<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
iPhone	B-Operating_System
8	I-Operating_System
Plus	I-Operating_System
are	O
smartphones	B-Application
designed	O
,	O
developed	O
,	O
and	O
marketed	O
by	O
Apple	O
Inc	O
.	O
</s>
<s>
They	O
are	O
the	O
eleventh	O
generation	B-Application
of	O
the	O
iPhone	B-Device
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
was	O
released	O
on	O
September	O
22	O
,	O
2017	O
,	O
succeeding	O
the	O
iPhone	B-Application
7	I-Application
and	O
iPhone	B-Application
7	I-Application
Plus	I-Application
respectively	O
and	O
preceding	O
the	O
iPhone	B-Operating_System
XR	I-Operating_System
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
iPhone	B-Operating_System
8	I-Operating_System
Plus	I-Operating_System
were	O
discontinued	O
by	O
Apple	O
on	O
April	O
15	O
,	O
2020	O
with	O
the	O
release	O
of	O
the	O
second-generation	B-Operating_System
iPhone	I-Operating_System
SE	I-Operating_System
.	O
</s>
<s>
Except	O
for	O
the	O
addition	O
of	O
a	O
glass	O
back	O
,	O
the	O
designs	O
of	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
are	O
largely	O
similar	O
to	O
that	O
of	O
their	O
predecessors	O
.	O
</s>
<s>
Notable	O
changes	O
include	O
the	O
removal	O
of	O
the	O
rose	O
gold	O
and	O
jet	O
black	O
color	O
variants	O
,	O
addition	O
of	O
inductive	B-Application
charging	I-Application
,	O
a	O
faster	B-Device
processor	I-Device
,	O
and	O
improved	O
cameras	O
and	O
displays	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
share	O
most	O
of	O
their	O
internal	O
hardware	O
with	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
were	O
discontinued	O
as	O
of	O
February	O
2020	O
,	O
having	O
sold	O
86.3	O
million	O
units	O
worldwide	O
,	O
making	O
them	O
one	O
of	O
the	O
best-selling	O
smartphones	B-Application
of	O
all	O
time	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
were	O
the	O
final	O
models	O
of	O
the	O
flagship	O
iPhone	B-Device
model	O
to	O
feature	O
the	O
Home	O
Button	O
and	O
Touch	O
ID	O
.	O
</s>
<s>
The	O
entry-level	O
iPhone	B-Operating_System
SE	I-Operating_System
second	B-Operating_System
and	O
third	B-Operating_System
generations	I-Operating_System
share	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
's	O
exterior	O
dimensions	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
iPhone	B-Operating_System
8	I-Operating_System
Plus	I-Operating_System
were	O
announced	O
at	O
that	O
event	O
,	O
and	O
released	O
on	O
September	O
22	O
,	O
2017	O
.	O
</s>
<s>
On	O
April	O
9	O
,	O
2018	O
,	O
Apple	O
introduced	O
an	O
iPhone	B-Operating_System
8	I-Operating_System
with	O
a	O
red	O
color	O
finish	O
and	O
a	O
black	O
front	O
,	O
in	O
support	O
of	O
their	O
partnership	O
with	O
Product	O
Red	O
and	O
their	O
AIDS	B-Device
fundraising	O
campaign	O
.	O
</s>
<s>
In	O
March	O
2020	O
,	O
Apple	O
started	O
selling	O
refurbished	O
iPhone	B-Operating_System
8	I-Operating_System
Plus	I-Operating_System
models	O
starting	O
at	O
$469	O
.	O
</s>
<s>
The	O
price	O
was	O
subsequently	O
lowered	O
to	O
US$359	O
In	O
May	O
2020	O
,	O
Apple	O
started	O
selling	O
iPhone	B-Operating_System
8	I-Operating_System
models	O
starting	O
at	O
$339	O
.	O
</s>
<s>
On	O
April	O
15	O
,	O
2020	O
,	O
Apple	O
announced	O
the	O
second-generation	B-Operating_System
iPhone	I-Operating_System
SE	I-Operating_System
and	O
discontinued	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
