
30fps	O
,	O
both	O
for	O
the	O
first	O
time	O
on	O
iPhone	B-Operating_System
.	O
</s>
<s>
The	O
front-facing	O
camera	O
is	O
upgraded	O
from	O
1.3	O
to	O
5	O
megapixels	O
,	O
though	O
video	B-General_Concept
resolution	I-General_Concept
remains	O
at	O
720p	O
.	O
</s>
<s>
The	O
first-generation	B-Operating_System
iPhone	I-Operating_System
SE	I-Operating_System
(	O
2016	O
)	O
features	O
the	O
same	O
12	O
MP	O
camera	O
found	O
on	O
the	O
iPhone	B-Operating_System
6S	I-Operating_System
,	O
with	O
the	O
same	O
4K	B-Architecture
and	O
high	O
frame	O
rate	O
video	O
capability	O
,	O
but	O
its	O
front	O
camera	O
only	O
has	O
1.2	O
megapixels	O
,	O
like	O
the	O
iPhone	B-Operating_System
5	I-Operating_System
and	O
5s	B-Operating_System
.	O
</s>
<s>
The	O
2016	O
iPhone	B-Application
7	I-Application
features	O
optical	O
image	O
stabilization	O
on	O
its	O
rear	O
camera	O
,	O
a	O
feature	O
that	O
was	O
previously	O
exclusive	O
to	O
the	O
Plus	O
models	O
,	O
and	O
the	O
7	O
Plus	O
is	O
the	O
first	O
iPhone	B-Operating_System
to	O
feature	O
dual-lens	O
cameras	O
(	O
both	O
12	O
MP	O
)	O
.	O
</s>
<s>
Both	O
models	O
have	O
a	O
7	O
MP	O
front-facing	O
camera	O
,	O
with	O
video	B-General_Concept
resolution	I-General_Concept
increased	O
from	O
720p	O
to	O
1080p	O
.	O
</s>
<s>
The	O
second	O
camera	O
on	O
the	O
iPhone	B-Application
7	I-Application
Plus	I-Application
is	O
a	O
telephoto	O
lens	O
,	O
which	O
enables	O
2×	O
optical	O
zoom	O
,	O
allowing	O
for	O
the	O
level	O
of	O
detail	O
that	O
the	O
center	O
crop	O
of	O
a	O
48-megapixel	O
photo	O
with	O
the	O
non-tele	O
camera	O
's	O
field	O
of	O
view	O
would	O
have	O
.	O
</s>
<s>
The	O
camera	O
software	O
allows	O
up	O
to	O
10×	O
digital	B-Algorithm
zoom	I-Algorithm
.	O
</s>
<s>
The	O
rear	O
cameras	O
on	O
the	O
7	O
and	O
7	O
Plus	O
both	O
have	O
an	O
1.8	O
aperture	B-General_Concept
,	O
as	O
compared	O
to	O
2.2	O
on	O
the	O
iPhones	B-Operating_System
6	O
and	O
6	O
Plus	O
,	O
though	O
the	O
7	O
Plus	O
 '	O
tele	O
camera	O
has	O
2.8	O
and	O
is	O
not	O
optically	O
stabilized	O
.	O
</s>
<s>
The	O
2017	O
iPhone	B-Operating_System
8	I-Operating_System
camera	O
features	O
a	O
larger	O
sensor	O
and	O
a	O
newer	O
color	O
filter	O
.	O
</s>
<s>
The	O
camera	O
can	O
also	O
now	O
record	O
4K	B-Architecture
at	O
60	O
and	O
24	O
frames	O
per	O
second	O
,	O
slow-mo	O
at	O
1080p	O
in	O
240	O
frames	O
per	O
second	O
.	O
</s>
<s>
The	O
2017	O
iPhone	B-Operating_System
X	I-Operating_System
additionally	O
adds	O
optical	O
image	O
stabilization	O
to	O
the	O
telephoto	O
lens	O
,	O
and	O
the	O
TrueDepth	O
camera	O
system	O
introduces	O
Portrait	O
Mode	O
and	O
Portrait	O
Lighting	O
to	O
the	O
front	O
camera	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
XS	I-Operating_System
and	O
XR	B-Operating_System
series	O
have	O
an	O
updated	O
12MP	O
(	O
1/2.55	O
"	O
)	O
sensor	O
size	O
with	O
a	O
1.4	O
μm	O
pixel	O
size	O
.	O
</s>
<s>
The	O
XS	O
series	O
