<s>
The	O
OnePlus	B-Application
2	I-Application
(	O
also	O
abbreviated	O
as	O
OP2	O
)	O
is	O
a	O
smartphone	B-Application
designed	O
by	O
OnePlus	O
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
to	O
the	O
OnePlus	B-Application
One	I-Application
.	O
</s>
<s>
OnePlus	O
revealed	O
the	O
phone	O
on	O
28	O
July	O
2015	O
via	O
virtual	B-Application
reality	I-Application
,	O
using	O
Google	B-Application
's	I-Application
Cardboard	B-Device
visor	O
and	O
their	O
own	O
app	O
.	O
</s>
<s>
OnePlus	O
sold	O
out	O
30,000	O
units	O
of	O
the	O
OnePlus	B-Application
2	I-Application
in	O
China	O
within	O
64	O
seconds	O
after	O
launching	O
the	O
product	O
sale	O
.	O
</s>
<s>
On	O
25	O
January	O
2015	O
,	O
OnePlus	O
announced	O
the	O
smartphone	B-Application
's	O
official	O
name	O
as	O
OnePlus	B-Application
2	I-Application
.	O
</s>
<s>
It	O
was	O
also	O
later	O
reported	O
that	O
the	O
OnePlus	B-Application
2	I-Application
would	O
have	O
a	O
late	O
2015	O
release	O
,	O
possibly	O
due	O
to	O
hardware	O
issues	O
with	O
its	O
processor	O
.	O
</s>
<s>
In	O
early-April	O
2015	O
,	O
OnePlus	O
confirmed	O
the	O
OnePlus	B-Application
2	I-Application
will	O
not	O
feature	O
wireless	B-Application
charging	I-Application
and	O
NFC	O
.	O
</s>
<s>
In	O
October	O
2015	O
,	O
OnePlus	O
co-founder	O
Carl	O
Pei	O
said	O
that	O
the	O
OnePlus	B-Application
2	I-Application
will	O
be	O
the	O
only	O
flagship	O
from	O
the	O
company	O
for	O
the	O
year	O
2015	O
,	O
but	O
another	O
phone	O
,	O
called	O
the	O
OnePlus	B-Application
X	I-Application
,	O
was	O
released	O
.	O
</s>
<s>
OnePlus	O
posted	O
that	O
it	O
will	O
use	O
an	O
invite	O
system	O
to	O
handle	O
sales	O
of	O
the	O
OnePlus	B-Application
2	I-Application
,	O
exclusively	O
through	O
the	O
company	O
's	O
website	O
,	O
like	O
the	O
OnePlus	B-Application
One	I-Application
.	O
</s>
<s>
OnePlus	O
claims	O
that	O
the	O
invite	O
system	O
is	O
more	O
efficient	O
than	O
the	O
invite	O
system	O
used	O
for	O
the	O
sales	O
of	O
the	O
OnePlus	B-Application
One	I-Application
,	O
the	O
OnePlus	B-Application
2	I-Application
's	O
predecessor	O
.	O
</s>
<s>
According	O
to	O
co-founder	O
Carl	O
Pei	O
,	O
there	O
will	O
be	O
30	O
to	O
50	O
times	O
more	O
invites	O
from	O
the	O
start	O
to	O
match	O
the	O
greater	O
demand	O
for	O
the	O
OnePlus	B-Application
2	I-Application
.	O
</s>
<s>
Within	O
72	O
hours	O
of	O
being	O
launched	O
,	O
the	O
OnePlus	B-Application
2	I-Application
had	O
already	O
accumulated	O
over	O
1	O
million	O
reservations	O
.	O
</s>
<s>
Within	O
one	O
week	O
after	O
being	O
launched	O
,	O
the	O
OnePlus	B-Application
2	I-Application
had	O
accumulated	O
over	O
2	O
million	O
reservations	O
.	O
</s>
<s>
In	O
September	O
,	O
2015	O
,	O
the	O
OnePlus	B-Application
2	I-Application
became	O
available	O
in	O
Israel	O
without	O
an	O
invite	O
,	O
through	O
its	O
exclusive	O
distributor	O
