<s>
The	O
Fire	B-Application
HD	I-Application
,	O
also	O
known	O
as	O
Kindle	B-Application
Fire	I-Application
HD	I-Application
,	O
is	O
a	O
member	O
of	O
the	O
Amazon	B-Application
Fire	I-Application
family	O
of	O
tablet	B-Application
computers	I-Application
.	O
</s>
<s>
Fire	B-Application
HD	I-Application
refers	O
to	O
Amazon	B-Application
Fire	I-Application
family	O
tablets	B-Device
with	O
HD	O
resolution	O
.	O
</s>
<s>
The	O
ten	O
generation	O
Fire	B-Application
HD	I-Application
subfamily	O
consists	O
of	O
:	O
7	O
"	O
and	O
8.9	O
"	O
(	O
2012	O
models	O
)	O
,	O
7	O
"	O
(	O
2013	O
model	O
)	O
,	O
6	O
"	O
and	O
7	O
"	O
(	O
2014	O
models	O
)	O
,	O
8	O
"	O
and	O
10.1	O
"	O
(	O
2015	O
models	O
)	O
,	O
8	O
"	O
(	O
2016	O
model	O
)	O
,	O
8	O
"	O
and	O
10.1	O
"	O
(	O
2017	O
models	O
)	O
,	O
8	O
"	O
(	O
2018	O
model	O
)	O
,	O
10.1	O
"	O
(	O
2019	O
model	O
)	O
,	O
8	O
"	O
(	O
2020	O
model	O
)	O
,	O
and	O
10.1	O
"	O
(	O
2021	O
model	O
)	O
.	O
</s>
<s>
These	O
devices	O
run	O
the	O
Fire	B-Application
OS	I-Application
operating	O
system	O
.	O
</s>
<s>
The	O
first	O
Fire	B-Application
HD	I-Application
model	O
was	O
announced	O
on	O
September	O
6	O
,	O
2012	O
,	O
and	O
was	O
available	O
in	O
two	O
versions	O
:	O
7	O
"	O
and	O
8.9	O
"	O
.	O
</s>
<s>
On	O
September	O
25	O
,	O
2013	O
,	O
the	O
Fire	B-Application
HD	I-Application
second	O
generation	O
was	O
released	O
.	O
</s>
<s>
The	O
price	O
of	O
the	O
Fire	B-Application
HD	I-Application
7	O
"	O
was	O
reduced	O
to	O
$139	O
,	O
the	O
processor	O
speed	O
was	O
upgraded	O
to	O
1.5GHz	O
,	O
upgraded	O
from	O
"	O
Android	B-Application
based	O
"	O
OS	O
to	O
a	O
compatible	O
proprietary	B-Application
fork	B-Application
of	O
Android	B-Application
named	O
Fire	B-Application
OS	I-Application
3	O
,	O
removed	O
the	O
front	O
camera	O
,	O
used	O
a	O
new	O
form	O
factor	O
and	O
decreased	O
the	O
available	O
storage	O
options	O
.	O
</s>
<s>
In	O
addition	O
,	O
the	O
Fire	B-Application
HD	I-Application
's	O
successor	O
the	O
Kindle	B-Application
Fire	I-Application
HDX	I-Application
was	O
introduced	O
.	O
</s>
<s>
On	O
October	O
2	O
,	O
2014	O
,	O
the	O
Fire	B-Application
HD	I-Application
third	O
generation	O
was	O
released	O
,	O
which	O
is	O
part	O
of	O
the	O
Fire	B-Application
Tablet	I-Application
's	O
fourth	O
generation	O
,	O
with	O
6-inch	O
and	O
7-inch	O
touchscreen	B-Device
sizes	O
.	O
</s>
<s>
In	O
addition	O
,	O
the	O
Fire	B-Application
HD	I-Application
Kids	O
Edition	O
was	O
released	O
,	O
which	O
is	O
the	O
same	O
device	O
as	O
the	O
Fire	B-Application
HD	I-Application
6	O
except	O
it	O
comes	O
with	O
a	O
case	O
and	O
one-year	O
subscription	O
to	O
Kindle	O
Freetime	O
apps	O
.	O
</s>
<s>
In	O
addition	O
,	O
the	O
name	O
