<s>
The	O
Danger	O
Hiptop	O
,	O
also	O
re-branded	O
as	O
the	O
T-Mobile	O
Sidekick	O
,	O
Mobiflip	O
and	O
Sharp	O
Jump	O
is	O
a	O
GPRS/EDGE/UMTS	O
smartphone	B-Application
that	O
was	O
produced	O
by	O
Danger	O
,	O
Inc	O
.	O
from	O
2002	O
to	O
2010	O
.	O
</s>
<s>
This	O
included	O
a	O
catalog	O
of	O
downloadable	O
software	O
applications	O
,	O
email	O
hosting	O
,	O
instant	B-Application
messaging	I-Application
,	O
web	O
proxies	O
and	O
a	O
cloud	O
service	O
for	O
the	O
entire	O
personal	O
data	O
on	O
the	O
device	O
.	O
</s>
<s>
On	O
all	O
Hiptops	O
except	O
the	O
original	O
,	O
the	O
left	O
side	O
houses	O
a	O
directional	O
pad	O
and	O
on	O
the	O
right	O
,	O
a	O
track	B-Device
ball	I-Device
(	O
excluding	O
the	O
original	O
Hiptop	O
)	O
The	O
Hiptop	O
2	O
and	O
Slide	O
's	O
directional	O
pad	O
contains	O
internal	O
multicolored	O
LEDs	O
used	O
in	O
ringers	O
and	O
notifications	O
,	O
while	O
the	O
3	O
,	O
2008	O
,	O
LX	O
,	O
and	O
2009	O
track	B-Device
ball	I-Device
contains	O
internal	O
multicolored	O
LEDs	O
that	O
provide	O
the	O
same	O
function	O
.	O
</s>
<s>
The	O
Hiptop	O
line	O
is	O
designed	O
to	O
be	O
held	O
horizontally	O
with	O
both	O
hands	O
,	O
allowing	O
typing	O
with	O
two	O
thumbs	O
,	O
similar	O
to	O
a	O
Game	B-Device
Boy	I-Device
Advance	I-Device
or	O
a	O
console	O
video	O
game	O
controller	O
.	O
</s>
<s>
The	O
discontinuation	O
was	O
mainly	O
because	O
the	O
Hiptop	O
is	O
a	O
competitor	O
to	O
Rogers	O
 '	O
BlackBerry	B-Operating_System
business	O
.	O
</s>
<s>
Hiptop	O
and	O
Palm	O
Treo	O
units	O
(	O
Treo	B-Application
600	I-Application
and	O
later	O
)	O
utilized	O
a	O
transflective	B-General_Concept
liquid	I-General_Concept
crystal	I-General_Concept
display	I-General_Concept
that	O
worked	O
with	O
and	O
without	O
the	O
backlight	O
,	O
making	O
the	O
IM	O
,	O
mail	O
,	O
and	O
all	O
other	O
messages	O
readable	O
even	O
in	O
bright	O
sunlight	O
,	O
and	O
without	O
picking	O
the	O
unit	O
up	O
.	O
</s>
<s>
The	O
Australian	O
version	O
is	O
practically	O
the	O
same	O
as	O
the	O
Sidekick	O
II	O
in	O
the	O
U.S.	O
but	O
re-constructed	O
for	O
the	O
Australian	O
audience	O
it	O
has	O
MSN	B-Protocol
Messenger	I-Protocol
built-in	O
as	O
the	O
default	O
messenger	O
and	O
Yahoo	B-Application
!	O
</s>
<s>
Messenger	O
which	O
is	O
downloadable	O
from	O
the	O
catalog	O
(	O
the	O
US	O
version	O
has	O
Yahoo	B-Application
and	O
AOL	B-Protocol
Instant	I-Protocol
Messenger	I-Protocol
)	O
.	O
</s>
<s>
These	O
are	O
different	O
case	O
colors	O
with	O
the	O
same	O
hardware	O
and	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
The	O
scroll	O
wheel	O
was	O
replaced	O
by	O
a	O
multicolor	O
LED-lit	O
six-direction	O
trackball	B-Device
replacing	O
the	O
D-pad	O
as	O
the	O
indicator	O