has	O
a	O
telephoto	O
lens	O
,	O
while	O
the	O
lower	O
end	O
XR	B-Operating_System
has	O
only	O
one	O
lens	O
.	O
</s>
<s>
The	O
devices	O
film	O
with	O
stereo	O
audio	O
instead	O
of	O
mono	O
audio	O
for	O
the	O
first	O
time	O
on	O
iPhone	B-Operating_System
,	O
even	O
though	O
two	O
opposite-sided	O
microphones	O
had	O
been	O
built	O
in	O
since	O
iPhone	B-Operating_System
4	I-Operating_System
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
11	I-Operating_System
and	O
11	B-Operating_System
Pro	I-Operating_System
series	O
introduced	O
an	O
ultrawide	O
lens	O
;	O
the	O
latter	O
two	O
became	O
the	O
first	O
triple-camera	O
iPhones	B-Operating_System
.	O
</s>
<s>
The	O
11	O
has	O
a	O
dual-lens	O
setup	O
,	O
lacking	O
the	O
telephoto	O
lens	O
of	O
the	O
11	B-Operating_System
Pro	I-Operating_System
and	O
11	B-Operating_System
Pro	I-Operating_System
Max	O
.	O
</s>
<s>
The	O
front	O
camera	O
is	O
now	O
capable	O
of	O
recording	O
video	O
at	O
4K	B-Architecture
as	O
a	O
result	O
of	O
a	O
new	O
12	O
MP	O
sensor	O
,	O
and	O
can	O
also	O
capture	O
slow-motion	O
footage	O
.	O
</s>
<s>
The	O
second-generation	O
iPhone	B-Operating_System
SE	I-Operating_System
's	O
camera	O
hardware	B-Architecture
is	O
the	O
same	O
as	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
,	O
but	O
adds	O
Portrait	O
mode	O
,	O
Portrait	O
lighting	O
,	O
Smart	O
HDR	O
,	O
extended	O
dynamic	O
range	O
for	O
video	O
up	O
to	O
30	O
fps	O
,	O
stereo	O
recording	O
and	O
cinematic	O
video	O
stabilization	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
12	I-Operating_System
and	O
12	B-Operating_System
Pro	I-Operating_System
series	O
brought	O
Night	O
Mode	O
to	O
all	O
camera	O
lenses	O
,	O
including	O
the	O
TrueDepth	O
camera	O
.	O
</s>
<s>
Dolby	O
Vision	O
HDR	O
video	O
recording	O
up	O
to	O
30	O
FPS	O
is	O
available	O
for	O
the	O
iPhone	B-Operating_System
12	I-Operating_System
and	O
12	O
mini	O
,	O
and	O
up	O
to	O
60	O
FPS	O
for	O
the	O
12	B-Operating_System
Pro	I-Operating_System
and	O
12	B-Operating_System
Pro	I-Operating_System
Max	O
.	O
</s>
<s>
The	O
12	B-Operating_System
Pro	I-Operating_System
Max	O
also	O
has	O
a	O
47%	O
larger	O
sensor	O
and	O
sensor-shift	O
stabilization	O
for	O
better	O
low-light	O
photos	O
and	O
more	O
details	O
.	O
</s>
<s>
The	O
telephoto	O
camera	O
can	O
now	O
zoom	O
up	O
to	O
2.5x	O
on	O
the	O
Pro	O
Max	O
,	O
albeit	O
with	O
a	O
f/2.2	O
aperture	B-General_Concept
instead	O
of	O
the	O
12	B-Operating_System
Pro	I-Operating_System
's	O
f/2.0	O
aperture	B-General_Concept
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
14	I-Operating_System
and	O
14	B-Operating_System
Pro	I-Operating_System
series	O
introduced	O
Photonic	O
Engine	O
image	O
processing	O
technology	O
.	O
</s>
<s>
GSM	O
models	O
of	O
the	O
iPhone	B-Operating_System
use	O
a	O
SIM	O
card	O
to	O
identify	O
themselves	O
to	O
the	O
GSM	O
network	O
.	O
</s>
<s>
The	O
SIM	O
tray	O
can	O
be	O