,	O
C-DATA	O
.	O
</s>
<s>
This	O
came	O
after	O
buyers	O
complained	O
of	O
buying	O
the	O
OnePlus	B-Application
2	I-Application
(	O
without	O
an	O
invite	O
)	O
that	O
came	O
preloaded	O
with	O
malware	O
.	O
</s>
<s>
A	O
week	O
later	O
(	O
on	O
19	O
October	O
2015	O
)	O
,	O
Malaysian	O
carrier	O
Maxis	O
offered	O
the	O
OnePlus	B-Application
2	I-Application
invite-free	O
for	O
MYR	O
1788	O
( $420	O
)	O
exclusively	O
via	O
the	O
Maxis	O
Website	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
2	I-Application
features	O
a	O
revamped	O
design	O
meant	O
to	O
put	O
it	O
at	O
the	O
top	O
with	O
the	O
rest	O
of	O
its	O
flagship	O
competitors	O
.	O
</s>
<s>
The	O
OnePlus	B-Application
2	I-Application
and	O
its	O
predecessor	O
,	O
the	O
OnePlus	B-Application
One	I-Application
,	O
have	O
comparable	O
displays	O
,	O
each	O
5.5	O
"	O
LCD	B-Device
1920	O
x	O
1080	O
full	O
HD	O
resolution	O
screens	O
,	O
with	O
Corning	O
Gorilla	O
Glass	O
protection	O
.	O
</s>
<s>
New	O
to	O
the	O
OnePlus	B-Application
2	I-Application
is	O
its	O
fingerprint	O
sensor	O
which	O
can	O
optionally	O
serve	O
as	O
a	O
capacitive	B-Device
home	O
button	O
,	O
along	O
with	O
back	O
and	O
multitasking	O
navigation	O
keys	O
,	O
but	O
they	O
can	O
be	O
disabled	O
in	O
favor	O
of	O
customizable	O
navigation	O
"	O
soft	B-General_Concept
keys	I-General_Concept
"	O
rendered	O
on-screen	O
.	O
</s>
<s>
There	O
are	O
two	O
versions	O
of	O
the	O
OnePlus	B-Application
2	I-Application
.	O
</s>
<s>
The	O
White	O
Basic	O
version	O
features	O
16	O
GB	O
internal	O
storage	O
,	O
and	O
3	O
GB	O
LPDDR4	O
RAM	B-Architecture
.	O
</s>
<s>
The	O
Sandstone	O
Black	O
Premium	O
version	O
has	O
64	O
GB	O
internal	O
storage	O
with	O
4	O
GB	O
LPDDR4	O
RAM	B-Architecture
.	O
</s>
<s>
The	O
handset	O
is	O
powered	O
by	O
the	O
Qualcomm	O
Snapdragon	O
810	O
v2.1	O
64-bit	B-Device
octa-core	B-Architecture
chip	O
purposefully	O
underclocked	B-Device
to	O
1.8	O
GHz	O
to	O
avoid	O
any	O
overheating	O
issues	O
.	O
</s>
<s>
The	O
system	B-Architecture
on	I-Architecture
chip	I-Architecture
also	O
includes	O
an	O
Adreno	B-General_Concept
430	I-General_Concept
graphics	B-Architecture
processor	I-Architecture
clocked	O
at	O
630MHz	O
.	O
</s>
<s>
For	O
its	O
rear-facing	O
camera	O
,	O
the	O
OnePlus	B-Application
2	I-Application
utilizes	O
an	O
OmniVision	O
OV13860	O
13-megapixel	O
image	B-Algorithm
sensor	I-Algorithm
with	O
features	O
including	O
a	O
1/2.6	O
-inch	O
sensor	O
size	O
,	O
f/2.0	O
aperture	O
,	O
laser	O
autofocus	O
,	O
optical	O
image	O
stabilization	O
,	O
dual	O
tone	O
LED	O
flash	O
,	O
4K	B-Architecture
and	O
slow	O
motion	O
720p	O
video	O
recording	O
ability	O
.	O
</s>
<s>
Compared	O
to	O
its	O
competitors	O
the	O
Samsung	B-Application
Galaxy	I-Application
S6	I-Application
and	O
LG	B-Application
G4	I-Application
which	O
both	O
have	O
16-megapixel	O
