<s>
Android	B-Application
Froyo	I-Application
is	O
the	O
sixth	O
version	O
of	O
Android	B-Application
and	O
is	O
a	O
codename	O
of	O
the	O
Android	B-Application
mobile	I-Application
operating	I-Application
system	I-Application
developed	O
by	O
Google	B-Application
,	O
spanning	O
versions	O
between	O
2.2	O
and	O
2.2.3	O
.	O
</s>
<s>
It	O
was	O
unveiled	O
on	O
May	O
20	O
,	O
2010	O
,	O
during	O
the	B-Application
Google	I-Application
I/O	O
2010	O
conference	O
.	O
</s>
<s>
Google	B-Application
ceased	O
sign-in	O
support	O
with	O
a	O
Google	B-Application
account	O
for	O
Android	B-Application
Froyo	I-Application
to	O
Android	B-Application
Gingerbread	I-Application
on	O
September	O
27	O
,	O
2021	O
.	O
</s>
<s>
One	O
of	O
the	O
most	O
prominent	O
changes	O
in	O
the	O
Froyo	B-Application
release	O
was	O
USB	O
tethering	O
and	O
Wi-Fi	B-Application
hotspot	I-Application
functionality	O
.	O
</s>
<s>
Other	O
changes	O
include	O
support	O
for	O
the	O
Android	B-Application
Cloud	I-Application
to	I-Application
Device	I-Application
Messaging	I-Application
(	O
C2DM	B-Application
)	O
service	O
,	O
enabling	O
push	O
notifications	O
,	O
additional	O
application	O
speed	O
improvements	O
,	O
implemented	O
through	O
JIT	O
compilation	O
and	O
displayed	O
within	O
applications	O
as	O
top-of-the-screen	O
banners	O
.	O
</s>
<s>
New	O
features	O
introduced	O
by	O
Froyo	B-Application
include	O
the	O
following	O
:	O
</s>
<s>
Integration	O
of	O
Chrome	B-Application
's	O
V8	B-Language
JavaScript	I-Language
engine	I-Language
into	O
the	O
Browser	O
application	O
.	O
</s>
<s>
Support	O
for	O
the	O
Android	B-Application
Cloud	I-Application
to	I-Application
Device	I-Application
Messaging	I-Application
(	O
C2DM	B-Application
)	O
service	O
,	O
enabling	O
push	O
notifications	O
.	O
</s>
<s>
Improved	O
Microsoft	B-Operating_System
Exchange	I-Operating_System
support	O
,	O
including	O
security	O
policies	O
,	O
auto-discovery	O
,	O
GAL	O
look-up	O
,	O
calendar	O
synchronization	O
and	O
remote	O
wipe	O
.	O
</s>
<s>
USB	O
tethering	O
and	O
Wi-Fi	B-Application
hotspot	I-Application
functionality	O
.	O
</s>
<s>
Updated	O
Market	B-Application
application	O
with	O
batch	O
and	O
automatic	O
update	O
features	O
.	O
</s>
<s>
Support	O
for	O
Bluetooth-enabled	O
car	O
and	O
desk	O
docks	O
.	O
</s>
<s>
Adobe	B-Operating_System
Flash	I-Operating_System
support	O
.	O
</s>
<s>
Introduced	O
.asec	B-Application
file	O
extension	O
.	O
</s>