"	O
Kindle	O
"	O
was	O
officially	O
removed	O
from	O
the	O
tablets	B-Device
 '	O
name	O
.	O
</s>
<s>
In	O
September	O
2015	O
,	O
Amazon	B-Application
released	O
a	O
new	O
range	O
of	O
Fire	B-Application
tablets	I-Application
with	O
7	O
,	O
8	O
,	O
and	O
10.1	O
inch	O
sizes	O
.	O
</s>
<s>
The	O
7	O
inch	O
was	O
simply	O
called	O
the	O
Fire	B-Application
7	I-Application
,	O
while	O
the	O
8	O
"	O
and	O
10.1	O
"	O
were	O
called	O
Fire	B-Application
HD	I-Application
8	O
and	O
Fire	B-Application
HD	I-Application
10	O
respectively	O
.	O
</s>
<s>
The	O
Fire	B-Application
7	I-Application
is	O
unique	O
as	O
it	O
is	O
,	O
thus	O
far	O
,	O
the	O
lowest	O
priced	O
Fire	B-Application
tablet	I-Application
at	O
$50	O
.	O
</s>
<s>
In	O
September	O
2016	O
,	O
Amazon	B-Application
announced	O
the	O
new	O
Fire	B-Application
HD	I-Application
8	O
with	O
Alexa	O
starting	O
at	O
$90	O
.	O
</s>
<s>
In	O
2017	O
,	O
the	O
seventh	O
Generation	O
Fire	B-Application
7	I-Application
Fire	B-Application
HD	I-Application
8	O
were	O
released	O
.	O
</s>
<s>
In	O
September	O
2018	O
,	O
Amazon	B-Application
refreshed	O
their	O
Fire	B-Application
tablet	I-Application
line	O
with	O
the	O
release	O
of	O
eighth	O
Generation	O
Fire	B-Application
HD	I-Application
8/Kids	O
Edition	O
and	O
HD	O
10	O
.	O
</s>
<s>
On	O
the	O
software	O
side	O
,	O
the	O
2018	O
model	O
is	O
preinstalled	O
with	O
Fire	B-Application
OS	I-Application
6	O
that	O
allows	O
hands-free	O
Alexa	O
control	O
.	O
</s>
<s>
On	O
October	O
7	O
,	O
2019	O
,	O
Amazon	B-Application
announced	O
an	O
update	O
to	O
the	O
Fire	B-Application
HD	I-Application
10	O
that	O
was	O
released	O
on	O
October	O
30	O
,	O
2019	O
.	O
</s>
<s>
The	O
major	O
hardware	O
differences	O
compared	O
to	O
the	O
previous	O
version	O
were	O
replacement	O
of	O
microUSB	O
with	O
USB-C	O
,	O
a	O
faster	O
processor	O
(	O
upgraded	O
from	O
Quad-Core	B-Architecture
up	O
to	O
1.8GHz	O
to	O
Octa-core	B-Architecture
2.0GHz	O
,	O
which	O
Amazon	B-Application
claims	O
is	O
30%	O
faster	O
than	O
the	O
previous	O
one	O
)	O
and	O
battery	O
life	O
that	O
is	O
2	O
hours	O
longer	O
than	O
the	O
previous	O
generation	O
.	O
</s>
<s>
In	O
2020	O
,	O
the	O
Fire	B-Application
HD	I-Application
8	O
was	O
updated	O
with	O
a	O
faster	O
64-bit	B-Device
quad-core	B-Architecture
SoC	O
,	O
more	O
storage	O
(	O
from	O
16/32GB	O
to	O
32/64GB	O
)	O
,	O
USB-C	O
,	O
brighter	O
display	O
,	O
enhanced	O
wifi	O
fidelity	O
,	O
a	O
new	O
front	O
camera	O
location	O
(	O
for	O
landscape	O
video	O
chats	O
instead	O
of	O
portrait	O
)	O
,	O
and	O
Fire	B-Application
OS	I-Application
7	O
(	O
based	O
on	O
Android	B-Application
9	I-Application
)	O
.	O
</s>
<s>
It	O
came	O
in	O
two	O
versions	O
:	O
2GB	O