sensors	O
,	O
the	O
smaller	O
megapixel	O
count	O
of	O
the	O
OnePlus	B-Application
2	I-Application
,	O
"	O
allows	O
for	O
individual	O
pixels	B-Algorithm
to	O
be	O
made	O
bigger	O
.	O
</s>
<s>
Bigger	O
pixels	B-Algorithm
capture	O
more	O
light	O
per	O
pixel	B-Algorithm
than	O
smaller	O
ones	O
and	O
this	O
,	O
in	O
turn	O
,	O
reduces	O
the	O
amount	O
of	O
digital	O
noise	O
or	O
'	O
grain	O
 '	O
showing	O
up	O
in	O
photos	O
,	O
especially	O
in	O
low	O
light	O
situations.	O
"	O
</s>
<s>
Other	O
features	O
include	O
a	O
dual	O
SIM	O
(	O
nano	O
SIM	O
)	O
card	O
layout	O
with	O
4G	O
LTE	O
compatibility	O
and	O
the	O
handset	O
is	O
the	O
first	O
smartphone	B-Application
with	O
a	O
worldwide	O
release	O
to	O
feature	O
a	O
USB-C	O
port	O
.	O
</s>
<s>
OnePlus	O
explained	O
that	O
NFC	O
was	O
not	O
used	O
by	O
enough	O
OnePlus	B-Application
One	I-Application
users	O
for	O
NFC	O
to	O
reasonably	O
be	O
added	O
to	O
the	O
OnePlus	B-Application
2	I-Application
.	O
</s>
<s>
The	O
OnePlus	B-Application
2	I-Application
comes	O
preloaded	O
with	O
Android	B-Application
5.1.1	I-Application
"	O
Lollipop	B-Application
"	O
with	O
OnePlus	O
 '	O
OxygenOS	B-Application
version	O
2.0	O
on	O
top	O
of	O
it	O
.	O
</s>
<s>
An	O
update	O
to	O
OxygenOS	B-Application
version	O
2.2.1	O
was	O
released	O
for	O
the	O
OnePlus	B-Application
2	I-Application
in	O
Feb	O
2016	O
.	O
</s>
<s>
In	O
May	O
2016	O
,	O
OnePlus	O
released	O
an	O
OTA	O
update	O
of	O
Oxygen	B-Application
OS	I-Application
3.0	O
with	O
Android	B-Application
Marshmallow	O
for	O
its	O
OnePlus	B-Application
2	I-Application
users	O
.	O
</s>
<s>
Oneplus	O
released	O
an	O
updated	O
version	O
of	O
Oxygen	B-Application
OS	I-Application
(	O
OOS3.5.5	O
)	O
on	O
Christmas	O
Eve	O
,	O
this	O
update	O
mainly	O
covered	O
VoLTE	O
,	O
gesture	O
updates	O
,	O
enhanced	O
UI	O
and	O
defect	O
fixes	O
.	O
</s>
<s>
The	O
Oneplus	O
Team	O
quickly	O
responded	O
with	O
fixing	O
the	O
defect	O
and	O
releasing	O
the	O
next	O
version	O
of	O
Oxygen	B-Application
OS	I-Application
(	O
OOS	O
3.5.6	O
)	O
that	O
fixed	O
all	O
possible	O
issues	O
.	O
</s>
<s>
Despite	O
telling	O
consumers	O
that	O
the	O
OnePlus	B-Application
2	I-Application
would	O
be	O
updated	O
to	O
Android	B-Application
7	O
"	O
Nougat	O
"	O
,	O
it	O
was	O
eventually	O
confirmed	O
that	O
this	O
was	O
not	O
to	O
happen	O
,	O
leaving	O
the	O
device	O
on	O
the	O
older	O
Android	B-Application
6.0.1	O
.	O
</s>
<s>
OnePlus	O
released	O
OxygenOS	B-Application
3.6.0	O
in	O
July	O
2017	O
,	O
with	O
included	O
Android	B-Application
security	O
patch	O
level	O
1	O
June	O
2017	O
and	O
small	O
fixes	O
.	O
</s>
<s>
It	O
received	O
an	O
update	O
OxygenOS	B-Application
3.6.1	O
in	O
October	O
2017	O
,	O
with	O
included	O
Android	B-Application
security	O
patches	O
,	O
WPA2	O
security	O
issues	O
and	O
general	O
bug	O
fixes	O
&	O
improvement	O
.	O
</s>