ejected	O
with	O
a	O
paper	O
clip	O
or	O
the	O
"	O
SIM	O
ejector	O
tool	O
"	O
(	O
a	O
simple	O
piece	O
of	O
die-cut	O
sheet	O
metal	O
)	O
included	O
with	O
the	O
iPhone	B-Operating_System
3G	I-Operating_System
and	O
3GS	B-Operating_System
in	O
the	O
United	O
States	O
and	O
with	O
all	O
models	O
elsewhere	O
in	O
the	O
world	O
.	O
</s>
<s>
Some	O
iPhone	B-Operating_System
models	O
shipped	O
with	O
a	O
SIM	O
ejector	O
tool	O
which	O
was	O
fabricated	O
from	O
an	O
alloy	O
dubbed	O
"	O
Liquidmetal	O
"	O
.	O
</s>
<s>
In	O
most	O
countries	O
,	O
the	O
iPhone	B-Operating_System
is	O
usually	O
sold	O
with	O
a	O
SIM	O
lock	O
,	O
which	O
prevents	O
the	O
iPhone	B-Operating_System
from	O
being	O
used	O
on	O
a	O
different	O
mobile	O
network	O
.	O
</s>
<s>
The	O
GSM	O
iPhone	B-Operating_System
4	I-Operating_System
features	O
a	O
MicroSIM	O
card	O
that	O
is	O
located	O
in	O
a	O
slot	O
on	O
the	O
right	O
side	O
of	O
the	O
device	O
.	O
</s>
<s>
The	O
CDMA	B-Protocol
model	O
of	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
,	O
just	O
the	O
same	O
as	O
any	O
other	O
CDMA-only	O
cell	O
phone	O
,	O
does	O
not	O
use	O
a	O
SIM	O
card	O
or	O
have	O
a	O
SIM	O
card	O
slot	O
.	O
</s>
<s>
An	O
iPhone	B-Operating_System
4S	I-Operating_System
activated	O
on	O
a	O
CDMA	B-Protocol
carrier	O
,	O
however	O
,	O
does	O
have	O
a	O
SIM	O
card	O
slot	O
but	O
does	O
not	O
rely	O
on	O
a	O
SIM	O
card	O
for	O
activation	O
on	O
that	O
CDMA	B-Protocol
network	O
.	O
</s>
<s>
A	O
CDMA-activated	O
iPhone	B-Operating_System
4S	I-Operating_System
usually	O
has	O
a	O
carrier-approved	O
roaming	O
SIM	O
preloaded	O
in	O
its	O
SIM	O
slot	O
at	O
the	O
time	O
of	O
purchase	O
that	O
is	O
used	O
for	O
roaming	O
on	O
certain	O
carrier-approved	O
international	O
GSM	O
networks	O
only	O
.	O
</s>
<s>
The	O
SIM	O
slot	O
is	O
locked	O
to	O
only	O
use	O
the	O
roaming	O
SIM	O
card	O
provided	O
by	O
the	O
CDMA	B-Protocol
carrier	O
.	O
</s>
<s>
This	O
method	O
only	O
unlocks	O
the	O
iPhone	B-Operating_System
4S	I-Operating_System
for	O
use	O
on	O
international	O
carriers	O
.	O
</s>
<s>
An	O
iPhone	B-Operating_System
4S	I-Operating_System
that	O
has	O
been	O
unlocked	O
in	O
this	O
way	O
will	O
reject	O
any	O
non-international	O
SIM	O
cards	O
(	O
AT&T	O
Mobility	O
or	O
T-Mobile	O
USA	O
,	O
for	O
example	O
)	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
5	I-Operating_System
and	O
later	O
iPhones	B-Operating_System
use	O
nano-SIM	O
in	O
order	O
to	O
save	O
space	O
internally	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
XS	I-Operating_System
and	O
later	O
iPhones	B-Operating_System
added	O
eSIM	O
support	O
in	O
addition	O
to	O
nano-SIM	O
,	O
therefore	O
they	O
support	O
Dual	O
SIM	O
functionality	O
.	O
</s>
<s>
iPhone	B-Operating_System
14	I-Operating_System
and	O
14	B-Operating_System
Pro	I-Operating_System
models	O
sold	O
in	O
the	O
United	O
States	O
do	O
not	O
have	O
the	O
SIM	O
card	O
slot	O
,	O
and	O