light	O
.	O
</s>
<s>
New	O
features	O
were	O
introduced	O
including	O
a	O
removable	O
3.7v	O
1500	O
mAh	O
battery	O
,	O
a	O
miniSD	B-Device
slot	O
capable	O
of	O
up	O
to	O
2GB	O
of	O
flash	O
memory	O
storage	O
,	O
a	O
1.3-megapixel	O
camera	O
capable	O
of	O
1280	O
x	O
1024	O
resolution	O
,	O
an	O
improvement	O
from	O
the	O
sub-megapixel	O
VGA	O
640	O
x	O
480	O
camera	O
,	O
and	O
a	O
built-in	O
1/16	O
"	O
audio	O
jack	O
for	O
the	O
newly	O
included	O
MP3	B-Application
playback	O
software	O
.	O
</s>
<s>
The	O
MiniUSB	O
functionality	O
was	O
changed	O
from	O
allowing	O
access	O
to	O
the	O
Hiptop	O
's	O
internal	O
communications	O
to	O
only	O
allowing	O
access	O
to	O
the	O
MiniSD	B-Device
card	O
over	O
a	O
USB	O
v1.1	O
port	O
.	O
</s>
<s>
The	O
built-in	O
storage	O
allows	O
for	O
end-users	O
to	O
store	O
files	O
for	O
.mp3	B-Application
,	O
.wav	O
,	O
and	O
.aac	O
playback	O
,	O
camera	O
,	O
user	O
customizable	O
themes	O
and	O
other	O
catalog	O
application	O
's	O
uses	O
.	O
</s>
<s>
This	O
included	O
the	O
Sidekick-patented	O
swivel	O
screen	O
,	O
the	O
hidden	O
keyboard	O
,	O
and	O
the	O
trackball	B-Device
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
two	O
color	O
selections	O
,	O
the	O
LX	O
includes	O
a	O
wider	O
,	O
higher-resolution	O
screen	O
,	O
blue	O
LED	O
mood	O
lights	O
on	O
all	O
four	O
corners	O
which	O
coordinate	O
to	O
the	O
user	O
's	O
settings	O
,	O
downloadable	O
music	O
and	O
backgrounds	O
,	O
a	O
lighter	O
weight	O
,	O
MMS	O
messaging	B-Protocol
,	O
and	O
a	O
Micro	B-Device
SD	I-Device
card	I-Device
slot	O
with	O
a	O
128MB	O
card	O
included	O
(	O
over	O
the	O
Sidekick	O
3	O
's	O
64MB	O
MiniSD	B-Device
card	O
)	O
,	O
and	O
an	O
updated	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
Despite	O
production	O
models	O
being	O
made	O
for	O
testing	O
,	O
ultimately	O
the	O
LX	O
was	O
never	O
released	O
in	O
Australia	O
due	O
to	O
a	O
lack	O
of	O
compatibility	O
with	O
Telstra	O
's	O
3G	B-Architecture
850Mhz	O
network	O
,	O
however	O
Telstra	O
went	O
ahead	O
with	O
selling	O
the	O
Slide	O
after	O
the	O
Hiptop3	O
;	O
the	O
Hiptop3	O
is	O
now	O
phased	O
out	O
.	O
</s>
<s>
A	O
Midnight	O
Blue	O
Sidekick	O
LX	O
was	O
featured	O
in	O
the	O
video	O
game	O
Midnight	B-Application
Club	I-Application
:	I-Application
Los	I-Application
Angeles	I-Application
.	O
</s>
<s>
Like	O
the	O
LX	O
,	O
this	O
Sidekick	O
for	O
T-Mobile	O
USA	O
adds	O
the	O
Multimedia	O
Messaging	B-Protocol
application	O
and	O
provides	O
support	O
for	O
T-Mobile	O
MyFaves	O
plans	O
.	O
</s>
<s>
This	O
has	O
improved	O
features	O
such	O
as	O
a	O
high	O
resolution	O
2-megapixel	O
camera	O
and	O
video	O
functionality	O
high	O
quality	O
AIM	B-Protocol
.	O
</s>
<s>
The	O
new	O
handset	O
supports	O
