<s>
Android	B-Application
Oreo	I-Application
(	O
codenamed	O
Android	B-Application
O	I-Application
during	O
development	O
)	O
is	O
the	O
eighth	O
major	O
release	O
and	O
the	O
15th	O
version	O
of	O
the	O
Android	B-Application
mobile	I-Application
operating	O
system	O
.	O
</s>
<s>
It	O
contains	O
a	O
number	O
of	O
major	O
features	O
,	O
including	O
notification	O
grouping	O
,	O
picture-in-picture	O
support	O
for	O
video	O
,	O
performance	O
improvements	O
,	O
and	O
battery	O
usage	O
optimization	O
,	O
and	O
support	O
for	O
autofillers	O
,	O
Bluetooth	B-Protocol
5	O
,	O
system-level	O
integration	O
with	O
VoIP	B-Application
apps	O
,	O
wide	O
color	O
gamuts	O
,	O
and	O
Wi-Fi	O
Aware	O
.	O
</s>
<s>
Android	B-Application
Oreo	I-Application
also	O
introduces	O
two	O
major	O
platform	O
features	O
:	O
Android	B-Application
Go	I-Application
–	O
a	O
software	O
distribution	O
of	O
the	O
operating	O
system	O
for	O
low-end	O
devices	O
–	O
and	O
support	O
for	O
implementing	O
a	O
hardware	B-Operating_System
abstraction	I-Operating_System
layer	I-Operating_System
.	O
</s>
<s>
,	O
8.17	O
%	O
of	O
Android	B-Application
devices	O
ran	O
Android	B-Application
Oreo	I-Application
,	O
with	O
5.11	O
%	O
on	O
Android	B-Application
8.1	I-Application
(	O
API	B-General_Concept
27	O
)	O
and	O
2.06	O
%	O
on	O
Android	B-Application
8.0	I-Application
(	O
API	B-General_Concept
26	O
)	O
.	O
</s>
<s>
Android	B-Application
Oreo	I-Application
was	O
internally	O
codenamed	O
"	O
Oatmeal	O
Cookie.	O
"	O
</s>
<s>
On	O
March	O
21	O
,	O
2017	O
,	O
Google	B-Application
released	O
the	O
first	O
developer	O
preview	O
of	O
Android	B-Application
"	O
O	O
"	O
,	O
available	O
for	O
the	O
Nexus	B-Device
5X	I-Device
,	O
Nexus	B-Device
6P	I-Device
,	O
Nexus	B-Device
Player	I-Device
,	O
Pixel	B-Device
C	I-Device
,	O
and	O
both	O
Pixel	O
smartphones	O
.	O
</s>
<s>
The	O
third	O
developer	O
preview	O
was	O
released	O
on	O
June	O
8	O
,	O
2017	O
and	O
offered	O
a	O
finalized	O
version	O
of	O
the	O
API	B-General_Concept
.	O
</s>
<s>
DP3	O
finalized	O
the	O
release	O
's	O
API	B-General_Concept
to	O
API	B-General_Concept
level	O
26	O
,	O
changed	O
the	O
camera	O
UI	B-Application
,	O
reverted	O
the	O
Wi-Fi	O
and	O
cellular	O
connectivity	O
levels	O
in	O
the	O
status	O
bar	O
back	O
to	O
Wi-Fi	O
being	O
on	O
the	O
left	O
,	O
added	O
themed	O
notifications	O
,	O
added	O
a	O
battery	O
animation	O
in	O
Settings	O
:	O
Battery	O
,	O
a	O
new	O
icon	O
and	O
darker	O
background	O
for	O
the	O
Clock	O
app	O
,	O
and	O
a	O
teardrop	O
icon	O
shape	O
for	O
apps	O
.	O
</s>
<s>
Android	B-Application
"	O
O	O
"	O
was	O
officially	O
released	O
on	O
August	O
21	O
,	O
2017	O
under	O
the	O
name	O
"	O
Oreo	B-Application
"	O
.	O
</s>
<s>
Its	O
lawn	B-Application
statue	I-Application
was	O
unveiled	O
at	O
a	O
promotional	O
event	O
across	O
from	O
Chelsea	O
Market	O
in	O
New	O
York	O
City	O
—	O
a	O
building	O
which	O
formerly	O
housed	O
a	O
Nabisco	O
factory	O
where	O
Oreo	B-Application
cookies	O
were	O
first	O
produced	O
.	O
</s>
<s>
Factory	O
images	O
were	O
made	O
available	O
for	O
compatible	O
Pixel	O
and	O
Nexus	B-Device
devices	O
later	O
that	O
day	O
.	O
</s>
<s>
The	O
Sony	B-Application
Xperia	I-Application
XZ1	I-Application
and	O
Sony	B-Application
Xperia	I-Application
XZ1	I-Application
Compact	O
were	O
the	O
first	O
devices	O
available	O
with	O
Oreo	B-Application
pre-installed	O
.	O
</s>
<s>
Android	B-Application
8.1	I-Application
was	O
released	O
in	O
December	O
2017	O
for	O
Pixel	O
and	O
Nexus	B-Device
devices	O
,	O
which	O
features	O
