<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
(	O
Roman	O
numeral	O
"	O
X	O
"	O
pronounced	O
"	O
ten	O
"	O
,	O
also	O
known	O
as	O
iPhone	B-Operating_System
10	I-Operating_System
)	O
is	O
a	O
smartphone	B-Application
designed	O
,	O
developed	O
and	O
marketed	O
by	O
Apple	O
Inc	O
.	O
</s>
<s>
It	O
is	O
part	O
of	O
the	O
eleventh	O
generation	B-Application
of	O
the	O
iPhone	B-Device
.	O
</s>
<s>
The	O
naming	B-Operating_System
of	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
(	O
skipping	O
the	O
iPhone	B-Device
9	O
)	O
is	O
to	O
mark	O
the	O
10th	O
anniversary	O
of	O
the	O
iPhone	B-Device
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
used	O
a	O
glass	O
and	O
stainless-steel	O
form	O
factor	O
and	O
"	O
bezel-less	O
"	O
design	O
,	O
shrinking	O
the	O
bezels	O
while	O
not	O
having	O
a	O
"	O
chin	O
"	O
,	O
unlike	O
many	O
Android	B-Application
phones	I-Application
.	O
</s>
<s>
It	O
was	O
the	O
first	O
iPhone	B-Device
to	O
use	O
an	O
OLED	B-Device
screen	I-Device
.	O
</s>
<s>
The	O
screen	O
is	O
a	O
Super	B-Operating_System
Retina	I-Operating_System
XDR	I-Operating_System
display	I-Operating_System
.	O
</s>
<s>
With	O
a	O
bezel-less	O
design	O
,	O
iPhone	B-Device
user	O
interaction	O
changed	O
significantly	O
,	O
using	O
gestures	O
to	O
navigate	O
the	O
operating	O
system	O
rather	O
than	O
the	O
home	O
button	O
used	O
in	O
all	O
previous	O
iPhones	B-Device
.	O
</s>
<s>
At	O
the	O
time	O
of	O
its	O
November	O
2017	O
launch	O
,	O
its	O
price	O
tag	O
of	O
US$999	O
also	O
made	O
it	O
the	O
most	O
expensive	O
iPhone	B-Device
ever	O
,	O
with	O
even	O
higher	O
prices	O
internationally	O
due	O
to	O
additional	O
local	O
sales	O
and	O
import	O
taxes	O
.	O
</s>
<s>
Along	O
with	O
the	O
iPhone	B-Operating_System
6S	I-Operating_System
,	O
its	O
Plus	O
variant	O
,	O
and	O
the	O
first-generation	B-Operating_System
iPhone	I-Operating_System
SE	I-Operating_System
,	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
was	O
discontinued	O
on	O
September	O
12	O
,	O
2018	O
,	O
following	O
the	O
announcement	O
of	O
the	O
iPhone	B-Operating_System
XS	I-Operating_System
,	O
iPhone	B-Operating_System
XS	I-Operating_System
Max	I-Operating_System
and	O
iPhone	B-Operating_System
XR	I-Operating_System
devices	O
.	O
</s>
<s>
On	O
November	O
22	O
,	O
2018	O
,	O
Apple	O
reportedly	O
resumed	O
production	O
of	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
due	O
to	O
weak	O
sales	O
of	O
its	O
successors	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
remains	O
discontinued	O
.	O
</s>
<s>
The	O
technology	O
behind	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
was	O
in	O
development	O
for	O
five	O
years	O
,	O
starting	O
as	O
far	O
back	O
as	O
2012	O
.	O
</s>
<s>
Rumors	O
of	O
a	O
drastic	O
iPhone	B-Device
redesign	O
began	O
circulating	O
around	O
the	O
time	O
of	O
iPhone	B-Application
7	I-Application
announcement	O
in	O
the	O
third	O