RAM	B-Architecture
(	O
HD	O
8	O
)	O
and	O
3GB	O
RAM	B-Architecture
(	O
HD	O
8	O
Plus	O
)	O
.	O
</s>
<s>
The	O
3GB	O
RAM	B-Architecture
version	O
,	O
which	O
enabled	O
more	O
memory-intensive	O
apps	O
,	O
was	O
available	O
only	O
in	O
US	O
,	O
UK	O
,	O
DE	O
,	O
and	O
JP	O
marketplaces	O
.	O
</s>
<s>
In	O
2021	O
,	O
the	O
Fire	B-Application
HD	I-Application
10	O
was	O
refreshed	O
with	O
a	O
new	O
front	O
camera	O
location	O
(	O
for	O
landscape	O
video	O
chats	O
instead	O
of	O
portrait	O
)	O
and	O
slimmer	O
side	O
bezels	O
,	O
leading	O
to	O
a	O
more	O
symmetrical	O
design	O
.	O
</s>
<s>
The	O
HD	O
10	O
Plus	O
also	O
has	O
4GB	O
of	O
RAM	B-Architecture
.	O
</s>
<s>
The	O
Fire	B-Application
tablets	I-Application
feature	O
multi-touch	O
touchscreen	B-Device
LCD	B-Device
screens	I-Device
.	O
</s>
<s>
The	O
first	O
generation	O
7	O
"	O
model	O
contains	O
a	O
Texas	B-Device
Instruments	I-Device
OMAP	I-Device
4460	O
processor	O
,	O
while	O
the	O
8.9	O
"	O
model	O
uses	O
an	O
OMAP	B-Device
4470	O
processor	O
.	O
</s>
<s>
The	O
Fire	B-Application
HD	I-Application
also	O
added	O
Bluetooth	B-Protocol
connectivity	O
allowing	O
users	O
to	O
connect	O
an	O
array	O
of	O
wireless	O
accessories	O
including	O
keyboards	O
.	O
</s>
<s>
In	O
June	O
2016	O
,	O
Amazon	B-Application
released	O
a	O
version	O
of	O
the	O
Fire	B-Application
HD	I-Application
10	O
that	O
has	O
an	O
aluminum	O
exterior	O
instead	O
of	O
plastic	O
like	O
the	O
other	O
Fire	B-Application
tablets	I-Application
,	O
and	O
is	O
available	O
at	O
the	O
same	O
price	O
as	O
the	O
plastic	O
version	O
.	O
</s>
<s>
The	O
first	O
Fire	B-Application
HD	I-Application
model	O
to	O
get	O
an	O
octa-core	B-Architecture
processor	O
was	O
the	O
HD	O
10	O
tablet	B-Device
released	O
in	O
2019	O
.	O
</s>
<s>
Also	O
higher	O
RAM	B-Architecture
versions	O
were	O
released	O
:	O
3GB	O
RAM	B-Architecture
in	O
the	O
"	O
HD	O
8	O
plus	O
"	O
in	O
2020	O
and	O
4GB	O
RAM	B-Architecture
in	O
the	O
"	O
HD	O
10	O
plus	O
"	O
in	O
2021	O
.	O
</s>
<s>
The	O
OS	O
is	O
based	O
on	O
a	O
version	O
of	O
Android	B-Application
4.0.3	I-Application
"	O
Ice	B-Application
Cream	I-Application
Sandwich	I-Application
"	O
.	O
</s>
<s>
This	O
does	O
not	O
allow	O
use	O
of	O
Google	B-Application
Play	I-Application
,	O
limiting	O
the	O
number	O
of	O
apps	O
accessible	O
for	O
the	O
Fire	B-Application
HD	I-Application
.	O
</s>
<s>
Fire	B-Application
HD	I-Application
software	O
updates	O
can	O
be	O
received	O
OTA	O
or	O
from	O
the	O
support	O
websites	O
.	O
</s>
<s>
The	O
Fire	B-Application
HD	I-Application
7	O
"	O
second	O
generation	O
used	O
Fire	B-Application
OS	I-Application
3	O
.	O
</s>
<s>
Note	O
that	O
although	O
this	O
version	O
is	O
called	O
the	O
