<s>
Windows	B-Device
Mobile	I-Device
6.1	I-Device
was	O
a	O
version	O
of	O
the	O
Windows	B-Operating_System
Mobile	I-Operating_System
operating	O
system	O
,	O
released	O
on	O
April	O
1	O
,	O
2008	O
.	O
</s>
<s>
It	O
is	O
a	O
minor	O
upgrade	O
to	O
the	O
Windows	B-Operating_System
Mobile	I-Operating_System
6	I-Operating_System
platform	O
with	O
various	O
performance	O
enhancements	O
and	O
a	O
redesigned	O
Home	O
screen	O
featuring	O
horizontal	O
tiles	O
that	O
expand	O
on	O
clicking	O
to	O
display	O
more	O
information	O
,	O
although	O
this	O
new	O
home	O
screen	O
is	O
featured	O
only	O
on	O
Windows	B-Operating_System
Mobile	I-Operating_System
Standard	O
edition	O
.	O
</s>
<s>
Several	O
other	O
changes	O
such	O
as	O
threaded	O
SMS	O
,	O
full	O
page	O
zooming	B-Application
in	O
Internet	B-Application
Explorer	I-Application
and	O
'	O
Domain	O
Enroll	O
 '	O
were	O
also	O
added	O
,	O
along	O
with	O
a	O
"	O
mobile	O
"	O
version	O
of	O
the	O
Microsoft	B-Application
OneNote	I-Application
program	O
and	O
an	O
interactive	O
"	O
Getting	O
Started	O
"	O
wizard	O
.	O
</s>
<s>
Domain	O
Enroll	O
is	O
functionality	O
to	O
connect	O
the	O
device	O
to	O
System	B-Operating_System
Center	I-Operating_System
Mobile	I-Operating_System
Device	I-Operating_System
Manager	I-Operating_System
2008	O
,	O
a	O
product	O
to	O
manage	O
mobile	O
devices	O
.	O
</s>
<s>
The	O
most	O
apparent	O
of	O
the	O
other	O
differences	O
is	O
that	O
the	O
Standard	O
version	O
(	O
like	O
prior	O
versions	O
)	O
still	O
creates	O
automatic	O
links	O
for	O
telephone	O
numbers	O
in	O
Tasks	O
and	O
Appointments	O
,	O
which	O
allows	O
for	O
the	O
easier	O
click	O
and	O
dial	O
of	O
stored	O
telephone	O
numbers	O
within	O
these	O
Outlook	B-Application
items	O
.	O
</s>
<s>
Windows	B-Device
Mobile	I-Device
6.1	I-Device
also	O
had	O
improved	O
bandwidth	O
efficiency	O
in	O
its	O
push-email	O
protocol	O
"	O
Activesync	O
"	O
of	O
"	O
up	O
to	O
40.02	O
%	O
"	O
;	O
this	O
considerably	O
improved	O
battery	O
life	O
in	O
many	O
devices	O
.	O
</s>
<s>
The	O
version	O
of	O
Windows	B-Operating_System
CE	I-Operating_System
in	O
WM	O
6.0	O
is	O
5.2	O
.	O
</s>