quarter	O
of	O
2016	O
,	O
and	O
intensified	O
when	O
a	O
HomePod	B-Device
firmware	O
leak	O
in	O
July	O
2017	O
suggested	O
that	O
Apple	O
would	O
shortly	O
release	O
a	O
phone	O
with	O
a	O
nearly	O
bezel-less	O
design	O
,	O
lack	O
of	O
a	O
physical	O
home	O
button	O
,	O
facial	O
recognition	O
,	O
and	O
other	O
new	O
features	O
.	O
</s>
<s>
A	O
near-final	O
development	O
version	O
of	O
the	O
iOS	B-Operating_System
11	I-Operating_System
operating	O
system	O
was	O
also	O
leaked	O
in	O
September	O
2017	O
,	O
confirming	O
the	O
new	O
design	O
and	O
features	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
was	O
unveiled	O
during	O
that	O
keynote	O
.	O
</s>
<s>
Its	O
US$999	O
starting	O
price	O
was	O
the	O
most	O
expensive	O
iPhone	B-Device
launch	O
price	O
ever	O
at	O
the	O
time	O
.	O
</s>
<s>
In	O
April	O
2018	O
,	O
the	O
Federal	O
Communications	O
Commission	O
divulged	O
images	O
of	O
an	O
unreleased	O
gold-colored	O
iPhone	B-Operating_System
X	I-Operating_System
model	O
.	O
</s>
<s>
As	O
opposed	O
to	O
the	O
space	O
gray	O
and	O
silver	O
color	O
options	O
that	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
ships	O
with	O
,	O
it	O
was	O
divulged	O
that	O
there	O
were	O
initial	O
plans	O
to	O
release	O
a	O
gold	O
option	O
for	O
the	O
device	O
.	O
</s>
<s>
Apple	O
released	O
a	O
revised	O
B	O
model	O
for	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
that	O
fixed	O
NFC	O
issues	O
for	O
users	O
in	O
Japan	O
,	O
China	O
,	O
and	O
the	O
United	O
States	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
has	O
a	O
5.85	O
inch	O
(	O
marketed	O
as	O
5.8	O
inch	O
)	O
OLED	B-Device
color-accurate	O
screen	O
that	O
supports	O
DCI-P3	O
wide	O
color	O
gamut	O
,	O
sRGB	O
,	O
and	O
high	B-General_Concept
dynamic	I-General_Concept
range	I-General_Concept
,	O
and	O
has	O
a	O
contrast	O
ratio	O
of	O
1,000,000	O
:1	O
.	O
</s>
<s>
The	O
Super	B-Operating_System
Retina	I-Operating_System
display	O
has	O
the	O
True	O
Tone	O
technology	O
found	O
on	O
the	O
iPad	B-Device
Pro	I-Device
,	O
which	O
uses	O
ambient	O
light	O
sensors	O
to	O
adapt	O
the	O
display	O
's	O
white	O
balance	O
to	O
the	O
surrounding	O
ambient	O
light	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
does	O
not	O
feature	O
the	O
variable	O
10-120	O
Hz	O
"	O
ProMotion	O
"	O
technology	O
used	O
in	O
the	O
displays	O
of	O
the	O
second-generation	O
iPad	B-Device
Pro	I-Device
until	O
the	O
launch	O
of	O
the	O
iPhone	B-Operating_System
13	I-Operating_System
Pro	I-Operating_System
in	O
2021	O
.	O
</s>
<s>
OLED	B-Device
screen	I-Device
technology	O
has	O
a	O
known	O
negative	O
trend	O
of	O
"	O
burn-in	O
"	O
effects	O
,	O
in	O
which	O
particular	O
elements	O
consistently	O
on	O
the	O
screen	O
for	O
long	O
periods	O
of	O
time	O
leave	O
a	O
faint	O
trace	O
even	O
after	O
new	O
images	O
appear	O
.	O
</s>
<s>
Apple	O
acknowledged	O
that	O
its	O
OLED	B-Device
screens	I-Device
were	O
not	O
