<s>
The	O
Samsung	B-Application
Galaxy	I-Application
S	I-Application
Duos	I-Application
2	O
is	O
a	O
dual	O
SIM	O
Android	B-Application
smartphone	B-Application
,	O
produced	O
,	O
released	O
and	O
marketed	O
by	O
Samsung	B-Application
Electronics	O
,	O
which	O
serves	O
as	O
an	O
immediate	O
successor	O
to	O
the	O
original	O
Galaxy	B-Application
S	I-Application
Duos	O
.	O
</s>
<s>
It	O
is	O
the	O
dual	O
SIM	O
version	O
of	O
the	O
Samsung	B-Operating_System
Galaxy	I-Operating_System
TrendPlus	O
.	O
</s>
<s>
In	O
contrast	O
with	O
other	O
Dual	O
SIM	O
Samsung	B-Application
models	O
,	O
this	O
phone	O
is	O
a	O
part	O
of	O
the	O
high-end	O
"	O
S	O
"	O
series	O
.	O
</s>
<s>
It	O
features	O
a	O
rounded	O
,	O
polycarbonate	O
chassis	O
,	O
faux	O
metal	O
trim	O
and	O
a	O
removable	O
rear	O
cover	O
,	O
typical	O
of	O
most	O
Samsung	B-Application
smartphones	B-Application
since	O
the	O
Galaxy	B-Application
S	I-Application
III	O
.	O
</s>
<s>
The	O
S	O
Duos2	O
's	O
screen	O
is	O
a	O
4.0-inch	O
(	O
102mm	O
)	O
233p	O
TFT	O
LCD	B-Device
panel	I-Device
,	O
which	O
is	O
the	O
same	O
as	O
that	O
of	O
the	O
SDuos	O
.	O
</s>
<s>
The	O
Galaxy	B-Application
S	I-Application
Duos2	O
has	O
a	O
5-megapixel	O
camera	O
with	O
LED	O
flash	O
and	O
0.3-megapixel	O
front-facing	O
camera	O
.	O
</s>
<s>
Unlike	O
entry-level	O
dual	O
SIM	O
models	O
from	O
Samsung	B-Application
,	O
the	O
S	O
Duos2	O
is	O
active	O
on	O
both	O
SIMs	O
all	O
the	O
time	O
so	O
it	O
is	O
ready	O
to	O
receive	O
calls	O
on	O
either	O
SIM	O
when	O
a	O
call	O
is	O
not	O
already	O
in	O
progress	O
.	O
</s>
<s>
A	O
limitation	O
of	O
the	O
phone	O
is	O
that	O
only	O
one	O
SIM	O
can	O
be	O
active	O
on	O
UMTS	B-Protocol
(	O
and	O
therefore	O
data	O
)	O
at	O
a	O
time	O
and	O
so	O
it	O
may	O
be	O
unsuitable	O
for	O
certain	O
combinations	O
of	O
networks	O
.	O
</s>
<s>
The	O
S	O
Duos2	O
ships	O
with	O
Android	B-Application
4.2.2	I-Application
"	O
Jelly	B-Application
Bean	I-Application
"	O
and	O
Samsung	B-Application
's	O
TouchWiz	B-Application
software	O
.	O
</s>
<s>
The	O
S	O
Duos2	O
adds	O
some	O
of	O
the	O
Galaxy	O
S4	B-Application
's	O
features	O
such	O
as	O
the	O
widgets	O
which	O
were	O
upgraded	O
to	O
the	O
Samsung	B-Application
proprietary	O
widgets	O
used	O
by	O
models	O
bearing	O
the	O
version	O
of	O
the	O
OS	O
.	O
</s>
