<s>
The	O
Sony	B-Application
Xperia	I-Application
C4	I-Application
is	O
a	O
mid-range	O
Android	B-Application
smartphone	B-Application
developed	O
and	O
manufactured	O
by	O
Sony	O
and	O
it	O
serves	O
as	O
the	O
successor	O
of	O
the	O
Xperia	B-Application
C3	I-Application
.	O
</s>
<s>
The	O
phone	O
was	O
unveiled	O
on	O
6	O
May	O
2015	O
,	O
and	O
it	O
is	O
marketed	O
as	O
the	O
"	O
Selfie	O
Smartphone	B-Application
"	O
.	O
</s>
<s>
Three	O
months	O
later	O
,	O
Sony	O
unveiled	O
its	O
successor	O
,	O
the	O
Xperia	B-Application
C5	I-Application
Ultra	I-Application
.	O
</s>
<s>
The	O
key	O
features	O
of	O
the	O
phone	O
are	O
the	O
25	O
mm	O
5	O
megapixel	O
front	O
camera	O
and	O
1.7GHz	O
octa-core	O
processor	O
powered	O
by	O
Mediatek	B-Architecture
MT6752	O
.	O
</s>
<s>
The	O
Sony	B-Application
Xperia	I-Application
C4	I-Application
has	O
a	O
5.5-inch	O
IPS	O
LCD	O
display	O
,	O
Octa-core	O
1.7	O
GHz	O
Cortex-A53	O
Mediatek	B-Architecture
MT6752	O
processor	O
,	O
2	O
GB	O
of	O
RAM	B-Architecture
and	O
16	O
GB	O
of	O
internal	O
storage	O
that	O
can	O
be	O
expanded	O
using	O
microSD	O
cards	O
up	O
to	O
256	O
GB	O
.	O
</s>
<s>
On	O
September	O
16	O
,	O
2016	O
,	O
Sony	O
announced	O
that	O
they	O
were	O
beginning	O
the	O
rollout	O
of	O
Android	B-Application
6.0	I-Application
Marshmallow	I-Application
to	O
the	O
Xperia	B-Application
C4	I-Application
and	O
the	O
Xperia	B-Application
C4	I-Application
Dual	O
.	O
</s>
<s>
After	O
the	O
test	O
,	O
the	O
device	O
was	O
claimed	O
to	O
be	O
the	O
"	O
World	O
's	O
best	O
selfie	O
smartphone	B-Application
"	O
and	O
the	O
"	O
Worlds	O
best	O
smartphone	B-Application
for	O
selfies	O
"	O
.	O
</s>
<s>
On	O
26	O
May	O
2015	O
,	O
the	O
dual	O
version	O
of	O
the	O
device	O
released	O
in	O
India	O
along	O
with	O
the	O
dual	O
version	O
of	O
the	O
Xperia	B-Application
M4	I-Application
Aqua	I-Application
.	O
</s>