,	O
which	O
share	O
the	O
external	O
form	O
factor	O
but	O
has	O
upgraded	O
internals	O
including	O
an	O
A13	B-Device
Bionic	I-Device
processor	O
.	O
</s>
<s>
On	O
March	O
8	O
,	O
2022	O
,	O
Apple	O
announced	O
the	O
third-generation	B-Operating_System
iPhone	I-Operating_System
SE	I-Operating_System
with	O
the	O
same	O
exterior	O
dimensions	O
,	O
but	O
with	O
an	O
upgraded	O
camera	O
and	O
Apple	B-Device
's	I-Device
A15	I-Device
processor	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
retain	O
the	O
Retina	B-Operating_System
HD	I-Operating_System
Display	I-Operating_System
found	O
in	O
the	O
iPhone	B-Application
7	I-Application
,	O
but	O
they	O
now	O
feature	O
True	O
Tone	O
technology	O
,	O
allowing	O
for	O
automatic	O
screen	O
adjustments	O
based	O
on	O
surrounding	O
ambient	O
lighting	O
.	O
</s>
<s>
They	O
can	O
play	O
HDR10	B-Device
and	O
Dolby	B-Device
Vision	I-Device
content	O
despite	O
not	O
having	O
an	O
HDR-ready	O
display	O
,	O
done	O
by	O
down-converting	O
the	O
HDR	O
content	O
to	O
fit	O
the	O
display	O
while	O
still	O
having	O
some	O
enhancements	O
to	O
dynamic	O
range	O
,	O
contrast	O
,	O
and	O
wide	O
color	O
gamut	O
compared	O
to	O
standard	B-Device
content	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
features	O
a	O
12	O
MP	O
camera	O
with	O
autofocus	O
,	O
f/1.8	O
aperture	O
and	O
optical	O
image	O
stabilization	O
capable	O
of	O
capturing	O
4K	B-Architecture
video	I-Architecture
at	O
24	O
,	O
30	O
,	O
or	O
60	O
frames	O
per	O
second	B-Operating_System
,	O
or	O
1080p	O
video	O
at	O
30	O
,	O
60	O
,	O
120	O
or	O
240	O
frames	O
per	O
second	B-Operating_System
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
Plus	I-Operating_System
upgrades	O
the	O
main	O
camera	O
for	O
a	O
wide-angle	O
lens	O
with	O
up	O
to	O
10×	O
digital	B-Algorithm
zoom	I-Algorithm
or	O
2×	O
optical	O
zoom	O
,	O
and	O
retains	O
a	O
second	B-Operating_System
,	O
telephoto	O
lens	O
similar	O
to	O
the	O
one	O
found	O
on	O
the	O
iPhone	B-Application
7	I-Application
Plus	I-Application
,	O
but	O
with	O
improved	O
depth-of-field	O
and	O
lighting	O
effects	O
in	O
Portrait	O
mode	O
.	O
</s>
<s>
Both	O
models	O
have	O
a	O
7	O
MP	O
front	O
camera	O
with	O
an	O
f/2.2	O
aperture	O
capable	O
of	O
capturing	O
1080p	O
video	O
at	O
30	O
frames	O
per	O
second	B-Operating_System
and	O
720p	O
video	O
at	O
24	O
frames	O
per	O
second	B-Operating_System
,	O
along	O
with	O
face	B-General_Concept
detection	I-General_Concept
and	O
high-dynamic	O
range	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
record	O
videos	O
with	O
single	O
channel	O
audio	O
(	O
mono	O
)	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
contain	O
the	O
Apple	B-Device
A11	I-Device
Bionic	I-Device
system-on-chip	B-Architecture
,	O
a	O
hexa-core	B-Architecture
processor	O
that	O
the	O
company	O
says	O
features	O
two	O
performance	O
cores	O
that	O
are	O
25%	O
faster	O
than	O
those	O
found	O
in	O
the	O
iPhone	B-Application
7	I-Application
's	O
A10	O
processor	O
and	O
four	O
efficiency	O
cores	O
that	O
are	O
70%	O
faster	O
than	O
those	O
in	O
the	O
prior	O
model	O
.	O
</s>
<s>
The	O
phones	O
also	O
feature	O
an	O
Apple-designed	O
graphics	B-Architecture
processing	I-Architecture
unit	I-Architecture
30%	O
faster	O
than	O
prior	O
units	O
,	O
with	O
the	O
same	O
level	O
of	O
performance	O
as	O
the	O
A10	O
at	O
half	O
the	O
power	O
.	O
</s>
<s>
The	O
phones	O
