<s>
The	O
LG	B-Application
Quantum	I-Application
or	O
Optimus	O
7Q	O
(	O
also	O
known	O
as	O
the	O
C900	O
)	O
is	O
a	O
slider	O
smartphone	B-Application
which	O
runs	O
Microsoft	O
's	O
Windows	B-Protocol
Phone	I-Protocol
operating	O
system	O
.	O
</s>
<s>
The	O
LG	B-Application
Quantum	I-Application
was	O
launched	O
November	O
8	O
,	O
2010	O
on	O
AT&T	O
.	O
</s>
<s>
The	O
C900	O
ran	O
the	O
Windows	B-Protocol
Phone	I-Protocol
7.0	O
operating	O
system	O
out-of-the-box	O
and	O
was	O
later	O
updated	O
to	O
Windows	B-Protocol
Phone	I-Protocol
7.5	O
.	O
</s>
<s>
The	O
C900	O
also	O
supports	O
the	O
Windows	B-Protocol
Phone	I-Protocol
7.8	O
update	O
which	O
launched	O
which	O
offers	O
the	O
new	O
Windows	B-Protocol
Phone	I-Protocol
8.0	O
style	O
tiles	O
and	O
other	O
improvements	O
.	O
</s>
<s>
The	O
Quantum	O
features	O
a	O
3.5	O
"	O
TFT	O
capacitive	O
touch	B-Device
screen	I-Device
with	O
a	O
resolution	O
of	O
480	O
x	O
800	O
pixels	O
.	O
</s>
<s>
The	O
Quantum	O
is	O
powered	O
by	O
a	O
Qualcomm	O
QSD8250	O
1GHz	O
Scorpion	O
(	O
Snapdragon	B-Architecture
)	O
and	O
has	O
512	O
MB	O
RAM	O
and	O
a	O
512	O
MB	O
ROM	O
.	O
</s>
<s>
The	O
device	O
runs	O
on	O
T	O
's	O
3G	B-Architecture
network	I-Architecture
.	O
</s>
<s>
The	O
Quantum	O
is	O
one	O
of	O
the	O
few	O
Windows	B-Protocol
Phones	I-Protocol
sporting	O
a	O
slide-out	O
QWERTY	O
keyboard	O
.	O
</s>
<s>
Other	O
Windows	B-Protocol
Phones	I-Protocol
with	O
physical	O
keyboards	O
are	O
the	O
Dell	B-Application
Venue	I-Application
Pro	I-Application
and	O
HTC	B-Application
7	I-Application
Pro	I-Application
,	O
making	O
it	O
a	O
rare-breed	O
of	O
Windows	B-Protocol
Phone	I-Protocol
.	O
</s>
<s>
The	O
Quantum	O
is	O
also	O
one	O
of	O
the	O
only	O
Windows	B-Protocol
Phones	I-Protocol
with	O
a	O
physical	O
Start	O
button	O
,	O
rather	O
than	O
the	O
capacitive	O
buttons	O
seen	O
on	O
other	O
Windows	B-Protocol
Phones	I-Protocol
.	O
</s>
