<s>
Microsoft	B-Device
Lumia	I-Device
(	O
previously	O
the	O
Nokia	B-Device
Lumia	I-Device
)	O
is	O
a	O
discontinued	O
line	O
of	O
mobile	B-Application
devices	I-Application
that	O
was	O
originally	O
designed	O
and	O
marketed	O
by	O
Nokia	O
and	O
later	O
by	O
Microsoft	O
Mobile	O
.	O
</s>
<s>
Introduced	O
in	O
November	O
2011	O
,	O
the	O
line	O
was	O
the	O
result	O
of	O
a	O
long-term	O
partnership	O
between	O
Nokia	O
and	O
Microsoft	O
—	O
as	O
such	O
,	O
Lumia	O
smartphones	B-Application
run	O
on	O
Microsoft	O
software	O
,	O
the	O
Windows	B-Protocol
Phone	I-Protocol
operating	O
system	O
;	O
and	O
later	O
the	O
newer	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
.	O
</s>
<s>
On	O
3	O
September	O
2013	O
,	O
Microsoft	O
announced	O
its	O
purchase	O
of	O
Nokia	O
's	O
mobile	B-Application
device	I-Application
business	O
,	O
with	O
the	O
deal	O
closing	O
on	O
25	O
April	O
2014	O
.	O
</s>
<s>
As	O
part	O
of	O
the	O
transition	O
,	O
Microsoft	O
continued	O
to	O
use	O
the	O
Nokia	O
brand	O
on	O
Lumia	O
devices	O
until	O
October	O
2014	O
,	O
when	O
it	O
began	O
to	O
officially	O
phase	O
out	O
the	O
Nokia	O
name	O
in	O
its	O
promotion	O
and	O
production	O
of	O
smartphones	B-Application
in	O
favor	O
of	O
Microsoft	O
branding	O
.	O
</s>
<s>
In	O
November	O
2014	O
,	O
Microsoft	O
announced	O
the	O
first	O
Microsoft	O
(	O
non-Nokia	O
)	O
branded	O
Lumia	O
device	O
,	O
the	O
Lumia	B-Application
535	I-Application
.	O
</s>
<s>
In	O
October	O
2015	O
,	O
Microsoft	O
announced	O
the	O
first	O
Lumia	O
devices	O
running	O
on	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
,	O
the	O
Lumia	B-Application
950	I-Application
,	O
Lumia	B-Device
950	I-Device
XL	I-Device
and	O
Lumia	B-Device
550	I-Device
.	O
</s>
<s>
The	O
most	O
recent	O
Lumia	O
smartphone	B-Application
,	O
the	O
Lumia	B-Application
650	I-Application
,	O
was	O
announced	O
by	O
Microsoft	O
on	O
15	O
February	O
2016	O
.	O
</s>
<s>
Sales	O
decreased	O
sharply	O
after	O
the	O
introduction	O
of	O
Windows	B-Operating_System
10	I-Operating_System
in	O
2015	O
and	O
Microsoft	O
briefly	O
stopped	O
selling	O
Lumia	O
devices	O
from	O
the	B-Application
Microsoft	I-Application
Store	I-Application
at	O
the	O
end	O
of	O
2016	O
—	O
by	O
which	O
time	O
sales	O
were	O
estimated	O
to	O
have	O
dropped	O
below	O
one	O
million	O
units	O
—	O
although	O
availability	O
was	O
restored	O
at	O
the	O
beginning	O
of	O
2017	O
.	O
</s>
<s>
In	O
October	O
2017	O
,	O
Microsoft	O
's	O
corporate	O
vice	O
president	O
,	O
Joe	O
Belfiore	O
,	O
confirmed	O
that	O
Microsoft	O
would	O
no	O
longer	O
sell	O
or	O
manufacture	O
new	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
devices	O
.	O
</s>
<s>
From	O
1998	O
to	O
2012	O
,	O
Nokia	O
was	O
the	O
largest	O
vendor	O
