<s>
The	O
OnePlus	B-Application
One	I-Application
(	O
colloquially	O
abbreviated	O
to	O
OPO	O
and	O
also	O
known	O
as	O
OnePlus	B-Application
1	I-Application
)	O
is	O
an	O
Android	B-Application
smartphone	B-Application
manufactured	O
by	O
OnePlus	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
One	I-Application
was	O
designed	O
to	O
compare	O
favorably	O
–	O
in	O
performance	O
,	O
quality	O
,	O
and	O
price	O
–	O
to	O
flagship	O
devices	O
by	O
leading	O
smartphone	B-Application
manufacturers	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
One	I-Application
shipped	O
to	O
most	O
markets	O
with	O
the	O
Cyanogen	O
OS	O
operating	O
system	O
pre-installed	O
,	O
a	O
commercial	O
variant	O
of	O
CyanogenMod	B-Application
.	O
</s>
<s>
The	O
company	O
's	O
main	O
goal	O
was	O
to	O
design	O
his	O
"	O
dream	O
"	O
smartphone	B-Application
;	O
one	O
that	O
would	O
balance	O
the	O
quality	O
of	O
high-end	O
devices	O
from	O
its	O
major	O
competitors	O
with	O
a	O
lower	O
price	O
than	O
other	O
phones	O
in	O
its	O
class	O
.	O
</s>
<s>
The	O
company	O
's	O
primary	O
cost-cutting	O
measure	O
was	O
a	O
decision	O
to	O
exclusively	O
sell	O
the	O
device	O
online	O
,	O
rather	O
than	O
at	O
retail	O
or	O
through	O
wireless	O
carriers	O
,	O
citing	O
the	O
success	O
of	O
a	O
similar	O
online	O
sales	O
model	O
for	O
Nexus	B-Device
devices	I-Device
.	O
</s>
<s>
Continuing	O
Lau	O
's	O
association	O
with	O
the	O
platform	O
from	O
the	O
Oppo	B-Application
N1	I-Application
,	O
OnePlus	O
entered	O
into	O
a	O
non-exclusive	O
licensing	O
agreement	O
with	O
Cyanogen	O
Inc	O
.	O
to	O
base	O
its	O
product	O
's	O
Android	B-Application
software	I-Application
upon	O
Cyanogen	O
OS	O
,	O
a	O
commercial	O
variant	O
of	O
the	O
popular	O
custom	O
ROM	O
CyanogenMod	B-Application
,	O
and	O
use	O
its	O
trademarks	O
outside	O
China	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
One	I-Application
was	O
officially	O
unveiled	O
on	O
23	O
April	O
2014	O
for	O
a	O
limited	O
release	O
on	O
25	O
April	O
:	O
described	O
as	O
a	O
"	O
flagship	O
killer	O
"	O
,	O
its	O
prices	O
were	O
set	O
at	O
US$299	O
and	O
US$349	O
for	O
the	O
16GB	O
and	O
64GB	O
models	O
respectively	O
—	O
which	O
one	O
critic	O
estimated	O
was	O
roughly	O
half	O
the	O
price	O
of	O
the	O
then	O
recently	O
unveiled	O
Samsung	B-Application
Galaxy	I-Application
S5	I-Application
.	O
</s>
<s>
In	O
an	O
announcement	O
on	O
20	O
April	O
2015	O
marking	O
the	O
one-year	O
anniversary	O
of	O
its	O
release	O
,	O
OnePlus	O
announced	O
that	O
the	O
One	O
would	O
be	O
available	O
without	O
an	O
invite	O
"	O
forever	O
"	O
,	O
but	O
hinted	O
that	O
the	O
requirement	O
may	O
return	O
for	O
its	B-Application
successor	I-Application
.	O
</s>
<s>
Invites	O
were	O
first	O
given	O
out	O
through	O
a	O
promotion	O
known	O
as	O
"	O
Smash	O
the	O
Past	O
"	O
,	O
in	O
which	O
100	O
users	O
would	O
be	O
selected	O
to	O
win	O
an	O
opportunity	O
to	O
purchase	O
a	O
16GB	O
OnePlus	B-Application
One	I-Application
for	O
only	O
$1	O
,	O
along	O
with	O
three	O
invites	O
they	O
can	O
give	O
to	O
friends	O
,	O
if	O
they	O
record	O
a	O
video	O
of	O
themselves	O
breaking	O
their	O
previous	O
