<s>
The	O
HTC	B-Application
ThunderBolt	I-Application
(	O
ADR6400L	B-Application
)	O
was	O
the	O
first	O
4G	O
LTE	O
smartphone	B-Application
on	O
the	O
Verizon	B-Application
Wireless	I-Application
network	O
.	O
</s>
<s>
It	O
is	O
a	O
CDMA/LTE	O
variant	O
of	O
the	O
HTC	B-Application
Desire	I-Application
HD	I-Application
.	O
</s>
<s>
In	O
addition	O
to	O
4G	O
service	O
,	O
the	O
ThunderBolt	O
is	O
the	O
first	O
Verizon	B-Application
phone	O
to	O
support	O
simultaneous	O
voice/data	O
over	O
3G	O
without	O
the	O
help	O
of	O
Wi-Fi	O
.	O
</s>
<s>
However	O
,	O
despite	O
early	O
demand	O
for	O
the	O
phone	O
,	O
HTC	B-Application
has	O
appeared	O
to	O
struggle	O
in	O
their	O
attempts	O
to	O
address	O
multiple	O
complaints	O
about	O
the	O
device	O
.	O
</s>
<s>
Common	O
reported	O
issues	O
include	O
complaints	O
of	O
short	O
battery	O
life	O
,	O
frequent	O
rebooting	O
,	O
and	O
a	O
much	O
delayed	O
and	O
troubled	O
rollout	O
of	O
an	O
update	O
to	O
the	O
Android	B-Application
Gingerbread	I-Application
platform	O
.	O
</s>
<s>
The	O
ThunderBolt	O
has	O
a	O
second	O
generation	O
1GHz	O
Snapdragon	B-Architecture
processor	O
manufactured	O
by	O
Qualcomm	O
,	O
and	O
runs	O
on	O
Verizon	B-Application
's	O
4G	O
LTE	O
Network	O
.	O
</s>
<s>
It	O
has	O
a	O
4.3-inch	O
class	O
(	O
480×800	O
)	O
WVGA	O
TFT	O
capacitive	O
touchscreen	B-Device
covered	O
by	O
Gorilla	O
Glass	O
,	O
a	O
special	O
crack	O
and	O
scratch	O
resistant	O
material	O
made	O
by	O
Corning	O
.	O
</s>
<s>
An	O
external	O
microSDHC	B-Device
card	I-Device
slot	O
supports	O
up	O
to	O
32	O
GB	O
more	O
storage	O
memory	O
,	O
which	O
comes	O
preinstalled	O
.	O
</s>
<s>
The	O
ThunderBolt	O
shipped	O
with	O
Android	B-Application
2.2	O
(	O
Froyo	O
)	O
and	O
it	O
was	O
later	O
updated	O
in	O
September	O
2011	O
to	O
Android	B-Application
2.3	I-Application
(	O
Gingerbread	B-Application
)	O
.	O
</s>
<s>
In	O
early	O
February	O
2013	O
,	O
the	O
ThunderBolt	O
was	O
updated	O
to	O
Android	B-Application
4.0.4	O
(	O
Ice	O
Cream	O
Sandwich	O
)	O
and	O
Sense	O
3.6	O
.	O
</s>
<s>
The	O
4.0.4	O
update	O
brought	O
many	O
new	O
features	O
to	O
the	O
Thunderbolt	O
,	O
including	O
new	O
camera	O
filters	O
and	O
features	O
,	O
the	O
ability	O
to	O
capture	O
screenshots	B-Application
,	O
and	O
facial	O
recognition	O
to	O
unlock	O
the	O
device	O
.	O
</s>
<s>
Connectivity	O
issues	O
were	O
the	O
reason	O
why	O
HTC	B-Application
and	O
Verizon	B-Application
Wireless	I-Application
did	O
not	O
immediately	O
release	O
the	O
4.0.4	O
update	O
.	O
</s>
