<s>
This	O
page	O
provides	O
details	O
for	O
the	O
version	O
history	O
of	O
the	O
Microsoft	O
's	O
Windows	B-Protocol
Phone	I-Protocol
branded	O
mobile	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
,	O
from	O
the	O
release	O
of	O
Windows	B-Protocol
Phone	I-Protocol
7	O
in	O
October	O
2010	O
,	O
which	O
was	O
preceded	O
by	O
Windows	O
Mobile	O
version	O
6.x	O
.	O
</s>
<s>
Windows	B-Protocol
Phone	I-Protocol
7	O
was	O
the	O
first	O
release	O
of	O
the	O
Windows	B-Protocol
Phone	I-Protocol
mobile	O
client	O
operating	O
system	O
,	O
released	O
worldwide	O
on	O
October	O
21	O
,	O
2010	O
,	O
and	O
in	O
the	O
United	O
States	O
on	O
November	O
8	O
,	O
2010	O
.	O
</s>
<s>
At	O
the	O
2011	O
Mobile	O
World	O
Congress	O
,	O
Steve	O
Ballmer	O
announced	O
a	O
major	O
update	O
to	O
Windows	B-Protocol
Phone	I-Protocol
7	O
due	O
toward	O
the	O
end	O
of	O
the	O
year	O
,	O
Windows	B-Protocol
Phone	I-Protocol
7.5	O
,	O
codenamed	O
Mango	O
.	O
</s>
<s>
The	O
new	O
OS	O
would	O
address	O
many	O
of	O
the	O
platform	O
's	O
shortcomings	O
,	O
including	O
a	O
mobile	O
version	O
of	O
Internet	B-Application
Explorer	I-Application
9	I-Application
that	O
supports	O
the	O
same	O
web	O
standards	O
and	O
graphical	O
capability	O
as	O
the	O
desktop	O
version	O
,	O
multi-tasking	B-Operating_System
of	O
third-party	O
apps	O
,	O
Twitter	O
integration	O
for	O
the	O
People	O
Hub	O
,	O
and	O
Windows	B-Application
Live	I-Application
SkyDrive	I-Application
access	O
.	O
</s>
<s>
Microsoft	O
started	O
rolling	O
out	O
Windows	B-Protocol
Phone	I-Protocol
7.5	O
to	O
both	O
the	O
United	O
States	O
and	O
International	O
markets	O
on	O
September	O
27	O
,	O
2011	O
.	O
</s>
<s>
The	O
first	O
phones	O
that	O
came	O
pre-loaded	O
with	O
Windows	B-Protocol
Phone	I-Protocol
7.5	O
were	O
released	O
in	O
the	O
last	O
quarter	O
of	O
2011	O
.	O
</s>
<s>
A	O
minor	O
update	O
released	O
in	O
2012	O
known	O
as	O
Tango	O
,	O
along	O
with	O
other	O
bug	O
fixes	O
,	O
would	O
also	O
lower	O
the	O
hardware	O
requirements	O
to	O
allow	O
for	O
devices	O
with	O
800MHz	O
CPUs	O
and	O
256	O
MB	O
of	O
RAM	B-Architecture
to	O
run	O
Windows	B-Protocol
Phone	I-Protocol
.	O
</s>
<s>
Certain	O
resource-intensive	O
features	O
are	O
also	O
disabled	O
on	O
these	O
phones	O
,	O
and	O
the	O
Windows	B-Protocol
Phone	I-Protocol
Store	O
will	O
also	O
prevent	O
the	O
installation	O
of	O
apps	O
that	O
are	O
considered	O
to	O
be	O
too	O
intensive	O
for	O
use	O
on	O
weaker	O
hardware	O
.	O
</s>
<s>
Outlook	B-Application
tasks	O
support	O
.	O
</s>
<s>
Bing	B-Application
Vision	O
:	O
barcode	O
,	O
covers	O
,	O
posters	O
,	O
products	O
scanning	O
,	O
and	O
OCR	O
text	O
translation	O
.	O
</s>
<s>
Bing	B-Application
Audio	O
/	O
Music	O
:	O
Shazam-like	O
audio	O
recognition	O
.	O
</s>
<s>
Bing	B-Application
Local	I-Application
Scout	O
:	O
"	O
around	O
me	O
"	O
business	O
and	O
POI	O
locator	O
.	O
</s>
<s>
Bing	B-Application