phone	O
.	O
</s>
<s>
Some	O
users	O
misinterpreted	O
the	O
promotion	O
,	O
however	O
,	O
and	O
prematurely	O
posted	O
videos	O
on	O
YouTube	B-General_Concept
of	O
them	O
breaking	O
their	O
phones	O
.	O
</s>
<s>
Sales	O
of	O
the	O
OnePlus	B-Application
One	I-Application
in	O
India	O
were	O
temporarily	O
halted	O
following	O
a	O
temporary	O
injunction	O
granted	O
to	O
Micromax	O
Mobile	O
,	O
alleging	O
that	O
the	O
sale	O
of	O
the	O
device	O
in	O
India	O
violated	O
its	O
exclusive	O
rights	O
to	O
distribute	O
Cyanogen-branded	O
products	O
in	O
South	O
Asia	O
—	O
an	O
agreement	O
announced	O
in	O
November	O
2014	O
as	O
part	O
of	O
a	O
new	O
joint	O
venture	O
,	O
YU	O
,	O
and	O
that	O
its	O
agreement	O
superseded	O
the	O
agreement	O
Cyanogen	O
Inc	O
.	O
had	O
established	O
with	O
OnePlus	O
.	O
</s>
<s>
In	O
response	O
to	O
the	O
partnership	O
,	O
OnePlus	O
had	O
already	O
begun	O
the	O
development	O
of	O
a	O
new	O
,	O
in-house	O
Android	B-Application
distribution	O
,	O
known	O
as	O
"	O
OxygenOS	B-Application
"	O
,	O
which	O
it	O
planned	O
to	O
replace	O
CyanogenMod	B-Application
with	O
for	O
the	O
device	O
that	O
the	O
company	O
planned	O
via	O
software	O
updates	O
to	O
models	O
distributed	O
in	O
India	O
,	O
along	O
with	O
a	O
version	O
for	O
Chinese	O
models	O
known	O
as	O
"	O
H2OS	O
"	O
.	O
</s>
<s>
The	O
device	O
's	O
internal	O
hardware	O
includes	O
a	O
quad-core	O
Qualcomm	B-Architecture
Snapdragon	I-Architecture
801	O
system-on-chip	O
clocked	O
at	O
2.5GHz	O
,	O
3GB	O
of	O
RAM	O
,	O
and	O
a	O
5.5-inch	O
,	O
JDI	O
1080p	O
IPS	B-Architecture
LCD	I-Architecture
display	O
.	O
</s>
<s>
Its	O
rear-facing	O
camera	O
features	O
a	O
13	O
megapixel	O
,	O
Sony-manufactured	O
Exmor	B-Device
IMX214	O
sensor	B-Algorithm
,	O
alongside	O
a	O
5-megapixel	O
front-facing	O
camera	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
One	I-Application
supports	O
LTE	O
networks	O
using	O
bands	O
1	O
,	O
3	O
,	O
4	O
,	O
7	O
,	O
17	O
,	O
38	O
,	O
and	O
40	O
.	O
</s>
<s>
Due	O
to	O
the	O
company	O
's	O
startup	O
stature	O
,	O
only	O
one	O
model	O
of	O
the	O
device	O
was	O
released	O
worldwide	O
,	O
without	O
any	O
additional	O
regional	O
SKUs	O
like	O
other	O
smartphones	B-Application
.	O
</s>
<s>
The	O
chassis	O
of	O
the	O
OnePlus	B-Application
One	I-Application
is	O
constructed	O
from	O
magnesium	O
,	O
and	O
is	O
accompanied	O
by	O
a	O
curved	O
,	O
textured	O
rear	O
cover	O
in	O
either	O
black	O
or	O
white	O
.	O
</s>
<s>
Outside	O
China	O
,	O
the	O
OnePlus	B-Application
One	I-Application
shipped	O
with	O
CyanogenMod	B-Application
11S	O
,	O
based	O
on	O
Android	B-Application
4.4.4	I-Application
"	I-Application
KitKat	I-Application
"	I-Application
.	O
</s>
<s>
The	O
latest	O
version	O
of	O
CyanogenMod	B-Application
11S	O
is	O
11.0-XNPH05Q	O
.	O
</s>
<s>
In	O
China	O
,	O
OnePlus	B-Application
One	I-Application
ships	O
with	O
Oppo	O
's	O
ColorOS	O
distribution	O
,	O
based	O
on	O
Android	B-Application
4.3	I-Application
"	I-Application
Jelly	I-Application
Bean	I-Application
"	I-Application
.	O
</s>
<s>
Alongside	O
additional	O
features	O
added	O
to	O
the	O
Android	B-Application
platform	I-Application
