<s>
Samsung	B-Application
Z2	I-Application
is	O
a	O
smartphone	B-Application
produced	O
by	O
Samsung	B-Application
.	O
</s>
<s>
It	O
is	O
the	O
third	O
smartphone	B-Application
to	O
be	O
shipped	O
with	O
the	O
Tizen	B-Application
operating	O
system	O
,	O
after	O
the	O
Samsung	B-Application
Z1	I-Application
and	O
Samsung	B-Application
Z3	I-Application
.	O
</s>
<s>
Its	O
successor	O
the	O
Samsung	B-Application
Z4	I-Application
was	O
released	O
in	O
May	O
2017	O
.	O
</s>
<s>
The	O
Galaxy	O
Z2	O
is	O
powered	O
by	O
an	O
Exynos	O
3475	O
SoC	B-Architecture
including	O
a	O
quad-core	O
1.3	O
GHz	O
ARM	B-Application
Cortex-A7	I-Application
CPU	B-General_Concept
,	O
an	O
ARM	O
Mali-T720	B-General_Concept
GPU	B-Architecture
and	O
1	O
GB	O
RAM	B-Architecture
.	O
</s>
<s>
It	O
features	O
a	O
4.7-inch	O
Super	O
AMOLED	B-Algorithm
display	I-Algorithm
.	O
</s>
<s>
The	O
Galaxy	O
Z2	O
is	O
shipped	O
with	O
Android	B-Application
5.1.1	I-Application
"	O
Lollipop	B-Application
"	O
and	O
Samsung	B-Application
's	O
TouchWiz	B-Application
user	I-Application
interface	I-Application
.	O
</s>