Fire	B-Application
HD	I-Application
7	O
"	O
,	O
it	O
is	O
not	O
the	O
successor	O
to	O
the	O
original	O
Fire	B-Application
HD	I-Application
.	O
</s>
<s>
The	O
Fire	B-Application
HD	I-Application
models	O
second	O
generation	O
were	O
updated	O
to	O
FireOS	B-Application
4.1.1	O
,	O
based	O
on	O
Android	B-Application
4.4.4	O
,	O
in	O
Q3	O
2014	O
.	O
</s>
<s>
The	O
Fire	B-Application
HD	I-Application
6	O
"	O
and	O
7	O
"	O
third	O
generation	O
uses	O
Fire	B-Application
OS	I-Application
4	O
"	O
Sangria	O
"	O
,	O
which	O
features	O
profiles	O
so	O
each	O
user	O
on	O
the	O
tablet	B-Device
can	O
have	O
their	O
own	O
settings	O
and	O
apps	O
.	O
</s>
<s>
The	O
Fire	B-Application
HD	I-Application
8	O
and	O
10	O
fifth	O
generation	O
uses	O
Fire	B-Application
OS	I-Application
5	O
"	O
Bellini	O
"	O
and	O
was	O
released	O
in	O
late	O
2015	O
.	O
</s>
<s>
In	O
September	O
2016	O
,	O
Amazon	B-Application
released	O
virtual	O
assistant	O
Alexa	O
for	O
the	O
sixth	O
generation	O
Fire	B-Application
tablets	I-Application
.	O
</s>
<s>
The	O
2018	O
model	O
of	O
the	O
Fire	B-Application
HD	I-Application
8	O
has	O
Fire	B-Application
OS	I-Application
6	O
preinstalled	O
,	O
which	O
is	O
based	O
on	O
Android	B-Application
7.1	I-Application
"	I-Application
Nougat	I-Application
"	I-Application
.	O
</s>
<s>
It	O
also	O
includes	O
Alexa	O
Hands-Free	O
and	O
the	O
new	O
"	O
Show	O
Mode	O
"	O
,	O
in	O
which	O
the	O
tablet	B-Device
acts	O
like	O
an	O
Amazon	B-Device
Echo	I-Device
Show	I-Device
.	O
</s>
<s>
The	O
2019	O
model	O
of	O
the	O
Fire	B-Application
HD	I-Application
10	O
(	O
and	O
the	O
2020	O
model	O
of	O
Fire	B-Application
HD	I-Application
8	O
)	O
has	O
Fire	B-Application
OS	I-Application
7	O
preinstalled	O
,	O
which	O
is	O
based	O
on	O
Android	B-Application
9	I-Application
"	I-Application
Pie	I-Application
"	I-Application
.	O
</s>
<s>
The	O
2021	O
model	O
of	O
the	O
Fire	B-Application
HD	I-Application
10	O
/	O
Fire	B-Application
HD	I-Application
10	O
Plus	O
introduced	O
64-bit	B-Device
app	O
support	O
(	O
arm64-v8a	O
Android	B-Application
ABI	O
)	O
for	O
the	O
first	O
time	O
in	O
the	O
Fire	B-Application
HD	I-Application
series	O
.	O
</s>
<s>
Overview	O
on	O
generations	O
and	O
models	O
for	O
all	O
Fire	B-Application
tablet	I-Application
devices	O
:	O
</s>
<s>
Detailed	O
specifications	O
for	O
all	O
Fire	B-Application
HD	I-Application
tagged	O
tablet	B-Device
devices	I-Device
:	O
</s>
<s>
The	O
Model	O
number	O
consists	O
of	O
three	O
parts	O
:	O
first	O
the	O
KF	O
prefix	O
for	O
'	O
Kindle	B-Application
Fire	I-Application
 '	O
,	O
second	O
one	O
or	O
two	O
letters	O
derived	O
from	O
the	O
code	O
name	O
,	O
third	O
WI	O
for	O
Wi-Fi	O
or	O
WA	O
for	O
cellular	O
interface	O
.	O
</s>