through	O
Cyanogen	O
(	O
including	O
wider	O
customization	O
options	O
,	O
an	O
audio	O
equalizer	O
,	O
encrypted	O
messaging	O
,	O
and	O
application	O
privacy	O
controls	O
)	O
,	O
the	O
11S	O
software	O
adds	O
persistent	O
voice	O
commands	O
,	O
and	O
gestures	O
that	O
can	O
be	O
performed	O
while	O
the	O
phone	O
is	O
in	O
standby	O
to	O
perform	O
various	O
functions	O
,	O
such	O
as	O
double-tapping	O
the	O
screen	O
to	O
turn	O
it	O
on	O
,	O
drawing	O
a	O
circle	O
to	O
go	O
to	O
the	O
camera	O
,	O
and	O
drawing	O
a	O
"	O
V	O
"	O
to	O
activate	O
flashlight	O
mode	O
.	O
</s>
<s>
An	O
upgrade	O
to	O
Cyanogen	O
OS	O
12.0	O
,	O
based	O
on	O
Android	B-Application
5.0.2	I-Application
"	I-Application
Lollipop	I-Application
"	I-Application
was	O
released	O
for	O
all	O
OnePlus	B-Application
One	I-Application
devices	O
outside	O
China	O
on	O
14	O
April	O
2015	O
.	O
</s>
<s>
The	O
latest	O
version	O
of	O
Cyanogen	O
OS	O
for	O
this	O
phone	O
is	O
13.1.2-ZNH2KAS3P0-bacon	O
based	O
on	O
Android	B-Application
Marshmallow	I-Application
6.0.1(AOSP )	O
,	O
released	O
in	O
August	O
2016	O
.	O
</s>
<s>
This	O
brings	O
latest	O
September	O
Security	O
Patches	O
for	O
Android	B-Application
and	O
improves	O
the	O
deep	O
integration	O
of	O
"	O
Cortana	O
"	O
-Microsoft	O
'	O
s	O
Digital	B-General_Concept
Assistant	O
into	O
Cyanogen	O
OS	O
due	O
to	O
strategic	O
partnership	O
between	O
Microsoft	O
and	O
Cyanogen	O
;	O
Microsoft	O
also	O
being	O
an	O
important	O
investor	O
in	O
the	O
company	O
.	O
</s>
<s>
Two	O
in-house	O
Lollipop-based	O
distributions	O
,	O
OxygenOS	B-Application
and	O
HydrogenOS	B-Application
,	O
were	O
released	O
earlier	O
,	O
on	O
4	O
April	O
2015	O
,	O
outside	O
and	O
inside	O
China	O
respectively	O
.	O
</s>
<s>
On	O
9	O
April	O
2016	O
,	O
OnePlus	B-Application
One	I-Application
devices	O
running	O
Cyanogen	O
OS	O
started	O
receiving	O
Cyanogen	O
OS	O
13.0.1	O
based	O
on	O
Android	B-Application
Marshmallow	I-Application
6.0.1	O
.	O
</s>
<s>
CyanogenOS	O
13.1	O
for	O
OnePlus	B-Application
One	I-Application
includes	O
mods	O
for	O
Skype	O
,	O
OneNote	O
,	O
Microsoft	O
Hyperlapse	O
and	O
an	O
updated	O
Cortana	O
mod	O
.	O
</s>
<s>
Android	B-Application
9.0	I-Application
"	I-Application
Pie	I-Application
"	I-Application
is	O
available	O
for	O
the	O
device	O
through	O
the	O
successor	O
of	O
CyanogenMod	B-Application
,	O
LineageOS	B-Application
.	O
</s>
<s>
The	O
same	O
applied	O
for	O
Android	B-Application
10	I-Application
and	O
Android	B-Application
11	I-Application
.	O
</s>
<s>
Third-party	O
operating	O
systems	O
such	O
as	O
Ubuntu	B-Protocol
Touch	I-Protocol
can	O
also	O
be	O
installed	O
on	O
the	O
OnePlus	B-Application
One	I-Application
.	O
</s>
<s>
The	O
OnePlus	B-Application
One	I-Application
has	O
received	O
a	O
positive	O
reception	O
,	O
not	O
withstanding	O
occasional	O
technical	O
issues	O
and	O
lack	O
of	O
support	O
.	O
</s>
<s>
The	O
design	O
was	O
unique	O
compared	O
to	O
other	O
smartphones	B-Application
,	O
with	O
the	O
rear	O
panel	O
's	O
"[white]	O
crisp	O
smooth	O
plastic	O
or	O
the	O
 [ black ] 	O
sandpaper-like	O
texture	O
 [ that ] 	O
feels	O
good	O
regardless	O
of	O
your	O