Quick	O
Cards	O
:	O
product/media	O
information	O
,	O
reviews	O
.	O
</s>
<s>
Bing	B-Application
Search	I-Application
:	O
indoor	O
maps	O
(	O
US	O
only	O
)	O
,	O
image	O
search	O
results	O
,	O
third-party	O
app	O
integration	O
.	O
</s>
<s>
Bing	B-Application
Maps	O
:	O
turn-by-turn	O
navigation	O
,	O
voice	O
guidance	O
.	O
</s>
<s>
Skydrive	B-Application
and	O
Office	O
365	O
documents	O
sync	O
(	O
PDF	O
also	O
supported	O
)	O
.	O
</s>
<s>
People	O
/	O
Groups	O
gallery	O
with	O
Skydrive	B-Application
and	O
Facebook	O
sync	O
.	O
</s>
<s>
People	O
tagging	O
in	O
the	O
photos	O
with	O
Skydrive	B-Application
and	O
Facebook	O
sync	O
.	O
</s>
<s>
Video	O
sharing	O
via	O
MMS	O
,	O
Facebook	O
,	O
Skydrive	B-Application
,	O
and	O
email	O
.	O
</s>
<s>
When	O
you	O
choose	O
a	O
photo	O
from	O
within	O
an	O
app	O
,	O
you	O
can	O
now	O
pick	O
from	O
online	O
albums	O
on	O
Facebook	O
or	O
SkyDrive	B-Application
,	O
not	O
just	O
pictures	O
saved	O
on	O
your	O
phone	O
.	O
</s>
<s>
Zune	B-Library
SmartDJ	O
mix	O
support	O
.	O
</s>
<s>
Support	O
for	O
HTML5	B-Application
audio	O
and	O
video	O
playback	O
.	O
</s>
<s>
Background	O
HTML5	B-Application
audio	O
playback	O
.	O
</s>
<s>
Third-party	O
application	O
multi-tasking	B-Operating_System
and	O
fast	O
application	O
switching	O
.	O
</s>
<s>
App	O
Connect	O
:	O
third-party	O
applications	O
can	O
integrate	O
with	O
Bing	B-Application
search	I-Application
,	O
have	O
multiple	O
live	O
tiles	O
,	O
and	O
can	O
have	O
push	O
notifications	O
that	O
link	O
deep	O
(	O
"	O
Deep	O
Toast	O
"	O
)	O
into	O
various	O
parts	O
of	O
the	O
application	O
directly	O
.	O
</s>
<s>
Improved	O
WebBrowser	O
control	O
with	O
IE9	B-Application
rendering	O
engine	O
and	O
system-wide	O
cookies	O
access	O
.	O
</s>
<s>
Support	O
for	O
low-cost	O
devices	O
with	O
256	O
MB	O
RAM	B-Architecture
and	O
low	O
clock	O
CPU	O
.	O
</s>
<s>
The	O
Nokia	B-Application
Lumia	I-Application
610	I-Application
and	O
ZTE	O
Orbit	O
,	O
introduced	O
at	O
Mobile	O
World	O
Congress	O
in	O
2012	O
,	O
are	O
the	O
first	O
phones	O
to	O
run	O
the	O
Tango	O
update	O
.	O
</s>
<s>
7.10.8783.12	O
Provides	O
other	O
Windows	B-Protocol
Phone	I-Protocol
improvements	O
.	O
</s>
<s>
Windows	B-Protocol
Phone	I-Protocol
7.8	O
is	O
the	O
final	O
major	O
release	O
of	O
Windows	B-Protocol
Phone	I-Protocol
7	O
.	O
</s>
<s>
It	O
consists	O
exclusively	O
of	O
user	O
interface	O
improvements	O
backported	O
from	O
Windows	B-Protocol
Phone	I-Protocol
8	O
,	O
as	O
existing	O
Windows	B-Protocol
Phone	I-Protocol
7	O
devices	O
can	O
not	O
be	O
upgraded	O
to	O
due	O
to	O
changes	O
to	O
its	O
architecture	O
and	O
hardware	O
requirements	O
.	O
</s>
<s>
These	O
include	O
a	O
home	O
screen	O
with	O
the	O
ability	O
to	O
resize	O
live	O
tiles	O
,	O
new	O
accent	O
color	O
options	O
,	O
and	O
an	O
updated	O
lock	O
screen	O
with	O
support	O
for	O
Bing	B-Application
wallpapers	O
.	O
</s>