of	O
mobile	O
phones	O
in	O
the	O
world	O
,	O
which	O
included	O
early	O
smartphones	B-Application
built	O
on	O
its	O
Symbian	B-Operating_System
platform	I-Operating_System
.	O
</s>
<s>
However	O
,	O
in	O
recent	O
years	O
,	O
its	O
market	O
share	O
declined	O
as	O
a	O
result	O
of	O
the	O
growing	O
use	O
of	O
touchscreen	B-Device
smartphones	B-Application
from	O
other	O
vendors	O
,	O
such	O
as	O
Apple	O
's	O
iPhone	B-Device
line	O
and	O
Android-based	O
products	O
.	O
</s>
<s>
In	O
2010	O
,	O
its	O
market	O
share	O
had	O
declined	O
to	O
28%	O
,	O
and	O
in	O
April	O
2012	O
,	O
Samsung	O
Electronics	O
(	O
a	O
prominent	O
user	O
of	O
Android	B-Application
)	O
ultimately	O
overtook	O
Nokia	O
as	O
the	O
largest	O
mobile	O
phone	O
vendor	O
in	O
the	O
world	O
.	O
</s>
<s>
Nokia	O
's	O
CEO	O
Stephen	O
Elop	O
vetoed	O
the	O
idea	O
of	O
producing	O
Android	B-Application
devices	O
,	O
believing	O
the	O
company	O
would	O
n't	O
be	O
able	O
to	O
suitably	O
differentiate	O
its	O
Android	B-Application
products	O
from	O
that	O
of	O
other	O
vendors	O
.	O
</s>
<s>
In	O
an	O
employee	O
memo	O
,	O
Elop	O
infamously	O
described	O
the	O
company	O
as	O
being	O
on	O
a	O
"	O
burning	O
platform	O
"	O
,	O
blaming	O
the	O
"	O
war	O
of	O
ecosystems	B-Application
"	O
between	O
iOS	B-Application
and	O
Android	B-Application
as	O
part	O
of	O
Nokia	O
's	O
overall	O
struggle	O
,	O
and	O
asserting	O
that	O
the	O
company	O
needed	O
to	O
make	O
major	O
changes	O
to	O
its	O
operation	O
.	O
</s>
<s>
In	O
February	O
2011	O
,	O
Stephen	O
Elop	O
and	O
Microsoft	O
's	O
CEO	O
Steve	O
Ballmer	O
jointly	O
announced	O
a	O
major	O
business	O
partnership	O
between	O
Nokia	O
and	O
Microsoft	O
,	O
which	O
would	O
see	O
Nokia	O
adopt	O
Windows	B-Protocol
Phone	I-Protocol
as	O
its	O
primary	O
platform	O
on	O
future	O
smartphones	B-Application
,	O
replacing	O
both	O
Symbian	B-Operating_System
and	O
MeeGo	B-Operating_System
.	O
</s>
<s>
The	O
deal	O
also	O
included	O
the	O
integration	O
of	O
Bing	B-Application
as	O
the	O
search	B-Application
engine	I-Application
on	O
Nokia	O
devices	O
,	O
and	O
the	O
integration	O
of	O
Nokia	B-Application
Maps	I-Application
into	O
Microsoft	O
's	O
own	O
mapping	B-Application
services	I-Application
.	O
</s>
<s>
Nokia	O
had	O
planned	O
to	O
use	O
the	O
MeeGo	B-Operating_System
platform	O
as	O
part	O
of	O
its	O
future	O
plans	O
prior	O
to	O
the	O
announcement	O
,	O
although	O
the	O
company	O
announced	O
that	O
it	O
would	O
still	O
release	O
one	B-Operating_System
MeeGo	I-Operating_System
device	I-Operating_System
in	O
2011	O
.	O
</s>
<s>
Nokia	O
unveiled	O
its	O
first	O
Windows	B-Protocol
Phone	I-Protocol
7-based	O
devices	O
,	O
the	O
mid-range	O
Lumia	B-Application
710	I-Application
and	O
high-end	O