excluded	O
from	O
this	O
issue	O
,	O
writing	O
in	O
a	O
support	O
document	O
that	O
"	O
This	O
is	O
also	O
expected	O
behavior	O
"	O
.	O
</s>
<s>
Greg	O
Joswiak	O
,	O
Apple	O
's	O
vice	O
president	O
of	O
product	O
marketing	O
,	O
told	O
Tom	O
's	O
Guide	O
that	O
the	O
OLED	B-Device
panels	O
Apple	O
used	O
in	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
had	O
been	O
engineered	O
to	O
avoid	O
the	O
over-saturation	O
of	O
colors	O
that	O
using	O
OLED	B-Device
panels	O
typically	O
results	O
in	O
,	O
having	O
made	O
color	O
adjustments	O
and	O
subpixel-level	O
refinements	O
for	O
crisp	O
lines	O
and	O
round	O
corners	O
.	O
</s>
<s>
For	O
out-of-warranty	O
servicing	O
for	O
damages	O
not	O
relating	O
to	O
manufacturing	O
defects	O
,	O
screen	O
repairs	O
of	O
iPhone	B-Operating_System
X	I-Operating_System
cost	O
US$279	O
,	O
while	O
other	O
damage	O
repairs	O
cost	O
US$549	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
has	O
two	O
color	O
options	O
;	O
silver	O
and	O
space	O
gray	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
contains	O
Apple	O
's	O
A11	B-Device
Bionic	I-Device
system-on-chip	B-Architecture
,	O
also	O
used	O
in	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
8	O
Plus	O
,	O
which	O
is	O
a	O
six-core	O
processor	O
with	O
two	O
cores	O
optimized	O
for	O
performance	O
(	O
25%	O
faster	O
than	O
the	O
A10	O
Fusion	O
processor	O
)	O
,	O
along	O
with	O
four	O
cores	O
optimized	O
for	O
efficiency	O
(	O
70%	O
faster	O
than	O
the	O
previous	O
generation	B-Application
)	O
.	O
</s>
<s>
It	O
also	O
features	O
the	O
first	O
Apple-designed	O
graphics	B-Architecture
processing	I-Architecture
unit	I-Architecture
and	O
a	O
Neural	O
Engine	O
,	O
which	O
powers	O
an	O
artificial	B-Application
intelligence	I-Application
accelerator	O
.	O
</s>
<s>
The	O
pattern	O
is	O
sent	O
to	O
the	O
Secure	O
Enclave	O
in	O
the	O
A11	B-Device
Bionic	I-Device
chip	O
to	O
confirm	O
a	O
match	O
with	O
the	O
phone	O
owner	O
's	O
face	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
has	O
two	O
cameras	O
on	O
the	O
rear	O
.	O
</s>
<s>
One	O
is	O
a	O
12-megapixel	O
wide-angle	O
camera	O
with	O
f/1.8	O
aperture	O
,	O
with	O
support	O
for	O
face	B-General_Concept
detection	I-General_Concept
,	O
high	B-General_Concept
dynamic	I-General_Concept
range	I-General_Concept
and	O
optical	O
image	O
stabilization	O
.	O
</s>
<s>
It	O
is	O
capable	O
of	O
capturing	O
4K	B-Architecture
video	I-Architecture
at	O
24	O
,	O
30	O
or	O
60	O
frames	O
per	O
second	O
,	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	O
.	O
</s>
<s>
iOS	O
12/13	O
for	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
did	O
not	O
include	O
Smart	O
HDR	O
or	O
Night	O
Mode	O
,	O
which	O
were	O
kept	O
exclusive	O
to	O
the	O
new	O
iPhone	B-Device
XS/iPhone	O
11	O
.	O
</s>
<s>
On	O
the	O
front	O
of	O
the	O
phone	O
,	O
a	O
7-megapixel	O
True	O
Depth	O
camera	O
has	O
an	O
f/2.2	O
