<s>
The	O
BlackBerry	B-Operating_System
Electron	I-Operating_System
(	O
8703/8700/8707	O
)	O
is	O
a	O
series	O
of	O
discontinued	O
BlackBerry	B-Operating_System
smart	O
phone	O
developed	O
by	O
Research	O
In	O
Motion	O
Ltd	O
and	O
released	O
in	O
2005	O
.	O
</s>
<s>
The	O
Blackberry	B-Operating_System
Electron	I-Operating_System
was	O
announced	O
in	O
Q4	O
of	O
2004	O
.	O
</s>
<s>
Most	O
of	O
the	O
materials	O
that	O
make	O
up	O
the	O
BlackBerry	B-Operating_System
Electron	I-Operating_System
and	O
other	O
BlackBerry	B-Operating_System
devices	O
,	O
such	O
as	O
flexible	O
circuit	O
boards	O
,	O
were	O
manufactured	O
in	O
China	O
.	O
</s>
<s>
The	O
interface	O
of	O
the	O
BlackBerry	B-Operating_System
Electron	I-Operating_System
is	O
graphical	O
and	O
uses	O
menus	O
and	O
icons	O
for	O
navigation	O
.	O
</s>
<s>
All	O
8700	O
series	O
phones	O
come	O
with	O
MP3	B-Application
ringtone	O
support	O
.	O
</s>
<s>
The	O
3	O
versions	O
of	O
the	O
Electron	O
differed	O
in	O
network	O
support	O
the	O
original	O
(	O
8700	O
)	O
model	O
supported	O
Quad-band	O
GSM	O
(	O
EDGE/GPRS	O
)	O
.	O
</s>
<s>
The	O
8707	O
(	O
AKA	O
"	O
UMTS	O
Electron	O
"	O
)	O
added	O
2100MHz	O
UMTS	O
3G	O
and	O
the	O
8703	O
model	O
was	O
designed	O
for	O
US	O
CDMA	B-Protocol
operators	O
and	O
supported	O
both	O
850MHz	O
and	O
1900MHz	O
CDMA2K	O
(	O
EvDO/1xRTT	O
)	O
the	O
8703	O
also	O
has	O
A-GPS	O
support	O
,	O
which	O
was	O
not	O
present	O
on	O
the	O
GSM/UMTS	O
variants	O
.	O
</s>
<s>
All	O
variants	O
have	O
Bluetooth	B-Protocol
,	O
and	O
USB	B-Protocol
facilities	O
.	O
</s>