instead	O
only	O
supports	O
eSIM	O
.	O
</s>
<s>
All	O
iPhones	B-Operating_System
(	O
as	O
well	O
as	O
many	O
other	O
devices	O
by	O
Apple	O
)	O
have	O
a	O
small	O
disc	O
at	O
the	O
bottom	O
of	O
the	O
headphone	B-Device
jack	I-Device
that	O
changes	O
from	O
white	O
to	O
red	O
on	O
contact	O
with	O
water	O
;	O
the	O
iPhone	B-Operating_System
3G	I-Operating_System
and	O
later	O
models	O
also	O
have	O
a	O
similar	O
indicator	O
at	O
the	O
bottom	O
of	O
the	O
dock	B-Operating_System
connector	I-Operating_System
.	O
</s>
<s>
However	O
,	O
with	O
the	O
adoption	O
of	O
water	O
resistance	O
as	O
a	O
feature	O
of	O
the	O
iPhone	B-Operating_System
,	O
this	O
practice	O
is	O
no	O
longer	O
in	O
use	O
by	O
Apple	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
's	O
indicators	O
are	O
more	O
exposed	O
than	O
those	O
in	O
some	O
mobile	O
phones	O
from	O
other	O
manufacturers	O
,	O
which	O
carry	O
them	O
in	O
a	O
more	O
protected	O
location	O
,	O
such	O
as	O
beneath	O
the	O
battery	O
behind	O
a	O
battery	O
cover	O
.	O
</s>
<s>
Criticism	O
led	O
Apple	O
to	O
change	O
its	O
water	O
damage	O
policy	B-Algorithm
for	O
iPhones	B-Operating_System
and	O
similar	O
products	O
,	O
allowing	O
customers	O
to	O
request	O
further	O
internal	O
inspection	O
of	O
the	O
phone	O
to	O
verify	O
if	O
internal	O
liquid	O
damage	O
sensors	O
were	O
triggered	O
.	O
</s>
<s>
All	O
iPhone	B-Operating_System
models	O
include	O
written	O
documentation	O
,	O
and	O
a	O
dock	B-Operating_System
connector	I-Operating_System
to	O
USB	B-Protocol
cable	O
.	O
</s>
<s>
The	O
first	O
generation	O
and	O
3G	B-Operating_System
iPhones	I-Operating_System
also	O
came	O
with	O
a	O
cleaning	O
cloth	O
.	O
</s>
<s>
The	O
first	O
generation	O
iPhone	B-Operating_System
includes	O
a	O
stereo	O
headset	B-Device
(	O
earbuds	B-Device
and	O
a	O
microphone	B-Algorithm
)	O
and	O
a	O
plastic	O
dock	O
to	O
hold	O
the	O
unit	O
upright	O
while	O
charging	O
and	O
syncing	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
3G	I-Operating_System
includes	O
a	O
similar	O
headset	B-Device
plus	O
a	O
SIM	O
eject	O
tool	O
(	O
the	O
first	O
generation	O
model	O
requires	O
a	O
paperclip	O
)	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
3GS	I-Operating_System
includes	O
the	O
SIM	O
eject	O
tool	O
and	O
a	O
revised	O
headset	B-Device
,	O
which	O
adds	O
volume	O
buttons	O
(	O
not	O
functional	O
with	O
previous	O
iPhone	B-Operating_System
versions	O
)	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
3G	I-Operating_System
and	O
3GS	B-Operating_System
are	O
compatible	O
with	O
the	O
same	O
dock	O
,	O
sold	O
separately	O
,	O
but	O
not	O
the	O
first	O
generation	O
model	O
's	O
dock	O
.	O
</s>
<s>
All	O
versions	O
include	O
a	O
USB	B-Protocol
power	O
adapter	O
,	O
or	O
"	O
wall	O
charger	O
"	O
,	O
which	O
allows	O
the	O
iPhone	B-Operating_System
to	O
charge	O
from	O
an	O
AC	O
outlet	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