aperture	O
,	O
and	O
features	O
face	B-General_Concept
detection	I-General_Concept
and	O
HDR	O
.	O
</s>
<s>
Criticism	O
has	O
been	O
aimed	O
at	O
video	O
footage	O
being	O
recorded	O
with	O
mono	O
audio	O
(	O
only	O
one	O
audio	O
channel	O
)	O
,	O
and	O
at	O
a	O
low	O
bit	O
rate	O
of	O
96	O
kbit/s	O
,	O
while	O
earlier	O
mobile	O
phones	O
by	O
competing	O
vendors	O
have	O
been	O
recording	O
with	O
stereo	O
audio	O
(	O
two	O
audio	O
channels	O
for	O
spatiality	O
)	O
and	O
higher	O
bit	O
rates	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
,	O
both	O
unveiled	O
in	O
2012	O
.	O
</s>
<s>
iPhone	B-Operating_System
X	I-Operating_System
also	O
supports	O
Qi-standard	O
wireless	B-Application
charging	I-Application
.	O
</s>
<s>
In	O
tests	O
conducted	O
by	O
MacRumors	O
,	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
's	O
charging	O
speeds	O
varies	O
significantly	O
depending	O
on	O
what	O
types	O
of	O
cables	O
,	O
powerbanks	O
,	O
adapters	O
,	O
or	O
wireless	O
chargers	O
are	O
used	O
.	O
</s>
<s>
Additionally	O
,	O
text	O
within	O
the	O
app	O
needs	O
to	O
be	O
configured	O
to	O
properly	O
reference	O
Face	O
ID	O
rather	O
than	O
Touch	O
ID	O
where	O
the	O
authentication	O
technology	O
is	O
used	O
on	O
iPhone	B-Operating_System
X	I-Operating_System
.	O
</s>
<s>
In	O
anticipation	O
of	O
the	O
release	O
of	O
the	O
phone	O
,	O
most	O
major	O
apps	O
were	O
quickly	O
updated	O
to	O
support	O
the	O
new	O
changes	O
brought	O
by	O
iPhone	B-Operating_System
X	I-Operating_System
,	O
though	O
the	O
required	O
changes	O
did	O
cause	O
delayed	O
app	O
updates	O
for	O
some	O
major	O
apps	O
.	O
</s>
<s>
The	O
traditional	O
home	O
button	O
,	O
found	O
on	O
all	O
previous	O
devices	O
in	O
the	O
iPhone	B-Device
lineup	O
,	O
has	O
been	O
removed	O
entirely	O
,	O
replaced	O
by	O
touch-based	O
gestures	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
originally	O
shipped	O
with	O
iOS	B-Operating_System
11	I-Operating_System
preinstalled	O
at	O
launch	O
.	O
</s>
<s>
It	O
received	O
iOS	B-Operating_System
12	I-Operating_System
on	O
September	O
17	O
,	O
2018	O
,	O
and	O
is	O
compatible	O
with	O
iOS	B-Operating_System
13	I-Operating_System
,	O
which	O
was	O
released	O
on	O
September	O
19	O
,	O
2019	O
.	O
</s>
<s>
It	O
received	O
iOS	B-Operating_System
14	I-Operating_System
on	O
September	O
16	O
,	O
2020	O
,	O
and	O
iOS	B-Operating_System
15	I-Operating_System
on	O
September	O
20	O
,	O
2021	O
.	O
</s>
<s>
On	O
September	O
12	O
,	O
2022	O
,	O
it	O
became	O
compatible	O
with	O
iOS	B-Operating_System
16	I-Operating_System
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
X	I-Operating_System
received	O
positive	O
reviews	O
.	O
</s>
<s>
Face	O
ID	O
facial	O
recognition	O
was	O
praised	O
for	O
its	O
simple	O
setup	O
,	O
but	O
criticized	O
for	O
requiring	O
direct	O
eyes	O
on	O
the	O
screen	O
,	O
though	O
that	O
option	O
can	O
be	O
disabled	O
within	O
the	O