3G	B-Architecture
and	O
HSDPA	O
,	O
and	O
makes	O
various	O
changes	O
to	O
the	O
hardware	O
,	O
including	O
a	O
3.2inch	O
F-WVGA	O
display	O
with	O
854×480	O
resolution	O
and	O
a	O
3.2-megapixel	O
camera	O
with	O
autofocus	O
and	O
flash	O
.	O
</s>
<s>
Support	O
for	O
Facebook	B-Application
,	O
Twitter	B-Application
and	O
MySpace	B-Application
is	O
now	O
native	O
to	O
the	O
system	O
,	O
allowing	O
the	O
handset	O
to	O
pass	O
along	O
notifications	O
in	O
the	O
status	O
bar	O
as	O
it	O
does	O
with	O
instant	B-Application
messaging	I-Application
,	O
e-mail	O
and	O
so	O
forth	O
.	O
</s>
<s>
YouTube	B-General_Concept
streaming	O
playback	O
is	O
also	O
supported	O
on	O
the	O
system	O
through	O
Flash	O
Lite	O
.	O
</s>
<s>
The	O
Sidekick	O
LX	O
2009	O
offered	O
synchronization	O
with	O
Microsoft	B-Application
Outlook	I-Application
and	O
Microsoft	B-Operating_System
Exchange	I-Operating_System
,	O
through	O
a	O
download	O
via	O
the	O
applications	O
catalog	O
.	O
</s>
<s>
The	O
highest-profile	O
addition	O
to	O
the	O
handset	O
was	O
Bing	B-Application
(	O
then	O
called	O
"	O
Live	B-Application
Search	I-Application
"	O
)	O
,	O
was	O
added	O
and	O
integrated	O
with	O
the	O
new	O
GPS	O
functionality	O
;	O
the	O
mapping	O
software	O
previously	O
relied	O
on	O
cell-tower	O
triangulation	O
(	O
a	O
far	O
less	O
accurate	O
process	O
)	O
.	O
</s>
<s>
This	O
modified	O
OS	O
is	O
independent	O
of	O
any	O
backend	O
service	O
,	O
and	O
the	O
original	O
Danger	O
Web	B-Application
browser	I-Application
,	O
Instant	B-Application
Messaging	I-Application
and	O
Email	O
applications	O
have	O
been	O
removed	O
.	O
</s>
<s>
The	O
Web	B-Application
browser	I-Application
was	O
replaced	O
with	O
Opera	B-Protocol
Mini	I-Protocol
whereas	O
the	O
Instant	B-Application
Messaging	I-Application
clients	O
were	O
replaced	O
with	O
one	O
universal	O
client	O
which	O
also	O
allows	O
the	O
user	O
to	O
connect	O
to	O
an	O
IM	O
service	O
through	O
an	O
XMPP	B-Protocol
server	O
.	O
</s>
<s>
The	O
Sharp	O
Jump	O
is	O
different	O
as	O
it	O
is	O
possible	O
to	O
change	O
the	O
network	O
APN	O
,	O
and	O
will	O
work	O
with	O
voice	O
and	O
data	O
anywhere	O
in	O
the	O
world	O
provided	O
the	O
phone	O
is	O
unlocked	O
and	O
a	O
compatible	O
GSM	O
or	O
UMTS	B-Protocol
network	O
is	O
available	O
.	O
</s>
<s>
In	O
April	O
2011	O
,	O
T-Mobile	O
revived	O
the	O
Sidekick	O
brand	O
for	O
a	O
new	O
4G	B-Architecture
HSPA+	O
-compatible	O
Android	B-Application
smartphone	B-Application
developed	O
by	O
Samsung	B-Application
,	O
known	O
as	O
the	O
Sidekick	O
4G	B-Architecture
,	O
based	O
on	O
the	O
Galaxy	B-Application
S	I-Application
.	O
It	O
incorporates	O
features	O
from	O
the	O
original	O
series	O
,	O
including	O
the	O
keyboard	O
,	O
3.2-megapixel	O