minor	O
bug	O
fixes	O
and	O
user	B-Application
interface	I-Application
changes	O
.	O
</s>
<s>
The	O
Android	B-Application
8.1	I-Application
update	O
supports	O
the	O
display	O
of	O
battery	O
percentages	O
for	O
connected	O
Bluetooth	B-Protocol
devices	O
,	O
makes	O
the	O
notification	O
shade	O
slightly	O
translucent	O
,	O
and	O
dims	O
the	O
on-screen	O
navigation	O
keys	O
in	O
order	O
to	O
reduce	O
the	O
possibility	O
of	O
burn-in	B-General_Concept
.	O
</s>
<s>
AndroidOreo	O
adds	O
support	O
for	O
NeighborhoodAware	O
Networking	O
(	O
NAN	O
)	O
for	O
Wi-Fi	O
based	O
on	O
Wi-Fi	O
Aware	O
,	O
Bluetooth	B-Protocol
5	O
,	O
wide	O
color	O
gamuts	O
in	O
apps	O
,	O
an	O
API	B-General_Concept
for	O
autofillers	O
,	O
multiprocess	O
and	O
Google	B-Application
Browsing	I-Application
support	O
for	O
WebViews	O
,	O
an	O
API	B-General_Concept
to	O
allow	O
system-level	O
integration	O
for	O
VoIP	B-Application
apps	O
,	O
and	O
launching	O
activities	O
on	O
remote	O
displays	O
.	O
</s>
<s>
Android	B-Application
Runtime	I-Application
(	O
ART	O
)	O
features	O
performance	O
improvements	O
.	O
</s>
<s>
Android	B-Application
Oreo	I-Application
adds	O
native	O
support	O
for	O
Advanced	B-Application
Audio	I-Application
Coding	I-Application
,	O
aptX	B-Algorithm
,	O
aptX	B-Algorithm
HD	O
and	O
LDAC	B-Algorithm
Bluetooth	B-Protocol
codecs	O
.	O
</s>
<s>
AndroidOreo	O
supports	O
new	O
emoji	B-Application
that	O
were	O
included	O
in	O
the	O
Unicode	O
10	O
standard	O
.	O
</s>
<s>
A	O
new	O
emoji	B-Application
font	O
was	O
also	O
introduced	O
,	O
which	O
notably	O
redesigns	O
its	O
face	O
figures	O
to	O
use	O
a	O
traditional	O
circular	O
shape	O
,	O
as	O
opposed	O
to	O
the	O
"	O
blob	O
"	O
design	O
that	O
was	O
introduced	O
on	O
KitKat	B-Application
.	O
</s>
<s>
The	O
underlying	O
architecture	O
of	O
Android	B-Application
was	O
revised	O
so	O
that	O
low-level	O
,	O
vendor-specific	O
code	O
for	O
supporting	O
a	O
device	O
's	O
hardware	O
can	O
be	O
separated	O
from	O
the	O
Android	B-Application
OS	I-Application
framework	O
using	O
a	O
hardware	B-Operating_System
abstraction	I-Operating_System
layer	I-Operating_System
known	O
as	O
the	O
"	O
vendor	O
interface	O
"	O
.	O
</s>
<s>
Vendor	O
interfaces	O
must	O
be	O
made	O
forward	B-General_Concept
compatible	I-General_Concept
with	O
future	O
versions	O
of	O
Android	B-Application
.	O
</s>
<s>
This	O
new	O
architecture	O
,	O
called	O
Project	O
Treble	O
,	O
allows	O
the	O
quicker	O
development	O
and	O
deployment	O
of	O
Android	B-Application
updates	O
for	O
devices	O
,	O
as	O
vendors	O
would	O
only	O
need	O
to	O
make	O
the	O
necessary	O
modifications	O
to	O
their	O
bundled	O
software	O
.	O
</s>
<s>
All	O
devices	O
shipping	O
with	O
Oreo	B-Application
must	O
support	O
a	O
vendor	O
interface	O
,	O
but	O
this	O
feature	O
is	O
optional	O
for	O
devices	O
being	O
updated	O
to	O
Oreo	B-Application
from	O
an	O
earlier	O
version	O
.	O
</s>
<s>
The	O
"	O
seamless	O
updates	O
"	O
system	O
introduced	O
in	O
Android	B-Application
7.0	I-Application
was	O
also	O
modified	O
to	O
download	O
update	O
files	O
directly	O
to	O
the	O
system	O
partition	O
,	O
rather	O
than	O
requiring	O
them	O
to	O
be	O
downloaded	O
to	O
the	O
user	O
partition	O
first	O
.	O
</s>
<s>
The	O
Android	B-Application
8.1	I-Application
update	O
also	O
introduces	O
a	O
neural	B-Architecture
network	I-Architecture
API	B-General_Concept
,	O
which	O
is	O
designed	O
to	O
"[provide]	O
apps	O
with	O
hardware	O
acceleration	O
for	O
on-device	O
machine	O
learning	O
operations.	O
"	O
</s>
<s>
This	O