Lumia	B-Application
800	I-Application
,	O
on	O
26	O
October	O
2011	O
at	O
its	O
Nokia	O
World	O
conference	O
.	O
</s>
<s>
Motivated	O
by	O
requests	O
from	O
the	O
U.S.	O
carrier	O
AT&T	O
for	O
an	O
LTE-enabled	O
device	O
,	O
Nokia	O
quickly	O
developed	O
the	O
Lumia	B-Device
900	I-Device
as	O
a	O
follow-up	O
,	O
first	O
unveiled	O
at	O
the	O
2012	O
International	O
CES	O
.	O
</s>
<s>
The	O
Lumia	B-Device
900	I-Device
received	O
heavy	O
promotion	O
by	O
the	O
carrier	O
as	O
a	O
flagship	O
device	O
,	O
but	O
its	O
launch	O
was	O
dampened	O
by	O
a	O
software	O
bug	O
that	O
prevented	O
the	O
device	O
from	O
connecting	O
to	O
certain	O
mobile	O
data	O
networks	O
,	O
forcing	O
AT&T	O
to	O
issue	O
credits	O
to	O
those	O
who	O
purchased	O
the	O
device	O
.	O
</s>
<s>
Upon	O
its	O
launch	O
in	O
April	O
2012	O
,	O
the	O
Lumia	B-Device
900	I-Device
was	O
listed	O
as	O
a	O
top	O
seller	O
on	O
Amazon.com,	O
but	O
online	O
sales	O
began	O
to	O
taper	O
off	O
by	O
May	O
.	O
</s>
<s>
While	O
not	O
revealing	O
further	O
details	O
,	O
a	O
Nokia	O
representative	O
stated	O
that	O
the	O
company	O
was	O
"	O
pleased	O
with	O
the	O
consumer	O
reaction	O
,	O
as	O
well	O
as	O
the	O
support	O
we	O
have	O
received	O
from	O
AT&T	O
"	O
,	O
while	O
T	O
's	O
mobility	O
chief	O
Ralph	O
de	O
la	O
Vega	O
stated	O
that	O
the	O
Lumia	B-Device
900	I-Device
had	O
"	O
exceeded	O
expectations	O
"	O
.	O
</s>
<s>
In	O
early	O
2012	O
,	O
Nokia	O
released	O
the	O
Lumia	B-Application
610	I-Application
,	O
a	O
new	O
entry-level	O
device	O
taking	O
advantage	O
of	O
the	O
lower	O
system	O
requirements	O
introduced	O
by	O
Windows	B-Protocol
Phone	I-Protocol
7	O
's	O
"	O
Tango	O
"	O
update	O
.	O
</s>
<s>
These	O
new	O
low-end	O
devices	O
were	O
intended	O
to	O
improve	O
Windows	B-Protocol
Phone	I-Protocol
adoption	O
in	O
emerging	O
markets	O
such	O
as	O
China	O
.	O
</s>
<s>
In	O
June	O
2012	O
,	O
both	O
Nokia	O
and	O
Microsoft	O
received	O
much	O
criticism	O
after	O
it	O
was	O
revealed	O
that	O
the	O
Windows	B-Protocol
Phone	I-Protocol
7	O
Lumia	O
devices	O
will	O
not	O
be	O
upgradable	O
to	O
Microsoft	O
's	O
second	O
generation	O
Windows	B-Protocol
Phone	I-Protocol
platform	O
,	O
Windows	B-Protocol
Phone	I-Protocol
8	O
.	O
</s>
<s>
It	O
has	O
been	O
said	O
that	O
those	O
devices	O
wo	O
n't	O
be	O
upgraded	O
because	O
Windows	B-Protocol
Phone	I-Protocol
8	O
uses	O
an	O
entirely	O
different	O
kernel	O
(	O
Windows	B-Device
NT	I-Device
)	O
.	O
</s>
<s>
The	O
original	O
Lumia	B-Device
range	I-Device
instead	O
received	O
a	O
different	O
update	O
called	O
Windows	B-Protocol
Phone	I-Protocol
7.8	O
.	O
</s>
<s>
Later	O
in	O
September	O
2012	O
,	O
Nokia	O
unveiled	O
the	O
Lumia	B-Device
820	I-Device
and	O
the	O
Lumia	B-Device
920	I-Device
,	O
its	O