have	O
glass	O
backs	O
instead	O
of	O
the	O
complete	O
aluminum	O
housing	O
found	O
on	O
prior	O
models	O
,	O
enabling	O
the	O
use	O
of	O
Qi	O
inductive	B-Application
charging	I-Application
.	O
</s>
<s>
The	O
iPhone	B-Application
7	I-Application
and	O
7	O
Plus	O
special	O
editions	O
had	O
a	O
white	O
front	O
,	O
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
was	O
the	O
last	O
iPhone	B-Device
with	O
white	O
front	O
in	O
Silver	O
and	O
White	O
Color	O
.	O
</s>
<s>
In	O
addition	O
to	O
Qi	O
wireless	B-Application
charging	I-Application
,	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
also	O
supports	O
wired	O
charging	O
using	O
Apple	O
's	O
proprietary	O
Lightning	B-Architecture
connector	I-Architecture
.	O
</s>
<s>
It	O
can	O
fast-charge	O
from	O
a	O
charger	O
providing	O
USB	O
Power	O
Delivery	O
combined	O
with	O
a	O
special	O
USB-C	O
to	O
Lightning	B-Architecture
adapter	O
cable	O
supporting	O
fast	O
charging	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
has	O
a	O
6	O
out	O
of	O
10	O
reparability	O
score	O
from	O
iFixit	O
,	O
mainly	O
due	O
to	O
the	O
use	O
of	O
excessive	O
glue	O
for	O
the	O
back	O
glass	O
.	O
</s>
<s>
Both	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
were	O
supplied	O
with	O
iOS	B-Operating_System
11	I-Operating_System
on	O
launch	O
,	O
and	O
support	O
iOS	B-Operating_System
12	I-Operating_System
,	O
iOS	B-Operating_System
13	I-Operating_System
,	O
iOS	B-Operating_System
14	I-Operating_System
,	O
iOS	B-Operating_System
15	I-Operating_System
and	O
iOS	B-Operating_System
16	I-Operating_System
.	O
</s>
<s>
Reception	O
of	O
the	O
phones	O
was	O
generally	O
positive	O
,	O
with	O
reviewers	O
praising	O
the	O
addition	O
of	O
inductive	B-Application
charging	I-Application
,	O
fast	O
charge	O
capability	O
,	O
and	O
the	O
new	O
Apple	B-Device
A11	I-Device
processor	O
,	O
while	O
criticizing	O
the	O
aging	O
design	O
that	O
was	O
introduced	O
with	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
in	O
2014	O
.	O
</s>
<s>
Axon	O
also	O
praised	O
the	O
cameras	O
,	O
writing	O
that	O
"	O
The	O
colors	O
are	O
great	O
,	O
and	O
low	O
light	O
performance	O
is	O
very	O
good	O
for	O
a	O
smartphone	B-Application
"	O
.	O
</s>
<s>
Chris	O
Velazco	O
of	O
Engadget	B-Application
praised	O
the	O
speed	O
of	O
the	O
A11	O
processor	O
,	O
the	O
build	O
quality	O
and	O
the	O
"	O
excellent	O
"	O
camera	O
,	O
while	O
criticizing	O
design	O
familiarities	O
with	O
previous	O
iPhone	B-Device
generations	O
and	O
limited	O
water-protection	O
levels	O
compared	O
to	O
competitors	O
.	O
</s>
<s>
McCann	O
also	O
praised	O
the	O
camera	O
and	O
called	O
inductive	B-Application
charging	I-Application
a	O
"	O
useful	O
"	O
addition	O
to	O
the	O
iPhone	B-Device
lineup	O
.	O
</s>
<s>
David	O
Pierce	O
of	O
Wired	O
similarly	O
stated	O
that	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
models	O
were	O
overshadowed	O
by	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
,	O
despite	O
calling	O
them	O
"	O
virtually	O
perfect	O
phones	O
"	O
.	O
</s>
<s>
Nilay	O
Patel	O
of	O
The	O
Verge	O
called	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
the	O
"	O
default	O
option	O
"	O
,	O
noting	O
that	O
the	O
8	O
models	O
stand	O
as	O
almost	O
universally	O
overlooked	O
by	O
Apple	O
's	O
other	O
new	O
iPhone	B-Device
launched	O
,	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
.	O
</s>
<s>