camera	O
(	O
minus	O
LED	O
flash	O
)	O
,	O
and	O
the	O
four-button	O
layout	O
,	O
and	O
adds	O
a	O
new	O
Android-powered	O
interface	O
incorporating	O
elements	O
from	O
the	O
Hiptop	O
's	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
The	O
Hiptop	O
operating	B-General_Concept
system	I-General_Concept
,	O
referred	O
to	O
as	O
DangerOS	O
,	O
is	O
one	O
of	O
the	O
only	O
Java-based	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
Even	O
the	O
device	O
drivers	O
were	O
developed	O
in	O
Java	B-Language
.	O
</s>
<s>
A	O
large	O
part	O
of	O
DangerOS	O
's	O
architecture	O
was	O
used	O
later	O
to	O
create	O
the	O
Android	B-Application
operating	I-Application
system	I-Application
.	O
</s>
<s>
For	O
Hiptop	O
development	O
,	O
Danger	O
has	O
its	O
own	O
proprietary	O
APIs	B-Application
,	O
which	O
are	O
a	O
subset	O
of	O
J2SE	O
with	O
their	O
own	O
extensions	O
.	O
</s>
<s>
Danger	O
introduced	O
support	O
for	O
Java	B-Language
ME	I-Language
,	O
the	O
Java	B-Language
language	I-Language
optimized	O
for	O
mobile	O
devices	O
,	O
to	O
its	O
OS	O
with	O
the	O
release	O
of	O
OS	O
2.3	O
.	O
</s>
<s>
Each	O
Sidekick	O
had	O
an	O
IM	O
client	O
(	O
with	O
AIM	B-Protocol
,	O
Yahoo	B-Application
Messenger	I-Application
,	O
and	O
MSN	B-Protocol
Messenger	I-Protocol
)	O
;	O
an	O
Email	O
client	O
with	O
an	O
included	O
T-Mail	O
account	O
;	O
a	O
pre-installed	O
game	O
(	O
Rockets	O
and	O
Rocks	O
or	O
Bob	O
's	O
Journey	O
)	O
;	O
an	O
organizer	O
with	O
planner	O
,	O
a	O
calendar	O
,	O
and	O
calculator	O
;	O
an	O
SMS	O
and	O
phone	O
app	O
;	O
a	O
Download	O
Fun	O
catalog	O
(	O
also	O
called	O
Catalog	O
on	O
Hiptop	O
devices	O
)	O
;	O
and	O
later	O
devices	O
had	O
a	O
variety	O
of	O
social	O
network	O
apps	O
accessed	O
from	O
a	O
section	O
called	O
Communities	O
.	O
</s>
<s>
Devices	O
released	O
in	O
Europe	O
also	O
had	O
a	O
WAP	B-Protocol
browser	I-Protocol
(	O
Wapaka	O
)	O
developed	O
by	O
the	O
French	O
company	O
Digital	O
Airways	O
.	O
</s>
<s>
To	O
aid	O
third-party	O
software	O
design	O
,	O
Danger	O
released	O
a	O
comprehensive	O
software	B-Application
development	I-Application
kit	I-Application
(	O
SDK	O
)	O
that	O
contained	O
a	O
Hiptop	O
simulator	O
,	O
development	O
installation	O
utilities	O
,	O
and	O
Danger	O
API	B-Application
information	O
.	O
</s>
<s>
While	O
DangerOS	O
uses	O
.jar	B-Language
files	O
for	O
applications	O
,	O
they	O
are	O
uploaded	O
to	O
the	O
device	O
in	O
special	O
files	O
called	O
"	O
bundles	O
"	O
.	O
</s>
<s>
Each	O
bundle	O
file	O
is	O
linked	O
to	O
a	O
specific	O
operating	B-General_Concept
system	I-General_Concept
version	O
and	O
build	O
number	O
.	O
</s>
<s>
The	O
Sidekick	O
LX	O
2009	O
model	O
runs	O
DangerOS	O
5.0	O
which	O
is	O
based	O
on	O