<s>
Unlike	O
Windows	B-Protocol
Phone	I-Protocol
8	O
,	O
the	O
lock	O
screen	O
does	O
not	O
allow	O
third-party	O
apps	O
to	O
display	O
notifications	O
on	O
it	O
.	O
</s>
<s>
On	O
October	O
14	O
,	O
2013	O
,	O
Microsoft	O
released	O
the	O
third	O
General	O
Distribution	O
Release	O
update	O
for	O
Windows	B-Protocol
Phone	I-Protocol
8	O
,	O
which	O
would	O
roll	O
out	O
to	O
phones	O
over	O
the	O
following	O
months	O
.	O
</s>
<s>
Windows	B-Protocol
Phone	I-Protocol
Developers	O
were	O
among	O
the	O
first	O
to	O
receive	O
the	O
update	O
under	O
a	O
new	O
Developer	O
Preview	O
Program	O
.	O
</s>
<s>
Windows	B-Protocol
Phone	I-Protocol
8	O
now	O
supports	O
the	O
CardDAV	O
and	O
CalDAV	O
protocols	O
that	O
allow	O
people	O
to	O
sync	O
Google	O
contacts	O
and	O
calendar	O
information	O
when	O
they	O
get	O
new	O
phones	O
.	O
</s>
<s>
Xbox	B-Application
Music	I-Application
.	O
</s>
<s>
Better	O
browsing	O
experience	O
with	O
improved	O
HTML	B-Application
5	I-Application
compatibility	O
.	O
</s>
<s>
Includes	O
many	O
other	O
improvements	O
to	O
Windows	B-Protocol
Phone	I-Protocol
.	O
</s>
<s>
General	O
Distribution	O
Release	O
1	O
(	O
GDR1	O
;	O
also	O
referred	O
to	O
as	O
Update	O
1	O
)	O
adds	O
new	O
language	O
and	O
region	O
support	O
for	O
Cortana	B-Application
,	O
the	O
option	O
to	O
organize	O
apps	O
into	O
folders	O
on	O
the	O
Start	O
Screen	O
,	O
SMS	O
forwarding	O
of	O
multiple	O
messages	O
,	O
improvements	O
to	O
Xbox	B-Application
Music	I-Application
,	O
a	O
live	O
tile	O
for	O
the	O
Windows	B-Protocol
Phone	I-Protocol
Store	O
and	O
an	O
option	O
for	O
sandboxing	O
applications	O
.	O
</s>
<s>
In	O
addition	O
,	O
Update	O
1/GDR1	O
also	O
includes	O
new	O
VPN	B-Application
and	O
Bluetooth	O
features	O
for	O
enterprise	O
users	O
,	O
as	O
well	O
as	O
support	O
for	O
interactive	O
cases	O
such	O
as	O
HTC	O
's	O
"	O
Dot	O
View	O
"	O
case	O
,	O
larger	O
"	O
phablet	O
"	O
screen	O
resolutions	O
such	O
as	O
1280x800	O
,	O
540x960	O
qHD	O
and	O
1280x768	O
and	O
the	O
Qualcomm	O
QuickCharge	O
2.0	O
standard	O
.	O
</s>
<s>
Microsoft	O
has	O
made	O
several	O
changes	O
to	O
Internet	O
Explorer	O
Mobile	O
that	O
brings	O
the	O
browser	O
experience	O
closer	O
in	O
line	O
with	O
the	O
experiences	O
on	O
Safari	B-Application
(	O
iOS	B-Operating_System
)	O
and	O
Chrome	B-Application
(	O
Android	B-Application
)	O
.	O
</s>
<s>
To	O
accomplish	O
this	O
,	O
Microsoft	O
moved	O
away	O
from	O
open	O
standards	O
and	O
adopted	O
non-standard	O
features	O
used	O
in	O
Safari	B-Application
and	O
Chrome	B-Application
,	O
implemented	O
browser	O
detection	O
,	O
improved	O
page	O
rendering	O
by	O
detecting	O
legacy	O
WebKit	O
features	O
,	O
brought	O
support	O
for	O
HTML5	B-Application
,	O
and	O
fixed	O
interoperability	O
issues	O
with	O
bad	O
HTML	O
code	O
.	O
</s>
<s>
An	O
example	O
for	O
the	O
comparison	O
of	O
the	O
changes	O
made	O
to	O
the	O
user-agent	B-Protocol
