<s>
OxygenOS	B-Application
(	O
)	O
is	O
an	O
Android-based	O
operating	B-General_Concept
system	I-General_Concept
(	O
OS	O
)	O
developed	O
by	O
Chinese	O
smartphone	O
manufacturer	O
OnePlus	O
exclusively	O
for	O
their	O
smartphones	O
.	O
</s>
<s>
OxygenOS	B-Application
was	O
developed	O
for	O
their	O
overseas	O
market	O
.	O
</s>
<s>
There	O
used	O
to	O
also	O
be	O
another	O
version	O
of	O
the	O
OS	O
designed	O
specifically	O
for	O
the	O
Chinese	O
market	O
called	O
HydrogenOS	B-Application
(	O
)	O
.	O
</s>
<s>
In	O
an	O
interview	O
published	O
on	O
3	O
September	O
2016	O
,	O
XDA	O
Developers	O
revealed	O
OnePlus	O
was	O
"	O
actively	O
merging	O
both	O
platforms	O
(	O
OxygenOS	B-Application
and	O
HydrogenOS	B-Application
)	O
into	O
a	O
single	O
cohesive	O
operating	B-General_Concept
system	I-General_Concept
based	O
on	O
Android	B-Application
"	O
.	O
</s>
<s>
Version	O
1.0	O
was	O
based	O
on	O
Android	B-Application
5.0.1	I-Application
and	O
was	O
available	O
only	O
for	O
the	O
OnePlus	B-Application
One	I-Application
via	O
a	O
flashable	O
ZIP	O
provided	O
through	O
the	O
OnePlus	O
website	O
.	O
</s>
<s>
Notable	O
features	O
of	O
version	O
2.0	O
and	O
2.1.1	O
include	O
app	B-Application
permissions	O
,	O
Waves	O
MaxxAudio	O
,	O
SwiftKey	B-Device
keyboard	O
,	O
off-screen	O
gestures	B-General_Concept
,	O
custom	O
icons	O
,	O
dark	B-General_Concept
mode	I-General_Concept
,	O
manual	O
camera	O
mode	O
,	O
and	O
RAW	O
support	O
for	O
3rd	O
party	O
apps	O
,	O
like	O
Camera	O
FV-5	O
2.75	O
.	O
</s>
<s>
On	O
31	O
December	O
2016	O
,	O
OnePlus	O
released	O
OxygenOS	B-Application
4.0.0	O
based	O
on	O
Android	B-Application
Nougat	I-Application
and	O
includes	O
its	O
features	O
and	O
several	O
other	O
modifications	O
to	O
the	O
public	O
via	O
OTA	O
download	O
.	O
</s>
<s>
On	O
31	O
January	O
2018	O
,	O
OnePlus	O
released	O
OxygenOS	B-Application
5.0.3	O
based	O
on	O
Android	B-Application
Oreo	I-Application
to	O
the	O
public	O
via	O
OTA	O
download	O
.	O
</s>
<s>
In	O
May	O
2018	O
,	O
OnePlus	O
launched	O
OnePlus	B-Application
6	I-Application
with	O
OxygenOS	B-Application
based	O
on	O
Android	B-Application
Oreo	I-Application
8.1	O
.	O
</s>
<s>
On	O
29	O
October	O
2018	O
,	O
OnePlus	O
launched	O
OnePlus	B-Application
6T	I-Application
with	O
OxygenOS	B-Application
9.0	O
based	O
on	O
Android	B-Application
Pie	I-Application
.	O
</s>
<s>
On	O
25	O
December	O
2018	O
,	O
OnePlus	O
released	O
OxygenOS	B-Application
9.0.0	O
based	O
on	O
Android	B-Application
Pie	I-Application
for	O
OnePlus	O
5/5T	O
to	O
the	O
public	O
via	O
OTA	O
download	O
.	O
</s>
<s>
On	O
21	O
September	O
2019	O
,	O
OnePlus	O
announced	O
the	O
release	O
of	O
OxygenOS	B-Application
version	O
10.0	O
based	O
on	O
Android	B-Application
10	I-Application
for	O
OnePlus	B-Application
7	I-Application
and	O
7	O
Pro	O
.	O
</s>
<s>
This	O
initial	O
release	O
was	O
followed	O
by	O
Android	B-Application
10	I-Application
based	O
builds	O
for	O
older	O
devices	O
later	O
.	O
</s>
<s>
On	O
06	O
August	O
2022	O
,	O
OnePlus	O
announced	O
OxygenOS	B-Application
13	O
which	O
is	O
based	O
on	O
Android	B-Application
13	I-Application
.	O
</s>
<s>
OxygenOS	B-Application
13	O
is	O
eligible	O
for	O
OnePlus	B-Application
10	I-Application
series	O
to	O
OnePlus	B-Application
8	I-Application
series	O
smartphones	O
and	O
some	O
Nord	O
smartphones	O
.	O
</s>
<s>
In	O
July	O
2021	O
,	O
OnePlus	O
merged	O
OxygenOS	B-Application
with	O
Oppo	O
’s	O
ColorOS	B-Application
.	O
</s>
<s>
Both	O
companies’	O
software	O
will	O
remain	O
separate	O
and	O
continue	O
to	O
serve	O
their	O
individual	O
regions	O
(	O
OxygenOS	B-Application
for	O
OnePlus	O
phones	O
globally	O
,	O
ColorOS	B-Application
on	O
OnePlus	O
and	O
Oppo	O
devices	O
in	O
China	O
)	O
but	O
share	O
a	O
common	O
codebase	O
,	O
which	O
OnePlus	O
says	O
should	O
standardize	O
its	O
software	O
experience	O
and	O
streamline	O
the	O
development	O
process	O
for	O
future	O
OxygenOS	B-Application
updates	O
.	O
</s>
