<s>
This	O
is	O
a	O
list	O
of	O
features	O
in	O
the	O
Android	B-Application
operating	I-Application
system	I-Application
.	O
</s>
<s>
Messaging	B-Protocol
SMS	B-Device
and	O
MMS	O
are	O
available	O
forms	O
of	O
messaging	B-Protocol
,	O
including	O
threaded	O
text	O
messaging	B-Protocol
and	O
Android	B-Application
Cloud	O
To	O
Device	O
Messaging	B-Protocol
(	O
C2DM	O
)	O
and	O
now	O
enhanced	O
version	O
of	O
C2DM	O
,	O
Android	B-Application
Google	I-Application
Cloud	O
Messaging	B-Protocol
(	O
GCM	O
)	O
is	O
also	O
a	O
part	O
of	O
Android	B-Application
Push	O
Messaging	B-Protocol
services	O
.	O
</s>
<s>
Android	B-Application
phones	I-Application
also	O
have	O
the	O
ability	O
to	O
send	O
and	O
receive	O
RCS	O
via	O
the	O
messages	O
app	O
(	O
if	O
supported	O
by	O
the	O
carrier	O
)	O
.	O
</s>
<s>
Autocorrection	B-Protocol
and	O
Dictionary	O
Android	B-Application
has	O
an	O
feature	O
called	O
autocorrection	B-Protocol
.	O
</s>
<s>
When	O
any	O
word	O
is	O
misspelled	O
,	O
then	O
Android	B-Application
recommends	O
the	O
meaningful	O
and	O
correct	O
words	O
matching	O
the	O
words	O
that	O
are	O
available	O
in	O
dictionary	O
.	O
</s>
<s>
Web	O
browser	O
The	O
web	O
browser	O
available	O
in	O
Android	B-Application
is	I-Application
based	O
on	O
the	O
open-source	O
Blink	B-Language
(	O
previously	O
WebKit	B-Language
)	O
layout	O
engine	O
,	O
coupled	O
with	O
Chromium	B-Language
's	O
V8	B-Language
JavaScript	I-Language
engine	I-Language
.	O
</s>
<s>
Then	O
the	O
WebKit-using	O
Android	B-Application
Browser	O
scored	O
100/100	O
on	O
the	O
Acid3	O
test	O
on	O
Android	B-Application
4.0	I-Application
ICS	O
;	O
the	O
Blink-based	O
browser	O
currently	O
has	O
better	O
standards	O
support	O
.	O
</s>
<s>
The	O
old	O
web	O
browser	O
is	O
variably	O
known	O
as	O
'	O
Android	B-Application
Browser	O
 '	O
,	O
'	O
AOSP	O
browser	O
 '	O
,	O
'	O
stock	O
browser	O
 '	O
,	O
'	O
native	O
browser	O
 '	O
,	O
and	O
'	O
default	O
browser	O
 '	O
(	O
from	O
the	O
time	O
it	O
was	O
always	O
the	O
default	O
)	O
.	O
</s>
<s>
Starting	O
with	O
Android	B-Application
4.4	I-Application
KitKat	I-Application
,	O
Google	O
has	O
begun	O
licensing	O
Google	B-Application
Chrome	I-Application
(	O
a	O
proprietary	O
software	O
)	O
separately	O
from	O
Android	B-Application
,	O
but	O
usually	O
bundled	O
with	O
(	O
what	O
most	O
device	O
vendors	O
did	O
)	O
.	O
</s>
<s>
Since	O
Android	B-Application
5.0	I-Application
Lollipop	I-Application
,	O
the	O
WebView	O
browser	O
that	O
apps	O
can	O
use	O
to	O
display	O
web	O
content	O
without	O
leaving	O
the	O
app	O
has	O
been	O
separated	O
from	O
the	O
rest	O
of	O
the	O
Android	B-Application
firmware	O
in	O
order	O
to	O
facilitate	O
separate	O
security	O
updates	O
by	O
Google	O
.	O
</s>
<s>
are	O
supported	O
on	O
Android	B-Application
2.2	I-Application
onwards	O
.	O
</s>
<s>
As	O
of	O
Android	B-Application
4.1	I-Application
,	O
Google	O
has	O
expanded	O
Voice	O
Actions	O
with	O
ability	O
to	O
talk	O
back	O
and	O
read	O
answers	O
from	O
Google	O
's	O
Knowledge	B-Application
Graph	I-Application
when	O
queried	O
with	O
specific	O
commands	O
.	O
</s>
<s>
Multi-touch	B-Application
Android	B-Application
has	O
native	O
support	O
for	O
multi-touch	B-Application
which	O
was	O
initially	O
made	O
available	O
in	O
handsets	O
such	O
as	O
the	O
HTC	B-Application
Hero	I-Application
.	O
</s>
<s>
The	O
feature	O
was	O
originally	O
disabled	O
at	O
the	O