string	I-Protocol
in	O
Update	O
1/GDR1	O
in	O
order	O
to	O
overcome	O
erroneous	O
methods	O
of	O
browser	O
detection	O
and	O
correctly	O
deliver	O
mobile	O
content	O
to	O
Internet	O
Explorer	O
Mobile	O
.	O
</s>
<s>
Information	O
regarding	O
GDR2	O
(	O
also	O
referred	O
to	O
as	O
Update	O
2	O
)	O
was	O
released	O
in	O
February	O
2015	O
it	O
was	O
revealed	O
that	O
Microsoft	O
was	O
working	O
on	O
a	O
2nd	O
update	O
for	O
Windows	B-Protocol
Phone	I-Protocol
8.1	B-Device
that	O
would	O
provide	O
increased	O
security	O
for	O
OEM	O
's	O
,	O
add	O
extra	O
languages	O
and	O
additional	O
technology	O
support	O
and	O
is	O
also	O
reported	O
to	O
bring	O
an	O
anti-theft	O
mode	O
.	O
</s>
<s>
Updated	O
camera	O
app	O
,	O
similar	O
to	O
Windows	B-Device
8.1	I-Device
,	O
with	O
burst	O
mode	O
.	O
</s>
<s>
Improved	O
Xbox	B-Application
music	I-Application
app	O
and	O
live	O
tile	O
support	O
.	O
</s>
<s>
Add	O
phone	O
book	O
entry	O
for	O
Cortana	B-Application
to	O
allow	O
users	O
to	O
initiate	O
speech	O
from	O
a	O
car	O
that	O
does	O
n't	O
have	O
support	O
for	O
activating	O
speech	O
on	O
the	O
phone	O
that	O
is	O
connected	O
over	O
Bluetooth	O
.	O
</s>
<s>
Network	O
Time	O
Protocol	O
support	O
;	O
automatically	O
set	O
the	O
time	O
using	O
an	O
NTP	O
client	O
in	O
a	O
Windows	B-Protocol
Phone	I-Protocol
device	O
that	O
does	O
n't	O
support	O
NITZ	O
or	O
when	O
cellular	O
data	O
is	O
not	O
available	O
.	O
</s>
<s>
Fixes	O
an	O
Access	O
Violation	O
in	O
"	O
minuser	O
"	O
component	O
which	O
caused	O
WinRT	O
apps	O
and	O
WebViews	O
to	O
crash	O
if	O
scrolled	O
by	O
the	O
user	O
while	O
(	O
or	O
2	O
–	O
15	O
seconds	O
after	O
)	O
loading	O
,	O
which	O
was	O
a	O
regression	O
introduced	O
in	O
the	O
8.1	B-Device
Update	O
1	O
release	O
(	O
8.10.14147.180	O
)	O
.	O
</s>
<s>
Made	O
NTP	O
time	O
sync	O
support	O
enabled	O
by	O
default	O
for	O
CV	O
devices	O
(	O
instead	O
of	O
rely	O
on	O
OEM	O
to	O
enable	O
it	O
)	O
8.10.14219.341	O
December	O
5	O
,	O
2014New	O
country	O
support	O
for	O
Cortana	B-Application
;	O
Spain	O
,	O
France	O
,	O
Germany	O
and	O
Italy	O
(	O
alpha	O
)	O
.	O
</s>
<s>
Windows	O
10	O
Mobile	O
was	O
announced	O
on	O
January	O
21	O
,	O
2015	O
,	O
as	O
a	O
mobile	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
for	O
smartphones	O
and	O
tablets	O
with	O
screens	O
smaller	O
than	O
8	O
inches	O
,	O
with	O
the	O
first	O
build	O
released	O
on	O
February	O
12	O
,	O
2015	O
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
to	O
Windows	B-Protocol
Phone	I-Protocol
8.1	B-Device
and	O
replaced	O
the	O
Windows	B-Protocol
Phone	I-Protocol
brand	O
,	O
while	O
Microsoft	O
has	O
since	O
ceased	O
active	O
development	O
of	O
Windows	O
10	O
Mobile	O
.	O
</s>
<s>
Windows	B-Protocol
Phone	I-Protocol
8.1	B-Device
devices	O
were	O
eligible	O
for	O
upgrade	O
to	O
Windows	O
10	O
,	O
pursuant	O
of	O
manufacturer	O
and	O
carrier	O
support	O
.	O
</s>