first	O
two	O
devices	O
to	O
use	O
Windows	B-Protocol
Phone	I-Protocol
8	O
.	O
</s>
<s>
Both	O
featured	O
NFC	O
,	O
with	O
the	O
Lumia	B-Device
820	I-Device
embedding	O
a	O
microSD	O
card	O
slot	O
,	O
and	O
an	O
optional	O
Wireless	B-Application
Charging	I-Application
Shell	O
for	O
Qi	O
wireless	B-Application
charging	I-Application
.	O
</s>
<s>
The	O
Lumia	B-Device
920	I-Device
also	O
notably	O
featured	O
Qi	O
wireless	B-Application
charging	I-Application
,	O
and	O
a	O
"	O
PureView	B-Device
"	O
camera	O
with	O
optical	O
image	O
stabilization	O
.	O
</s>
<s>
While	O
Nokia	O
received	O
criticism	O
when	O
it	O
was	O
revealed	O
that	O
a	O
demonstration	O
video	O
of	O
its	O
image	O
stabilization	O
technology	O
was	O
,	O
in	O
fact	O
,	O
filmed	O
using	O
a	O
professional	O
camera	O
,	O
the	O
Lumia	B-Device
920	I-Device
was	O
a	O
commercial	O
success	O
for	O
the	O
company	O
.	O
</s>
<s>
At	O
MWC	O
2013	O
,	O
Nokia	O
introduced	O
two	O
more	O
Windows	B-Protocol
Phone	I-Protocol
8	O
devices	O
:	O
the	O
mid-range	O
Nokia	B-Application
Lumia	I-Application
720	I-Application
and	O
the	O
budget	O
Nokia	B-Device
Lumia	I-Device
520	I-Device
,	O
the	O
latter	O
of	O
which	O
has	O
become	O
the	O
highest	O
selling	O
Windows	B-Protocol
phone	I-Protocol
device	O
ever	O
.	O
</s>
<s>
In	O
2013	O
,	O
Nokia	O
also	O
introduced	O
the	O
Lumia	B-Application
925	I-Application
,	O
a	O
revised	O
version	O
of	O
the	O
920	B-Device
with	O
a	O
slimmer	O
build	O
incorporating	O
aluminium	O
,	O
and	O
the	O
Lumia	B-Device
1020	I-Device
,	O
which	O
features	O
a	O
41-megapixel	O
camera	O
based	O
on	O
technology	O
from	O
its	O
Symbian-based	O
808	B-Language
PureView	I-Language
.	O
</s>
<s>
On	O
22	O
October	O
2013	O
,	O
Nokia	O
extended	O
the	O
Lumia	O
brand	O
into	O
the	O
tablet	B-Device
market	O
with	O
the	O
unveiling	O
of	O
the	O
Lumia	B-Device
2520	I-Device
;	O
running	O
Microsoft	O
's	O
Windows	B-Operating_System
RT	I-Operating_System
operating	O
system	O
,	O
it	O
was	O
the	O
company	O
's	O
first	O
tablet	B-Device
since	O
the	O
Nokia	B-Device
Internet	I-Device
tablet	I-Device
range	O
.	O
</s>
<s>
Some	O
critics	O
believed	O
that	O
the	O
usage	O
of	O
Windows	B-Operating_System
RT	I-Operating_System
rather	O
than	O
full	O
Microsoft	O
Windows	O
8.1	O
led	O
to	O
bad	O
sales	O
,	O
as	O
most	O
major	O
Windows	O
tablet	B-Device
makers	O
have	O
used	O
Windows	O
8.1	O
in	O
favour	O
of	O
Windows	B-Operating_System
RT	I-Operating_System
.	O
</s>
<s>
Lumia	B-Device
2520	I-Device
was	O
discontinued	O
in	O
early	O
2015	O
.	O
</s>
<s>
Although	O
sales	O
of	O
the	O
Lumia	O
line	O
had	O
exceeded	O
those	O
of	O
BlackBerry	B-Operating_System
in	O
the	O
same	O
period	O
,	O
Nokia	O
still	O
made	O
an	O
operating	O
loss	O
of	O
€115m	O
,	O