kernel	B-Operating_System
level	O
(	O
possibly	O
to	O
avoid	O
infringing	O
Apple	O
's	O
patents	O
on	O
touch-screen	B-Device
technology	O
at	O
the	O
time	O
)	O
.	O
</s>
<s>
Google	O
has	O
since	O
released	O
an	O
update	O
for	O
the	O
Nexus	B-Application
One	I-Application
and	O
the	O
Motorola	B-Application
Droid	I-Application
which	O
enables	O
multi-touch	B-Application
natively	O
.	O
</s>
<s>
Screen	O
capture	O
Android	B-Application
supports	O
capturing	O
a	O
screenshot	B-Application
by	O
pressing	O
the	O
power	O
and	O
home-screen	O
buttons	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
Prior	O
to	O
Android	B-Application
4.0	I-Application
,	O
the	O
only	O
methods	O
of	O
capturing	O
a	O
screenshot	B-Application
were	O
through	O
manufacturer	O
and	O
third-party	O
customizations	O
(	O
apps	O
)	O
,	O
or	O
otherwise	O
by	O
using	O
a	O
PC	O
connection	O
(	O
DDMS	O
developer	O
's	O
tool	O
)	O
.	O
</s>
<s>
These	O
alternative	O
methods	O
are	O
still	O
available	O
with	O
the	O
latest	O
Android	B-Application
.	O
</s>
<s>
Video	O
calling	O
Android	B-Application
does	O
not	O
support	O
native	O
video	O
calling	O
,	O
but	O
some	O
handsets	O
have	O
a	O
customized	O
version	O
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
that	O
supports	O
it	O
,	O
either	O
via	O
the	O
UMTS	B-Protocol
network	O
(	O
like	O
the	O
Samsung	B-Application
Galaxy	I-Application
S	I-Application
)	O
or	O
over	O
IP	O
.	O
</s>
<s>
Video	O
calling	O
through	O
Google	B-Application
Talk	I-Application
is	O
available	O
in	O
Android	B-Application
2.3.4	I-Application
(	O
Gingerbread	B-Application
)	O
and	O
later	O
.	O
</s>
<s>
Gingerbread	B-Application
allows	O
Nexus	B-Device
S	I-Device
to	O
place	O
Internet	B-Application
calls	I-Application
with	O
a	O
SIP	O
account	O
.	O
</s>
<s>
This	O
allows	O
for	O
enhanced	O
VoIP	B-Application
dialing	O
to	O
other	O
SIP	O
accounts	O
and	O
even	O
phone	O
numbers	O
.	O
</s>
<s>
Skype	O
2.1	O
offers	O
video	O
calling	O
in	O
Android	B-Application
2.3	I-Application
,	O
including	O
front	O
camera	O
support	O
.	O
</s>
<s>
Multiple	O
language	O
support	O
Android	B-Application
supports	O
multiple	O
languages	O
.	O
</s>
<s>
Connectivity	O
Android	B-Application
supports	O
connectivity	O
technologies	O
including	O
GSM/EDGE	O
,	O
Bluetooth	B-Protocol
,	O
LTE	O
,	O
CDMA	B-Protocol
,	O
EV-DO	O
,	O
UMTS	B-Protocol
,	O
NFC	O
,	O
THAILAND	O
and	O
WiMAX	O
.	O
</s>
<s>
Bluetooth	B-Protocol
Supports	O
voice	O
dialing	O
and	O
sending	O
contacts	O
between	O
phones	O
,	O
playing	O
music	O
,	O
sending	O
files	O
(	O
OPP	O
)	O
,	O
accessing	O
the	O
phone	O
book	O
(	O
PBAP	O
)	O
,	O
A2DP	O
and	O
AVRCP	O
.	O
</s>
<s>
Keyboard	O
,	O
mouse	O
and	O
joystick	O
(	O
HID	O
)	O
support	O
is	O
available	O
in	O
Android	B-Application
3.1	O
+	O
,	O
and	O
in	O
earlier	O
versions	O
through	O
manufacturer	O
customizations	O
and	O
third-party	O
applications	O
.	O
</s>
<s>
Tethering	O
Android	B-Application
supports	O
tethering	O
,	O
which	O
allows	O
a	O
phone	O
to	O
be	O
used	O
as	O
a	O
wireless/wired	O
Wi-Fi	B-Application
hotspot	I-Application
.	O
</s>
<s>
Before	O
Android	B-Application
2.2	I-Application
,	O
this	O
was	O
supported	O
by	O
third-party	O
applications	O
or	O
manufacturer	O
customizations	O
.	O
</s>
<s>
Apple	O
HTTP	O
Live	O
Streaming	O
is	O
supported	O
by	O
RealPlayer	O
for	O
Android	B-Application
,	O
and	O
by	O
the	O
operating	B-General_Concept
system	I-General_Concept
since	O