preference	O
"	O
,	O
while	O
"	O
the	O
front	O
panel	O
is	O
also	O
beautiful	O
because	O
of	O
its	O
minimalist	O
style	O
and	O
lack	O
of	O
visible	O
hardware	O
buttons	O
"	O
.	O
</s>
<s>
Tests	O
found	O
that	O
the	O
One	O
usually	O
performed	O
as	O
well	O
as	O
or	O
even	O
better	O
despite	O
being	O
half	O
the	O
price	O
of	O
its	O
rivals	O
,	O
not	O
only	O
due	O
to	O
its	O
specs	O
but	O
also	O
attributed	O
to	O
its	O
largely	O
bloatware-free	O
CyanogenMod	B-Application
OS	O
.	O
</s>
<s>
In	O
addition	O
,	O
its	O
CyanogenMod	B-Application
operating	O
system	O
offers	O
more	O
customization	O
options	O
than	O
stock	O
Android	B-Application
albeit	O
being	O
less	O
stable	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
One	I-Application
was	O
one	O
of	O
the	O
fastest	O
phones	O
upon	O
its	O
release	O
and	O
its	O
specifications	O
have	O
aged	O
well	O
after	O
a	O
couple	O
of	O
years	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
One	I-Application
was	O
generally	O
considered	O
superior	O
to	O
its	O
closest	O
competition	O
.	O
</s>
<s>
The	O
similarly-priced	O
Nexus	B-Device
5	I-Device
was	O
more	O
widely	O
available	O
and	O
had	O
more	O
guaranteed	O
updates	O
from	O
Google	O
,	O
however	O
it	O
suffered	O
from	O
some	O
design	O
compromises	O
including	O
mediocre	O
battery	O
life	O
and	O
camera	O
quality	O
to	O
keep	O
the	O
price	O
low	O
,	O
plus	O
its	O
internal	O
hardware	O
was	O
aging	O
.	O
</s>
<s>
In	O
terms	O
of	O
specifications	O
and	O
size	O
,	O
the	O
OnePlus	B-Application
One	I-Application
could	O
be	O
compared	O
to	O
the	O
much	O
pricier	O
5.5-inch	O
LG	B-Application
G3	I-Application
whose	O
screen	O
was	O
higher	O
resolution	O
but	O
inferior	O
quality	O
.	O
</s>
<s>
Similar	O
to	O
the	O
Google	B-Device
Nexus	I-Device
line	O
of	O
devices	O
,	O
the	O
One	O
has	O
expanded	O
the	O
trend	O
of	O
high	O
spec	O
but	O
mid-priced	O
Android	B-Application
devices	O
;	O
by	O
2015	O
when	O
the	O
succeeding	O
OnePlus	B-Application
2	I-Application
was	O
released	O
there	O
was	O
competition	O
from	O
numerous	O
affordable	O
flagships	O
including	O
the	O
Moto	B-Application
X	I-Application
Pure	I-Application
and	O
Asus	O
ZenFone	O
2	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
One	I-Application
's	O
original	O
distribution	O
via	O
an	O
invite-only	O
order	O
system	O
made	O
the	O
device	O
difficult	O
to	O
acquire	O
,	O
so	O
some	O
reviewers	O
decided	O
against	O
recommending	O
it	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
One	I-Application
,	O
in	O
retrospect	O
,	O
has	O
been	O
considered	O
one	O
of	O
the	O
best-supported	O
community	O
developer	O
phones	O
,	O
with	O
a	O
wide	O
variety	O
of	O
ROMs	O
and	O
custom	O
kernels	O
.	O
</s>
<s>
The	O
succeeding	O
OnePlus	B-Application
2	I-Application
and	O
subsequent	O
OnePlus	O
phones	O
have	O
not	O
amassed	O
such	O
third-party	O
support	O
,	O
furthermore	O
their	O
pricing	O
has	O
risen	O
to	O
mainstream	O
.	O
</s>
<s>
As	O
of	O
the	O
end	O
of	O
2014	O
,	O
the	O
OnePlus	B-Application
One	I-Application
has	O
sold	O
over	O
one	O
million	O
units	O
,	O
despite	O
only	O
planning	O
to	O
sell	O
up	O
to	O
50,000	O
units	O
.	O
</s>