API	B-General_Concept
is	O
designed	O
for	O
use	O
with	O
machine	O
learning	O
platforms	O
such	O
as	O
TensorFlow	B-Language
Lite	O
,	O
and	O
specialized	O
co-processors	O
such	O
as	O
the	O
Pixel	B-Device
Visual	I-Device
Core	I-Device
(	O
featured	O
in	O
Google	B-Application
's	I-Application
Pixel	B-Device
2	I-Device
smartphones	O
,	O
but	O
dormant	O
until	O
8.1	O
is	O
installed	O
)	O
,	O
but	O
it	O
also	O
provides	O
a	O
CPU	B-General_Concept
fallback	O
mode	O
.	O
</s>
<s>
A	O
tailored	O
distribution	O
for	O
low-end	O
devices	O
known	O
as	O
Android	B-Application
Go	I-Application
was	O
unveiled	O
for	O
Oreo	B-Application
;	O
it	O
is	O
intended	O
for	O
devices	O
with	O
1GB	O
of	O
RAM	O
or	O
less	O
.	O
</s>
<s>
This	O
mode	O
has	O
platform	O
optimizations	O
designed	O
to	O
reduce	O
mobile	O
data	O
usage	O
(	O
including	O
enabling	O
Data	O
Saver	O
mode	O
by	O
default	O
)	O
,	O
and	O
a	O
special	O
suite	O
of	O
Google	B-Application
Mobile	I-Application
Services	I-Application
designed	O
to	O
be	O
less	O
resource	O
-	O
and	O
bandwidth-intensive	O
.	O
</s>
<s>
The	B-Application
Google	I-Application
Play	O
Store	O
would	O
also	O
highlight	O
lightweight	O
apps	O
suited	O
for	O
these	O
devices	O
.	O
</s>
<s>
The	O
operating	O
system	O
's	O
interface	O
is	O
also	O
modified	O
,	O
with	O
the	O
quick	O
settings	O
panel	O
providing	O
greater	O
prominence	O
to	O
information	O
regarding	O
the	O
battery	O
,	O
mobile	O
data	O
limit	O
,	O
and	O
available	O
storage	O
,	O
the	O
recent	O
apps	O
menu	O
using	O
a	O
modified	O
layout	O
and	O
being	O
limited	O
to	O
four	O
apps	O
(	O
in	O
order	O
to	O
reduce	O
RAM	O
consumption	O
)	O
,	O
and	O
an	O
API	B-General_Concept
for	O
allowing	O
mobile	O
carriers	O
to	O
implement	O
data	O
tracking	O
and	O
top-ups	O
within	O
the	O
Android	B-Application
settings	O
menu	O
.	O
</s>
<s>
Google	B-Application
Play	I-Application
Services	I-Application
was	O
also	O
modularized	O
to	O
reduce	O
its	O
memory	O
footprint	O
.	O
</s>
<s>
Android	B-Application
Go	I-Application
was	O
made	O
available	O
to	O
OEMs	O
for	O
Android	B-Application
8.1	I-Application
.	O
</s>
<s>
Android	B-Application
Oreo	I-Application
re-brands	O
multiple	O
security	O
features	O
provided	O
by	O
Google	B-Application
Play	I-Application
Services	I-Application
under	O
the	O
blanket	O
name	O
"	O
Google	B-Application
Play	I-Application
Protect	O
"	O
,	O
including	O
automatic	O
scanning	O
of	O
Google	B-Application
Play	I-Application
Store	I-Application
and	O
sideloaded	O
apps	O
,	O
and	O
Android	B-Application
Device	O
Manager	O
—	O
which	O
is	O
now	O
branded	O
as	O
"	O
Find	O
My	O
Device	O
"	O
.	O
</s>
<s>
As	O
opposed	O
to	O
a	O
single	O
,	O
system-wide	O
setting	O
for	O
enabling	O
the	O
installation	O
of	O
apps	O
from	O
sources	O
outside	O
of	O
the	B-Application
Google	I-Application
Play	O
Store	O
,	O
this	O
function	O
is	O
now	O
implemented	O
as	O
a	O
permission	O
that	O
can	O
be	O
granted	O
to	O
individual	O
apps	O
(	O
i.e.	O
</s>
<s>
clients	O
for	O
third-party	O
app	O
repositories	O
such	O
as	O
Amazon	O
Appstore	O
and	O
F-Droid	B-Application
)	O
.	O
</s>
<s>
A	O
verified	O
boot	O
now	O
includes	O
a	O
"	O
Rollback	O
Protection	O
"	O
feature	O
,	O
which	O
enforces	O
a	O
restriction	O
on	O
rolling	O
back	O
the	O
device	O
to	O
a	O
previous	O
version	O
of	O
Android	B-Application
,	O
aimed	O
at	O
preventing	O
a	O
potential	O
thief	O
from	O
bypassing	O
security	O
measures	O
by	O
installing	O
a	O
previous	O
version	O
of	O
the	O
operating	O
system	O
that	O
does	O
n't	O
have	O
them	O
in	O
place	O
.	O
</s>