with	O
revenues	O
falling	O
24%	O
to	O
€5.7	O
bn	O
following	O
the	O
second	O
quarter	O
of	O
2013	O
.	O
</s>
<s>
At	O
the	O
same	O
time	O
,	O
overall	O
Windows	B-Protocol
Phone	I-Protocol
market	O
share	O
hit	O
double	O
figures	O
in	O
several	O
countries	O
in	O
Europe	O
and	O
other	O
regions	O
.	O
</s>
<s>
On	O
3	O
September	O
2013	O
,	O
Microsoft	O
announced	O
its	O
intent	O
to	O
acquire	O
Nokia	O
's	O
mobile	O
phone	O
business	O
(	O
including	O
rights	O
to	O
the	O
Lumia	O
and	O
low-end	O
Asha	B-Device
brands	O
)	O
in	O
an	O
overall	O
deal	O
of	O
over	O
US$7bn	O
.	O
</s>
<s>
While	O
Microsoft	O
will	O
license	O
the	O
Nokia	O
name	O
under	O
a	O
10-year	O
agreement	O
,	O
the	O
company	O
will	O
only	O
be	O
able	O
to	O
use	O
it	O
on	O
feature	B-Device
phones	I-Device
:	O
those	O
running	O
the	O
Series	B-Operating_System
30	I-Operating_System
,	O
Series	B-Operating_System
30+	I-Operating_System
and	O
the	O
Series	B-Operating_System
40	I-Operating_System
mobile	O
operating	O
systems	O
based	O
on	O
Java	B-Language
ME	I-Language
and	O
MediaTek	B-Architecture
technology	O
,	O
respectively	O
.	O
</s>
<s>
Codenames	O
for	O
Lumia	O
phones	O
developed	O
from	O
late	O
2013	O
were	O
based	O
on	O
James	O
Bond	O
movies	O
,	O
including	O
"	O
Moneypenny	O
"	O
(	O
which	O
became	O
Nokia	B-Device
Lumia	I-Device
630	I-Device
)	O
and	O
"	O
Goldfinger	O
"	O
(	O
which	O
would	O
be	O
the	O
cancelled	O
Lumia	B-Device
"	I-Device
McLaren	I-Device
"	I-Device
)	O
.	O
</s>
<s>
On	O
13	O
September	O
2013	O
,	O
the	O
New	O
York	O
Times	O
writer	O
Nick	O
Wingfield	O
revealed	O
that	O
Nokia	O
had	O
been	O
testing	O
the	O
Android	B-Application
operating	I-Application
system	I-Application
on	O
its	O
Lumia	O
hardware	O
.	O
</s>
<s>
It	O
was	O
one	O
of	O
two	O
known	O
Android	B-Application
projects	O
at	O
the	O
company	O
;	O
the	O
other	O
was	O
running	O
the	O
OS	O
on	O
low	O
–	O
end	O
Asha	B-Device
hardware	O
,	O
which	O
resulted	O
in	O
the	O
Nokia	B-Device
X	I-Device
family	I-Device
of	O
devices	O
.	O
</s>
<s>
Despite	O
the	O
testing	O
,	O
the	O
Android-based	O
Lumia	O
handsets	O
were	O
never	O
released	O
and	O
only	O
altered	O
Asha	B-Device
devices	O
were	O
brought	O
to	O
the	O
market	O
.	O
</s>
<s>
In	O
July	O
2014	O
,	O
Microsoft	O
announced	O
that	O
it	O
would	O
discontinue	O
the	O
majority	O
of	O
its	O
Nokia-branded	O
devices	O
,	O
including	O
the	O
Asha	B-Device
,	O
S30	O
,	O
S40	O
,	O
and	O
X	O
platforms	O
,	O
in	O
favor	O
of	O
low-cost	O
Lumia	O
devices	O
inheriting	O
their	O
design	O
.	O
</s>
<s>
This	O
left	O
S30+	B-Operating_System
as	O
Microsoft	O
's	O
only	O
remaining	O
Nokia-branded	O
phone	O
platform	O
until	O
it	O
was	O
sold	O
to	O
HMD	O
Global	O
in	O
May	O
2016	O
,	O
who	O
,	O
the	O
following	O
February	O