system	B-Operating_System
preferences	I-Operating_System
.	O
</s>
<s>
iPhone	B-Operating_System
X	I-Operating_System
's	O
rear	O
camera	O
received	O
an	O
overall	O
rating	O
of	O
97	O
from	O
DxOMark	O
,	O
a	O
camera	O
testing	O
company	O
,	O
short	O
of	O
the	O
highest	O
score	O
of	O
99	O
,	O
awarded	O
to	O
Samsung	B-Application
's	O
Galaxy	B-Application
S9+	I-Application
smartphone	B-Application
.	O
</s>
<s>
Google	O
's	O
Pixel	B-Device
2	I-Device
received	O
a	O
rating	O
of	O
98	O
.	O
</s>
<s>
Consumer	O
Reports	O
,	O
a	O
non-profit	O
,	O
independent	O
organization	O
aiming	O
to	O
write	O
impartial	O
reviews	O
of	O
consumer	O
products	O
,	O
ranked	O
iPhone	B-Operating_System
X	I-Operating_System
below	O
iPhone	B-Operating_System
8	I-Operating_System
and	O
iPhone	B-Operating_System
8	I-Operating_System
Plus	I-Operating_System
,	O
as	O
well	O
as	O
below	O
Samsung	B-Application
's	O
Galaxy	B-Application
S8	I-Application
,	O
S8+	O
and	O
Note	B-Application
8	I-Application
,	O
due	O
to	O
less	O
durability	O
and	O
shorter	O
battery	O
life	O
,	O
although	O
it	O
praised	O
the	O
X	O
's	O
camera	O
as	O
"	O
the	O
highest-rated	O
smartphone	B-Application
camera	O
"	O
it	O
had	O
ever	O
tested	O
.	O
</s>
<s>
Chris	O
Velazco	O
of	O
Engadget	B-Application
praised	O
the	O
display	O
,	O
writing	O
that	O
,	O
in	O
his	O
experience	O
,	O
the	O
sensor	O
"	O
notch	O
"	O
goes	O
from	O
being	O
"	O
weird	O
at	O
first	O
"	O
to	O
not	O
being	O
noticeable	O
due	O
to	O
action	O
in	O
videos	O
usually	O
happening	O
in	O
the	O
center	O
.	O
</s>
<s>
Patel	O
highlighted	O
the	O
fact	O
that	O
apps	O
required	O
updates	O
to	O
fit	O
the	O
new	O
screen	O
,	O
writing	O
that	O
not	O
all	O
popular	O
apps	O
had	O
received	O
updates	O
by	O
the	O
time	O
of	O
the	O
review	O
,	O
resulting	O
in	O
some	O
apps	O
with	O
"	O
huge	O
black	O
borders	O
"	O
resembling	O
iPhone	B-Operating_System
8	I-Operating_System
.	O
</s>
<s>
Patel	O
particularly	O
praised	O
Animoji	O
,	O
calling	O
it	O
"	O
probably	O
the	O
single	O
best	O
feature	O
on	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
"	O
,	O
writing	O
that	O
"	O
they	O
just	O
work	O
,	O
and	O
they	O
work	O
incredibly	O
well	O
"	O
.	O
</s>
<s>
Finally	O
,	O
he	O
wrote	O
that	O
Face	O
ID	O
was	O
the	O
whole	O
foundation	O
of	O
iPhone	B-Operating_System
X	I-Operating_System
,	O
and	O
stated	O
that	O
it	O
"	O
generally	O
works	O
great	O
"	O
,	O
though	O
acknowledging	O
the	O
occasional	O
misstep	O
,	O
in	O
which	O
users	O
must	O
"	O
actively	O
move	O
the	O
phone	O
closer	O
to	O
your	O
face	O
to	O
compensate	O
"	O
.	O
</s>
<s>
The	O
cost	O
of	O
repairing	O
an	O
iPhone	B-Device
is	O
also	O
very	O
large	O
compared	O
to	O
its	O
predecessors	O
.	O
</s>
<s>
If	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
is	O
damaged	O
by	O
user	O
damage	O
(	O
not	O
a	O
manufacturing	O
defect	O
)	O
,	O
screen	O
repairs	O
cost	O
US$279	O
,	O
and	O
other	O
repairs	O
