<s>
The	O
Samsung	B-Application
Galaxy	I-Application
Duos	I-Application
(	O
stylized	O
as	O
SAMSUNG	B-Application
GALAXY	I-Application
DUOS	I-Application
)	O
is	O
a	O
series	O
of	O
Android	B-Application
dual	O
SIM	O
mobile	O
devices	O
designed	O
,	O
manufactured	O
,	O
and	O
marketed	O
by	O
Samsung	O
Electronics	O
as	O
Duos	O
.	O
</s>
<s>
The	O
Samsung	B-Operating_System
Galaxy	I-Operating_System
offers	O
several	O
different	O
ranges	O
of	O
devices	O
,	O
including	O
Smartphones	O
,	O
Phablets	B-Application
,	O
Tablets	B-Device
.	O
</s>
<s>
These	O
Android	B-Application
phones	I-Application
have	O
a	O
menu	O
option	O
“	O
Dual	O
SIM	O
Always	O
on	O
”	O
which	O
when	O
activated	O
activates	O
call	O
forwarding	O
on	O
the	O
carrier	O
's	O
network	O
.	O
</s>