,	O
would	O
announce	O
the	O
first	O
Nokia-branded	O
true	O
Android	B-Application
phone	I-Application
,	O
the	O
Nokia	B-Application
6	I-Application
,	O
in	O
January	O
2017	O
.	O
</s>
<s>
Even	O
after	O
the	O
acquisition	O
of	O
Nokia	O
's	O
mobile	B-Application
device	I-Application
business	O
by	O
Microsoft	O
,	O
several	O
Lumia	O
devices	O
were	O
unveiled	O
by	O
Microsoft	O
Mobile	O
in	O
September	O
2014	O
that	O
still	O
carried	O
the	O
Nokia	O
name	O
,	O
including	O
the	O
Lumia	B-Device
830	I-Device
and	O
Lumia	B-Application
735	I-Application
.	O
</s>
<s>
As	O
a	O
part	O
of	O
the	O
change	O
of	O
ownership	O
,	O
the	O
social	O
network	O
pages	O
have	O
also	O
been	O
rebranded	O
as	O
Microsoft	B-Device
Lumia	I-Device
rather	O
than	O
Microsoft	O
Mobile	O
;	O
this	O
sought	O
to	O
emphasize	O
the	O
Windows	B-Protocol
Phone	I-Protocol
over	O
other	O
Nokia	O
mobile	O
phones	O
while	O
also	O
updating	O
social	O
network	O
pages	O
of	O
Windows	B-Protocol
Phone	I-Protocol
to	O
the	O
new	O
Microsoft	B-Device
Lumia	I-Device
branding	O
.	O
</s>
<s>
However	O
,	O
in	O
October	O
2014	O
,	O
Microsoft	O
officially	O
announced	O
that	O
it	O
would	O
phase	O
out	O
the	O
Nokia	O
brand	O
in	O
its	O
promotion	O
and	O
production	O
of	O
Lumia	O
smartphones	B-Application
,	O
and	O
that	O
future	O
Lumia	O
models	O
would	O
be	O
branded	O
solely	O
with	O
the	O
name	O
and	O
logo	O
of	O
Microsoft	O
.	O
</s>
<s>
In	O
November	O
2014	O
,	O
Microsoft	O
announced	O
its	O
first	O
self-branded	O
phone	O
,	O
Microsoft	B-Application
Lumia	I-Application
535	I-Application
.	O
</s>
<s>
The	O
Nokia	B-Device
Lumia	I-Device
638	I-Device
was	O
the	O
last	O
Lumia	O
product	O
to	O
bear	O
the	O
Nokia	O
brand	O
,	O
and	O
was	O
only	O
released	O
in	O
India	O
in	O
December	O
2014	O
.	O
</s>
<s>
In	O
November	O
2014	O
,	O
a	O
post	O
by	O
a	O
Microsoft	O
Twitter	B-Application
account	I-Application
stated	O
that	O
all	O
Nokia	O
and	O
Microsoft	B-Device
Lumia	I-Device
smartphones	B-Application
running	O
Windows	B-Protocol
Phone	I-Protocol
8	O
and	O
8.1	O
would	O
receive	O
updates	O
to	O
Windows	B-Operating_System
10	I-Operating_System
;	O
however	O
,	O
following	O
the	O
official	O
unveiling	O
,	O
Microsoft	O
denied	O
this	O
,	O
stating	O
that	O
they	O
instead	O
were	O
targeting	O
the	O
"	O
majority	O
"	O
of	O
Lumia	O
phones	O
and	O
that	O
not	O
all	O
phones	O
would	O
receive	O
the	O
update	O
or	O
support	O
all	O
of	O
its	O
features	O
.	O
</s>
<s>
Later	O
,	O
Microsoft	O
confirmed	O
that	O
low-end	O
devices	O
with	O
512MB	O
of	O
RAM	O
(	O
including	O
the	O
Nokia	B-Device
Lumia	I-Device
520	I-Device
,	O
which	O
represents	O
24.5	O
%	O
of	O
all	O
Windows	B-Application
Phone	I-Application
devices	I-Application
sold	O
)	O
,	O
would	O
also	O