like	O
replacing	O
iPhone	B-Operating_System
X	I-Operating_System
batteries	O
are	O
more	O
expensive	O
.	O
</s>
<s>
In	O
a	O
heavily	O
negative	O
review	O
,	O
Dennis	O
Green	O
of	O
Business	O
Insider	O
significantly	O
criticized	O
the	O
impossible	O
one-handed	O
use	O
of	O
iPhone	B-Operating_System
X	I-Operating_System
,	O
writing	O
that	O
the	O
new	O
gestures	O
to	O
use	O
the	O
phone	O
,	O
such	O
as	O
swiping	O
from	O
the	O
top	O
down	O
to	O
access	O
notifications	O
and	O
the	O
Control	O
Center	O
,	O
did	O
not	O
work	O
when	O
using	O
the	O
phone	O
with	O
only	O
one	O
hand	O
due	O
to	O
not	O
being	O
able	O
to	O
reach	O
the	O
top	O
.	O
</s>
<s>
His	O
review	O
sparked	O
outrage	O
among	O
Twitter	B-Application
users	O
,	O
many	O
of	O
whom	O
used	O
condescending	O
tones	O
,	O
which	O
Green	O
reasoned	O
as	O
"	O
I	O
do	O
n't	O
know	O
whether	O
the	O
anger	O
was	O
directed	O
toward	O
me	O
out	O
of	O
loyalty	O
to	O
Apple	O
or	O
to	O
justify	O
their	O
own	O
choice	O
to	O
spend	O
$	O
1,000	O
on	O
a	O
phone	O
.	O
</s>
<s>
A	O
week	O
after	O
iPhone	B-Operating_System
X	I-Operating_System
was	O
released	O
,	O
Vietnamese	O
security	O
firm	O
Bkav	O
announced	O
in	O
a	O
blog	O
post	O
that	O
it	O
had	O
successfully	O
created	O
a	O
$150	O
mask	O
that	O
tricked	O
Face	O
ID	O
,	O
though	O
WIRED	O
noted	O
that	O
Bkav	O
's	O
technique	O
was	O
more	O
of	O
a	O
"	O
proof-of-concept	O
"	O
rather	O
than	O
active	O
exploitation	O
risk	O
,	O
with	O
the	O
technique	O
requiring	O
a	O
detailed	O
measurement	O
or	O
digital	O
scan	O
of	O
the	O
iPhone	B-Device
owner	O
's	O
face	O
,	O
putting	O
the	O
real	O
risk	O
of	O
danger	O
only	O
to	O
targets	O
of	O
espionage	O
and	O
world	O
leaders	O
.	O
</s>
<s>
Much	O
of	O
the	O
debate	O
about	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
has	O
revolved	O
around	O
the	O
design	O
of	O
the	O
sensor	O
housing	O
,	O
dubbed	O
"	O
notch	O
"	O
by	O
the	O
media	O
,	O
at	O
the	O
top	O
of	O
the	O
display	O
.	O
</s>
<s>
Just	O
two	O
weeks	O
after	O
iPhone	B-Operating_System
X	I-Operating_System
's	O
release	O
,	O
Apple	O
approved	O
a	O
"	O
notch	O
remover	O
"	O
app	O
through	O
the	O
App	O
Store	O
,	O
that	O
places	O
black	O
bars	O
across	O
the	O
top	O
of	O
the	O
home	O
screen	O
to	O
make	O
the	O
notch	O
visually	O
disappear	O
.	O
</s>
<s>
iPhone	B-Operating_System
X	I-Operating_System
was	O
not	O
the	O
first	O
device	O
with	O
a	O
notch	O
;	O
both	O
the	O
Essential	B-Application
Phone	I-Application
and	O
Sharp	O
Aquos	O
S2	O
were	O
announced	O
before	O
it	O
and	O
had	O
a	O
display	O
notch	O
,	O
albeit	O
much	O
smaller	O
,	O
but	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
arguably	O
popularized	O
it	O
.	O
</s>
<s>
AT&T	O
announced	O
within	O
hours	O
that	O
the	O
issue	O
had	O
been	O
fixed	O
on	O
their	O
end	O
,	O
and	O
a	O
spokesperson	O
for	O
the	O
Verizon	B-Application
carrier	O
told	O
the	O
media	O
none	O
of	O
its	O
customers	O
