<s>
The	O
Nokia	B-Application
Lumia	I-Application
810	I-Application
is	O
a	O
Windows	B-Protocol
Phone	I-Protocol
smartphone	B-Application
made	O
by	O
Nokia	O
exclusively	O
for	O
wireless	O
carrier	O
T-Mobile	O
US	O
.	O
</s>
<s>
The	O
device	O
runs	O
the	O
then-new	O
Windows	B-Protocol
Phone	I-Protocol
8	O
operating	O
system	O
(	O
despite	O
being	O
numbered	O
in	O
the	O
x10	O
series	O
which	O
is	O
used	O
for	O
Windows	B-Protocol
Phone	I-Protocol
7	O
)	O
and	O
features	O
a	O
4.3-inch	O
AMOLED	B-Algorithm
WVGA	O
ClearBlack	O
display	O
,	O
an	O
8-megapixel	O
rear-facing	O
camera	O
,	O
a	O
1.5GHz	O
Snapdragon	B-Architecture
processor	O
,	O
exchangeable	O
shells	O
(	O
cyan	O
and	O
black	O
)	O
and	O
supports	O
Qi	O
inductive	B-Application
charging	I-Application
when	O
equipped	O
with	O
a	O
specific	O
shell	O
.	O
</s>
<s>
The	O
phone	O
includes	O
an	O
enhanced	O
Nokia	O
Drive	O
package	O
with	O
voice-guided	O
turn-by-turn	B-Application
navigation	I-Application
,	O
and	O
Nokia	O
Transit	O
,	O
which	O
allows	O
navigation	O
through	O
local	O
public	O
transportation	O
.	O
</s>
<s>
The	O
October	O
8	O
announcement	O
included	O
Nokia	B-Language
Music	I-Language
,	O
which	O
can	O
also	O
be	O
used	O
offline	O
.	O
</s>
<s>
The	O
Lumia	B-Application
810	I-Application
was	O
discontinued	O
in	O
stores	O
in	O
April	O
2013	O
.	O
</s>
<s>
As	O
of	O
April	O
4	O
,	O
2014	O
,	O
the	O
day	O
Microsoft	O
introduced	O
its	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
OS	O
update	O
,	O
T-Mobile	O
US	O
stated	O
that	O
"	O
no	O
updates	O
"	O
for	O
the	O
810	O
will	O
be	O
made	O
available	O
.	O
</s>
<s>
In	O
February	O
2015	O
,	O
T-Mobile	O
confirmed	O
that	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
would	O
not	O
come	O
to	O
devices	O
other	O
than	O
the	O
Lumia	B-Device
521	O
and	O
Lumia	B-Device
925	O
.	O
</s>
<s>
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
was	O
not	O
released	O
for	O
the	O
phone	O
,	O
making	O
the	O
Lumia	B-Application
810	I-Application
the	O
only	O
Nokia	O
Windows	B-Protocol
phone	I-Protocol
to	O
not	O
be	O
updated	O
to	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
.	O
</s>
<s>
However	O
,	O
it	O
's	O
possible	O
to	O
install	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
on	O
the	O
Lumia	B-Application
810	I-Application
through	O
Microsoft	O
's	O
Preview	O
for	O
Developers	O
app	O
.	O
</s>