Android	B-Application
3.0	O
(	O
Honeycomb	O
)	O
.	O
</s>
<s>
Media	O
support	O
Android	B-Application
supports	O
the	O
following	O
audio/video/still	O
media	O
formats	O
:	O
WebM	B-Application
,	O
H.263	B-Algorithm
,	O
H.264	B-Application
,	O
AAC	B-Application
,	O
HE-AAC	O
(	O
in	O
3GP	O
or	O
MP4	O
container	O
)	O
,	O
MPEG-4	B-Application
SP	I-Application
,	O
AMR	B-Algorithm
,	O
AMR-WB	B-Algorithm
(	O
in	O
3GP	O
container	O
)	O
,	O
MP3	B-Application
,	O
MIDI	O
,	O
Ogg	B-Algorithm
Vorbis	I-Algorithm
,	O
FLAC	B-Application
,	O
WAV	O
,	O
JPEG	O
,	O
PNG	O
,	O
GIF	O
,	O
BMP	B-Device
,	O
and	O
WebP	O
.	O
</s>
<s>
External	O
storage	O
Most	O
Android	B-Application
devices	O
include	O
microSD	O
card	O
slots	O
and	O
can	O
read	O
microSD	O
cards	O
formatted	O
with	O
the	O
FAT32	B-Application
,	O
Ext3	B-Application
or	O
Ext4	B-Application
file	O
systems	O
.	O
</s>
<s>
To	O
allow	O
use	O
of	O
external	O
storage	O
media	O
such	O
as	O
USB	O
flash	O
drives	O
and	O
USB	B-Device
HDDs	I-Device
,	O
some	O
Android	B-Application
devices	O
are	O
packaged	O
with	O
USB-OTG	O
cables	O
.	O
</s>
<s>
Storage	O
formatted	O
with	O
FAT32	B-Application
is	O
handled	O
by	O
the	O
Linux	B-Operating_System
Kernel	I-Operating_System
vFAT	O
driver	O
,	O
while	O
3rd	O
party	O
solutions	O
are	O
required	O
to	O
handle	O
some	O
other	O
file	O
systems	O
such	O
as	O
NTFS	B-Application
,	O
HFS	B-Application
Plus	I-Application
and	O
exFAT	B-Application
.	O
</s>
<s>
Android	B-Application
devices	O
can	O
include	O
still/video	O
cameras	O
,	O
touchscreens	B-Device
,	O
GPS	O
,	O
accelerometers	O
,	O
gyroscopes	B-Application
,	O
barometers	O
,	O
magnetometers	O
,	O
dedicated	O
gaming	O
controls	O
,	O
proximity	B-Device
and	O
pressure	O
sensors	O
,	O
thermometers	O
,	O
accelerated	O
2D	O
bit	B-Algorithm
blits	I-Algorithm
(	O
with	O
hardware	O
orientation	O
,	O
scaling	O
,	O
pixel	O
format	O
conversion	O
)	O
and	O
accelerated	O
3D	O
graphics	O
.	O
</s>
<s>
Java	B-Language
support	O
While	O
most	O
Android	B-Application
applications	I-Application
are	O
written	O
in	O
Java	B-Language
,	O
there	O
is	O
no	O
Java	B-Language
virtual	I-Language
machine	I-Language
in	O
the	O
platform	O
and	O
Java	B-Language
byte	O
code	O
is	O
not	O
executed	O
.	O
</s>
<s>
Java	B-Language
classes	O
are	O
compiled	O
into	O
Dalvik	B-Application
executables	O
and	O
run	O
on	O
using	O
Android	B-Application
Runtime	I-Application
or	O
in	O
Dalvik	B-Application
in	O
older	O
versions	O
,	O
a	O
specialized	O
virtual	O
machine	O
designed	O
specifically	O
for	O
Android	B-Application
and	O
optimized	O
for	O
battery-powered	O
mobile	O
devices	O
with	O
limited	O
memory	O
and	O
CPU	O
.	O
</s>
<s>
J2ME	B-Language
support	O
can	O
be	O
provided	O
via	O
third-party	O
applications	O
.	O
</s>
<s>
through	O
HDMI	B-Protocol
,	O
or	O
wirelessly	O
with	O
Miracast	O
.	O
</s>
<s>
A	O
2D	O
graphics	O
library	O
,	O
3D	O
graphics	O
library	O
based	O
on	O
OpenGL	B-Application
ES	I-Application
2.0	O
specifications	O
is	O
used	O
.	O
</s>
<s>
Storage	O
SQLite	B-Language
,	O
a	O
lightweight	O
relational	B-Application
database	I-Application
,	O
is	O
used	O
for	O
data	O
storage	O
purposes	O
.	O
</s>
<s>
Native	O
Apps	O
Android	B-Application
apps	O
are	O
also	O
written	O
in	O
HTML	O
.	O
</s>
<s>
Instant	O
Apps	O
Android	B-Application
apps	O
are	O
hosted	O
on	O
a	O
specific	O
website	O
path	O
and	O
load	O
instead	O
of	O
the	O
website	O
itself	O
.	O
</s>