were	O
affected	O
despite	O
some	O
reports	O
of	O
problems	O
.	O
</s>
<s>
In	O
November	O
2017	O
,	O
iPhone	B-Operating_System
X	I-Operating_System
users	O
reported	O
on	O
Reddit	B-Application
that	O
the	O
device	O
's	O
screen	O
would	O
become	O
unresponsive	O
after	O
experiencing	O
rapid	O
temperature	O
drops	O
.	O
</s>
<s>
Starting	O
with	O
iPhone	B-Application
7	I-Application
in	O
2016	O
,	O
Apple	O
has	O
used	O
about	O
half	O
Qualcomm	O
modem	O
chips	O
and	O
half	O
Intel	O
.	O
</s>
<s>
Professional	O
measurement	O
tests	O
performed	O
by	O
wireless	O
signal	O
testing	O
firm	O
Cellular	O
Insights	O
indicated	O
that	O
,	O
as	O
in	O
the	O
previous-gen	O
iPhone	B-Application
7	I-Application
,	O
Qualcomm	O
's	O
chips	O
outperform	O
Intel	O
's	O
in	O
LTE	O
download	O
speeds	O
,	O
up	O
to	O
67%	O
faster	O
in	O
very	O
weak	O
signal	O
conditions	O
,	O
resulting	O
in	O
some	O
sources	O
recommending	O
the	O
purchase	O
of	O
an	O
unlocked	O
iPhone	B-Operating_System
X	I-Operating_System
or	O
one	O
bought	O
through	O
cellular	O
carrier	O
Verizon	B-Application
,	O
in	O
order	O
to	O
get	O
the	O
models	O
featuring	O
the	O
faster	O
Qualcomm	O
modem	O
.	O
</s>
<s>
Additionally	O
,	O
CNET	O
reported	O
in	O
September	O
2017	O
that	O
the	O
new	O
iPhone	B-Device
models	O
,	O
including	O
X	O
,	O
8	B-Operating_System
and	I-Operating_System
8	I-Operating_System
Plus	I-Operating_System
,	O
do	O
not	O
have	O
the	O
ability	O
to	O
connect	O
to	O
the	O
next-generation	O
of	O
wireless	O
LTE	O
data	O
connection	O
,	O
despite	O
10	O
new	O
Android	B-Application
devices	O
,	O
including	O
flagships	O
from	O
main	O
smartphone	B-Application
competitor	O
Samsung	B-Application
,	O
all	O
having	O
the	O
capability	O
to	O
do	O
so	O
.	O
</s>
<s>
While	O
Apple	O
's	O
new	O
smartphones	B-Application
have	O
support	O
for	O
"	O
LTE	O
Advanced	O
"	O
,	O
with	O
a	O
theoretical	O
peak	O
speed	O
of	O
500	O
megabits	O
per	O
second	O
,	O
the	O
Android	B-Application
models	O
have	O
the	O
ability	O
to	O
connect	O
to	O
"	O
Gigabit	O
LTE	O
"	O
,	O
allowing	O
theoretical	O
speeds	O
up	O
to	O
1	O
gigabit	O
per	O
second	O
,	O
doubling	O
Apple	O
's	O
speed	O
.	O
</s>
<s>
After	O
releasing	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
in	O
Japan	O
and	O
China	O
,	O
customers	O
experienced	O
issues	O
related	O
to	O
the	O
phone	O
's	O
NFC	O
while	O
trying	O
to	O
access	O
public	O
transit	O
smart	O
card	O
readers	O
.	O
</s>
<s>
In	O
April	O
2018	O
,	O
Apple	O
released	O
a	O
revision	O
to	O
the	O
iPhone	B-Operating_System
X	I-Operating_System
,	O
that	O
included	O
a	O
vastly	O
improved	O
NFC	O
chip	O
.	O
</s>
<s>
Apple	O
has	O
determined	O
an	O
issue	O
with	O
certain	O
iPhone	B-Operating_System
X	I-Operating_System
devices	O
where	O
the	O
display	O
would	O
n't	O
respond	O
to	O
the	O
user	O
's	O
touch	O
,	O
due	O
to	O
a	O
component	O
that	O
might	O
fail	O
on	O
the	O
display	O
module	O
.	O
</s>
