<s>
Samsung	B-Application
Galaxy	I-Application
A21s	I-Application
is	O
a	O
mid-range	O
Android	B-Application
smartphone	O
designed	O
,	O
developed	O
,	O
marketed	O
,	O
and	O
manufactured	O
by	O
Samsung	O
Electronics	O
as	O
part	O
of	O
its	O
Galaxy	B-Application
A	I-Application
series	I-Application
.	O
</s>
<s>
Key	O
upgrades	O
over	O
the	O
previous	O
model	O
,	O
the	O
Samsung	B-Application
Galaxy	I-Application
A20s	I-Application
,	O
include	O
the	O
new	O
Exynos	O
850	O
chipset	O
and	O
an	O
improved	O
camera	O
setup	O
.	O
</s>
<s>
The	O
Galaxy	B-Application
A21s	I-Application
has	O
a	O
6.5	O
"	O
PLS	O
TFT	O
LCD	O
Infinity	O
O	O
display	O
with	O
HD+	O
720	O
x	O
1600	O
resolution	O
,	O
20:9	O
aspect	B-Device
ratio	I-Device
,	O
~	O
270	O
ppi	O
density	O
.	O
</s>
<s>
The	O
phone	O
is	O
powered	O
by	O
Exynos	O
850	O
(	O
8	O
nm	O
)	O
SoC	O
(	O
System	B-Architecture
on	I-Architecture
a	I-Architecture
chip	I-Architecture
)	O
with	O
a	O
octa-core	O
(	O
4x2.0	O
GHz	O
Cortex-A55	O
&	O
4x2.0	O
GHz	O
Cortex-A55	O
)	O
CPU	O
and	O
a	O
Mali-G52	O
GPU	B-Architecture
.	O
</s>
<s>
The	O
phone	O
comes	O
with	O
either	O
4GB	O
or	O
6GB	O
RAM	B-Architecture
as	O
well	O
as	O
64GB	O
or	O
128GB	O
internal	B-General_Concept
storage	I-General_Concept
,	O
which	O
can	O
be	O
expanded	O
via	O
a	O
microSD	O
card	O
of	O
up	O
to	O
512GB	O
.	O
</s>
<s>
It	O
also	O
has	O
a	O
rear-mounted	O
fingerprint	B-Algorithm
sensor	O
.	O
</s>
<s>
The	O
Samsung	B-Application
Galaxy	I-Application
A21s	I-Application
has	O
a	O
four	O
camera	O
setup	O
arranged	O
in	O
an	O
"	O
L	O
"	O
shape	O
located	O
in	O
the	O
corner	O
with	O
a	O
rectangular	O
protrusion	O
similar	O
to	O
that	O
of	O
the	O
iPhone	B-Operating_System
11	I-Operating_System
and	O
the	O
Pixel	B-Device
4	I-Device
.	O
</s>
<s>
It	O
also	O
has	O
a	O
single	O
13	O
MP	O
front	O
facing	O
camera	O
,	O
which	O
sits	O
in	O
a	O
small	O
punch	O
hole	O
on	O
the	O
front	O
of	O
the	O
screen	B-Device
.	O
</s>
<s>
The	O
Galaxy	B-Application
A21s	I-Application
originally	O
came	O
with	O
Android	B-Application
10	I-Application
and	O
One	O
UI	O
2.5	O
;	O
the	O
current	O
version	O
comes	O
with	O
Android	B-Application
12	I-Application
and	O
One	O
UI	O
4.1	O
.	O
</s>
<s>
The	O
phone	O
has	O
Samsung	B-Application
Knox	I-Application
3.7	I-Application
for	O
added	O
system	O
security	O
.	O
</s>
<s>
The	O
Samsung	B-Application
Galaxy	I-Application
A21s	I-Application
was	O
announced	O
and	O
released	O
in	O
May	O
2020	O
.	O
</s>