NetBSD	B-Device
.	O
</s>
<s>
Lawsuits	O
against	O
Microsoft	O
claim	O
that	O
Microsoft	O
had	O
inadequate	O
backups	O
or	O
an	O
insufficient	O
disaster	B-General_Concept
recovery	I-General_Concept
plan	I-General_Concept
.	O
</s>
<s>
On	O
February	O
28	O
,	O
2011	O
Engadget	B-Application
reported	O
Microsoft	O
would	O
discontinue	O
Danger	O
's	O
cloud	O
service	O
on	O
May	O
31	O
,	O
2011	O
.	O
</s>
<s>
Selected	O
affected	O
customers	O
received	O
a	O
free	O
Samsung	B-Operating_System
Galaxy	I-Operating_System
551	O
to	O
replace	O
their	O
Hiptop	O
devices	O
.	O
</s>
<s>
When	O
the	O
Hiptop/T	O
-Mobile	O
Sidekick	O
was	O
initially	O
released	O
in	O
late	O
2002	O
,	O
it	O
was	O
the	O
only	O
cellular	O
phone	O
to	O
factory	O
integrate	O
an	O
instant	B-Application
messaging	I-Application
client	O
,	O
specifically	O
AOL	B-Protocol
Instant	I-Protocol
Messenger	I-Protocol
.	O
</s>
<s>
Almost	O
immediately	O
it	O
began	O
replacing	O
the	O
dominant	O
wireless	O
devices	O
used	O
by	O
the	O
Deaf	O
at	O
that	O
time	O
,	O
namely	O
the	O
Motorola	O
T-900	O
,	O
PageWriter	O
,	O
and	O
TimePort	O
,	O
as	O
well	O
as	O
the	O
early	O
RIM	O
and	O
BlackBerry	B-Operating_System
e-mail	O
pagers	O
manufactured	O
by	O
Research	O
In	O
Motion	O
.	O
</s>
<s>
The	O
Hiptop/T	O
-Mobile	O
Sidekick	O
's	O
importance	O
to	O
the	O
Deaf	O
was	O
further	O
solidified	O
in	O
March	O
2003	O
when	O
it	O
became	O
the	O
first	O
cellular	O
phone	O
capable	O
of	O
placing	O
unassisted	O
TDD	O
and	O
Relay	O
Operator	O
calls	O
through	O
the	O
phone	O
's	O
web	B-Application
browser	I-Application
using	O
a	O
system	O
developed	O
by	O
Jon	O
B	O
.	O
Sharpe	O
at	O
Lormar	O
Logic	O
Company	O
.	O
</s>
<s>
Lormar	O
Logic	O
enhanced	O
the	O
TDD/Relay	O
Operator	O
system	O
in	O
August	O
2003	O
by	O
developing	O
a	O
means	O
for	O
the	O
deaf	O
to	O
place	O
calls	O
through	O
AOL	B-Protocol
Instant	I-Protocol
Messenger	I-Protocol
.	O
</s>
<s>
MCI	O
Relay	O
followed	O
two	O
months	O
later	O
with	O
a	O
Relay	O
Operator	O
system	O
accessible	O
through	O
telnet	B-Protocol
.	O
</s>
<s>
MCI	O
Relay	O
and	O
Hamilton	O
Relay	O
both	O
released	O
AOL	B-Protocol
Instant	I-Protocol
Messenger	I-Protocol
relay	O
systems	O
in	O
July	O
of	O
the	O
following	O
year	O
.	O
</s>
<s>
By	O
2005	O
,	O
at	O
least	O
four	O
Relay	O
Operator	O
providers	O
(	O
Hamilton	O
,	O
MCI	O
,	O
Sprint	O
,	O
Sorenson	O
,	O
and	O
i711	O
)	O
were	O
providing	O
direct	O
Relay	O
Operator	O
access	O
from	O
the	O
Sidekick	O
using	O
either	O
one	O
of	O
the	O
instant	B-Application
messenger	I-Application
clients	O
or	O
through	O
a	O
free	O
download	O
from	O
the	O
Catalog	O
,	O
and	O
two	O
companies	O
(	O
Lormar	O
Logic	O
and	O
i711	O
)	O
were	O
providing	O
direct	O
TDD	O
access	O
.	O
</s>