3G	I-Operating_System
and	O
iPhone	B-Operating_System
3GS	I-Operating_System
sold	O
in	O
North	O
America	O
,	O
Japan	O
,	O
Colombia	O
,	O
Ecuador	O
,	O
and	O
Peru	O
include	O
an	O
ultracompact	O
USB	B-Protocol
power	O
adapter	O
.	O
</s>
<s>
In	O
October	O
2020	O
,	O
at	O
the	O
iPhone	B-Operating_System
12	I-Operating_System
virtual	O
event	O
,	O
Apple	O
announced	O
that	O
they	O
will	O
be	O
removing	O
the	O
power	O
adapter	O
and	O
EarPods	O
wired	O
headset	B-Device
from	O
all	O
iPhone	B-Operating_System
packaging	O
,	O
citing	O
environmental	O
reasons	O
.	O
</s>
<s>
In	O
September	O
2014	O
,	O
with	O
the	O
launch	O
of	O
the	O
iPhone	B-Operating_System
6	I-Operating_System
,	O
Apple	O
announced	O
Apple	B-Application
Pay	I-Application
,	O
a	O
mobile	O
payment	O
system	O
.	O
</s>
<s>
The	O
feature	O
,	O
aimed	O
to	O
"	O
revolutionize	O
"	O
the	O
way	O
users	O
pay	O
,	O
uses	O
an	O
NFC	O
chip	O
,	O
Touch	O
ID	O
fingerprint	B-Algorithm
scanner	O
(	O
Face	O
ID	O
on	O
iPhone	B-Operating_System
X	I-Operating_System
and	O
later	O
)	O
,	O
Apple	O
's	O
Wallet	B-Operating_System
app	O
,	O
and	O
a	O
dedicated	O
"	O
Secure	O
Element	O
"	O
chip	O
for	O
encrypted	O
payment	O
information	O
to	O
make	O
purchases	O
at	O
participating	O
stores	O
,	O
both	O
physical	O
and	O
online	O
.	O
</s>
<s>
All	O
iPhone	B-Operating_System
models	O
have	O
a	O
haptic	O
engine	O
to	O
vibrate	O
when	O
a	O
notification	O
or	O
alert	O
,	O
incoming	O
call	O
,	O
etc	O
.	O
</s>
<s>
iPhone	B-Operating_System
models	O
before	O
the	O
iPhone	B-Operating_System
4S	I-Operating_System
use	O
an	O
eccentric	O
rotating	O
mass	O
motor	O
,	O
with	O
the	O
exception	O
of	O
the	O
CDMA	B-Protocol
model	O
of	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
4S	I-Operating_System
and	O
CDMA	B-Protocol
iPhone	B-Operating_System
4	I-Operating_System
use	O
a	O
linear	O
resonant	O
actuator	O
vibrator	O
,	O
which	O
usually	O
uses	O
less	O
power	O
and	O
creates	O
a	O
quieter	O
vibration	O
.	O
</s>
<s>
However	O
,	O
the	O
iPhone	B-Operating_System
5	I-Operating_System
,	O
5C	O
,	O
and	O
5S	B-Operating_System
use	O
an	O
eccentric	O
rotating	O
mass	O
motor	O
.	O
</s>
<s>
It	O
is	O
unknown	O
why	O
Apple	O
switched	O
back	O
to	O
the	O
previous	O
type	O
of	O
vibrator	O
,	O
however	O
the	O
iPhone	B-Operating_System
6	I-Operating_System
and	I-Operating_System
6	I-Operating_System
Plus	I-Operating_System
resumed	O
the	O
ongoing	O
use	O
of	O
linear	O
resonant	O
actuator	O
vibrators	O
.	O
</s>
<s>
iPhone	B-Operating_System
6S	I-Operating_System
and	O
later	O
use	O
the	O
Taptic	O
Engine	O
for	O
vibration	O
and	O
haptic	O
feedback	O
,	O
which	O
works	O
in	O
a	O
similar	O
mechanical	O
fashion	O
to	O
the	O
linear	O
resonant	O
actuator	O
vibrator	O
in	O
the	O
iPhone	B-Operating_System
6	I-Operating_System
and	O
iPhone	B-Operating_System
6	I-Operating_System
Plus	I-Operating_System
,	O
but	O
is	O
far	O
more	O
precise	O
.	O
</s>