get	O
the	O
Windows	B-Operating_System
10	I-Operating_System
upgrade	O
,	O
but	O
reaffirmed	O
that	O
not	O
all	O
of	O
its	O
features	O
would	O
be	O
supported	O
on	O
these	O
devices	O
.	O
</s>
<s>
Additionally	O
,	O
Microsoft	O
stated	O
on	O
January	O
16	O
,	O
2015	O
,	O
that	O
low-end	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
phones	O
will	O
not	O
get	O
some	O
Lumia	O
Denim	O
features	O
.	O
</s>
<s>
In	O
July	O
2015	O
,	O
Bloomberg	O
reported	O
that	O
Microsoft	O
had	O
a	O
planned	O
restructuring	O
of	O
Microsoft	O
Mobile	O
,	O
which	O
includes	O
the	O
Microsoft	B-Device
Lumia	I-Device
range	O
.	O
</s>
<s>
As	O
part	O
of	O
a	O
larger	O
restructuring	O
,	O
the	O
Microsoft	B-Device
Devices	I-Device
&	O
Studios	O
engineering	O
group	O
was	O
merged	O
with	O
the	O
Operating	O
Systems	O
Engineering	O
Group	O
to	O
form	O
the	O
larger	O
Windows	O
&	O
Devices	O
Engineering	O
Group	O
.	O
</s>
<s>
In	O
July	O
2015	O
,	O
it	O
was	O
announced	O
that	O
the	O
head	O
of	O
Surface	B-Device
,	O
Panos	O
Panay	O
,	O
would	O
head	O
the	O
new	O
Microsoft	B-Device
devices	I-Device
unit	O
,	O
which	O
would	O
include	O
the	O
Microsoft	B-Device
Lumia	I-Device
as	O
well	O
as	O
various	O
other	O
Microsoft	B-Device
hardware	I-Device
products	O
such	O
as	O
the	O
Band	B-Device
,	O
HoloLens	O
,	O
and	O
Xbox	B-Protocol
.	O
</s>
<s>
In	O
October	O
2015	O
,	O
Microsoft	O
launched	O
the	O
first	O
Lumia	O
devices	O
running	O
on	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
:	O
the	O
Lumia	B-Application
950	I-Application
,	O
Lumia	B-Device
950	I-Device
XL	I-Device
and	O
Lumia	B-Device
550	I-Device
.	O
</s>
<s>
In	O
February	O
2016	O
,	O
the	O
Lumia	B-Application
650	I-Application
,	O
which	O
also	O
runs	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
,	O
was	O
launched	O
.	O
</s>
<s>
Since	O
the	O
Lumia	B-Device
series	I-Device
make	O
up	O
95%	O
of	O
total	O
Windows	O
Phone/Windows	O
10	O
Mobile	O
sales	O
,	O
the	O
operating	O
system	O
market	O
share	O
also	O
shrunk	O
along	O
with	O
it	O
.	O
</s>
<s>
Shortly	O
after	O
the	O
discontinuation	O
of	O
the	O
Elite	B-Application
X3	I-Application
,	O
HP	O
's	O
attempt	O
to	O
bring	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
to	O
a	O
niche	O
market	O
,	O
Microsoft	O
's	O
corporate	O
vice	O
president	O
Joe	O
Belfiore	O
confirmed	O
that	O
Microsoft	O
would	O
no	O
longer	O
sell	O
or	O
manufacture	O
new	O
mobile	B-Application
devices	I-Application
.	O
</s>
<s>
Nokia	O
and	O
Microsoft	O
Mobile	O
have	O
released	O
several	O
updates	O
unique	O
to	O
Lumia	O
devices	O
which	O
feature	O
a	O
combination	O
of	O
firmware	B-Application
and	O
software	O
updates	O
.	O
</s>
<s>
Because	O
Lumia	O
devices	O
exclusively	O
use	O
Windows	B-Protocol
Phone	I-Protocol