He	O
nevertheless	O
praised	O
the	O
device	O
's	O
form	O
factor	O
for	O
being	O
easy	O
and	O
non-slippery	O
to	O
hold	O
and	O
the	O
display	O
's	O
addition	O
of	O
True	O
Tone	O
technology	O
and	O
upgraded	O
speakers	O
,	O
though	O
he	O
cited	O
issues	O
with	O
inductive	B-Application
charging	I-Application
speed	O
through	O
wireless	O
pads	O
as	O
well	O
as	O
the	O
price	O
of	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
Plus	I-Operating_System
256GB	O
,	O
which	O
was	O
close	O
to	O
that	O
of	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
.	O
Patel	O
also	O
criticized	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
's	O
aging	O
design	O
,	O
dating	O
back	O
to	O
the	O
iPhone	B-Operating_System
6	I-Operating_System
released	O
in	O
2014	O
;	O
the	O
most	O
notable	O
critique	O
was	O
of	O
the	O
thick	O
bezels	O
when	O
compared	O
to	O
other	O
2017	O
smartphones	B-Application
,	O
designed	O
with	O
nearly	O
bezel-less	O
faces	O
to	O
incorporate	O
larger	O
screens	O
in	O
a	O
similar	O
form	O
factor	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
were	O
also	O
criticized	O
for	O
their	O
durability	O
,	O
as	O
drop	O
tests	O
performed	O
showed	O
that	O
the	O
rear	O
glass	O
is	O
not	O
"	O
the	O
most	O
durable	O
glass	O
ever	O
in	O
a	O
smartphone	B-Application
"	O
,	O
as	O
claimed	O
by	O
Apple	O
.	O
</s>
<s>
Camera	O
testing	O
company	O
DxOMark	B-Algorithm
gave	O
the	O
camera	O
on	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
a	O
rating	O
of	O
92	O
and	O
8	O
Plus	O
a	O
rating	O
of	O
94	O
,	O
giving	O
them	O
the	O
title	O
of	O
best	O
smartphone	B-Application
cameras	O
tested	O
by	O
the	O
company	O
.	O
</s>
<s>
The	O
Samsung	B-Application
Galaxy	I-Application
Note	I-Application
8	I-Application
later	O
matched	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
Plus	I-Operating_System
with	O
an	O
identical	O
overall	O
score	O
of	O
94	O
.	O
</s>
<s>
They	O
were	O
later	O
overtaken	O
by	O
the	O
Google	B-Device
Pixel	I-Device
2	I-Device
,	O
which	O
scored	O
a	O
98	O
rating	O
.	O
</s>
<s>
Although	O
being	O
the	O
first	O
mobile	O
phone	O
to	O
record	O
2160p	O
at	O
60	O
frames	O
per	O
second	B-Operating_System
,	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
,	O
8	O
Plus	O
and	O
X	O
have	O
been	O
criticized	O
in	O
a	O
review	O
by	O
GSMArena	O
for	O
its	O
mono	O
(	O
single-channel	O
)	O
audio	O
recording	O
for	O
videos	O
,	O
while	O
stereo	O
audio	O
recording	O
for	O
videos	O
has	O
been	O
available	O
on	O
competing	O
mobile	O
phone	O
models	O
for	O
several	O
years	O
,	O
such	O
as	O
the	O
Samsung	B-Application
Galaxy	I-Application
S3	I-Application
and	O
Sony	B-Application
Xperia	I-Application
S	I-Application
from	O
2012	O
.	O
</s>
<s>
On	O
August	O
31	O
,	O
2018	O
,	O
Apple	O
announced	O
that	O
a	O
"	O
very	O
small	O
percentage	O
"	O
of	O
iPhone	B-Operating_System
8	I-Operating_System
devices	O
released	O
between	O
September	O
2017	O
and	O
March	O
2018	O
contained	O
a	O
manufacturing	O
defect	O
in	O
the	O
logic	O
board	O
.	O
</s>
<s>
This	O
fault	O
affected	O
iPhone	B-Operating_System
8	I-Operating_System
models	O
sold	O
in	O
Australia	O
,	O
China	O
,	O
Hong	O
Kong	O
,	O
India	O
,	O
Japan	O
,	O
Macau	O
,	O
New	O
Zealand	O
,	O
and	O
the	O
United	O
States	O
.	O
</s>
<s>
This	O
issue	O
does	O
not	O
affect	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
Plus	I-Operating_System
.	O
</s>