,	O
major	O
operating	O
system	O
updates	O
are	O
often	O
bundled	O
with	O
the	O
firmware	B-Application
updates	O
upon	O
release	O
.	O
</s>
<s>
Similar	O
to	O
how	O
Windows	B-Protocol
Phones	I-Protocol
receive	O
operating	O
system	O
updates	O
,	O
Lumia	O
update	O
releases	O
are	O
dependent	O
on	O
carriers	O
who	O
decide	O
if	O
and	O
when	O
devices	O
are	O
to	O
receive	O
them	O
.	O
</s>
<s>
However	O
,	O
operating	O
system	O
updates	O
are	O
not	O
subject	O
to	O
these	O
constraints	O
if	O
users	O
are	O
part	O
of	O
Microsoft	O
's	O
Windows	B-Application
Insider	I-Application
or	O
Preview	O
for	O
Developers	O
programs	O
.	O
</s>
<s>
Nokia	B-Device
Device	I-Device
Hub	I-Device
(	O
formerly	O
a	O
beta	O
in	O
the	O
Nokia	B-Language
Beta	I-Language
Labs	I-Language
)	O
bundled	O
with	O
settings	O
.	O
</s>
<s>
All	O
devices	O
in	O
the	O
Lumia	O
line	O
were	O
smartphones	B-Application
(	O
including	O
one	O
tablet	B-Device
computer	I-Device
)	O
running	O
Microsoft	O
Windows	O
software	O
.	O
</s>
<s>
All	O
the	O
smartphones	B-Application
were	O
full-touch	O
in	O
a	O
candybar	O
form	O
.	O
</s>
<s>
There	O
were	O
no	O
QWERTY	O
devices	O
,	O
although	O
there	O
were	O
reports	O
in	O
2012	O
that	O
Nokia	O
was	O
working	O
on	O
such	O
device	O
similar	O
to	O
the	O
Nokia	B-Language
Eseries	I-Language
.	O
</s>
<s>
Under	O
Nokia	O
,	O
numbers	O
larger	O
than	O
10	O
indicated	O
a	O
phablet	B-Application
(	O
e.g.	O
</s>
<s>
1320	B-Application
,	O
1520	B-Application
)	O
or	O
tablet	B-Device
(	O
2520	B-Device
)	O
.	O
</s>
<s>
950	B-Device
XL	I-Device
)	O
.	O
</s>
<s>
920	B-Device
and	O
925	B-Application
)	O
,	O
a	O
4G-capable	O
variant	O
(	O
e.g.	O
</s>
<s>
730	B-Device
and	O
735	B-Application
)	O
or	O
a	O
regional	O
or	O
carrier-specific	O
variant	O
.	O
</s>
<s>
+	O
Microsoft	B-Device
Lumia	I-Device
devices	O
Name	O
Codename	O
Release	O
date	O
Series	O
Generation	O
Installed	O
operating	O
system	O
Variations	O
Microsoft	B-Application
Lumia	I-Application
535	I-Application
Chakra	O
500	O
3	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
Dual	O
SIM	O
Microsoft	B-Device
Lumia	I-Device
435	I-Device
Vela	O
400	O
3	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
Dual	O
SIM	O
Microsoft	B-Application
Lumia	I-Application
532	I-Application
Leo	O
500	O
3	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
Dual	O
SIM	O
Microsoft	B-Application
Lumia	I-Application
640	I-Application
Dempsey	O
600	O
4	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
LTE	O
,	O
Dual	O
SIM	O
,	O
LTE	O
Dual	O
SIM	O
.	O
</s>
<s>
Microsoft	B-Application
Lumia	I-Application
640	I-Application
XL	O
Makepeace	O
600	O
4	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
LTE	O
,	O
Dual	O
SIM	O
,	O
LTE	O
Dual	O
SIM	O
.	O
</s>
