<s>
The	O
Nokia	B-Device
Lumia	I-Device
730	I-Device
is	O
a	O
smartphone	O
developed	O
by	O
Microsoft	O
Mobile	O
and	O
branded	O
as	O
"	O
Nokia	O
"	O
that	O
initially	O
runs	O
Microsoft	O
's	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
operating	O
system	O
.	O
</s>
<s>
It	O
is	O
a	O
successor	O
to	O
the	O
2013	O
Nokia	B-Application
Lumia	I-Application
720	I-Application
and	O
marketed	O
as	O
a	O
selfie	O
phone	O
.	O
</s>
<s>
The	O
Lumia	B-Device
730	I-Device
ships	O
with	O
Microsoft	O
's	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
operating	O
system	O
coupled	O
with	O
the	O
Lumia	O
Denim	O
firmware	O
update	O
.	O
</s>
<s>
It	O
is	O
upgradable	O
to	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
.	O
</s>
<s>
The	O
Lumia	B-Device
730	I-Device
has	O
a	O
Qualcomm	O
Snapdragon	O
400	O
MSM8926	O
SoC	B-Architecture
with	O
a	O
1.2GHz	O
quad-core	O
ARM	B-Application
Cortex-A7	I-Application
CPU	O
and	O
a	O
Qualcomm	B-General_Concept
Adreno	I-General_Concept
305	O
GPU	O
.	O
</s>
<s>
The	O
Lumia	B-Device
730	I-Device
has	O
a	O
6.7MP	O
PureView-branded	O
rear	O
camera	O
,	O
sporting	O
a	O
1/3.4	O
-inch	O
BSI	B-Algorithm
sensor	O
with	O
1.12μm	O
pixels	O
and	O
an	O
Carl	O
Zeiss	O
6-element	O
lens	O
with	O
an	O
f/1.9	O
aperture	O
.	O
</s>
<s>
Many	O
users	O
reported	O
that	O
after	O
upgrading	O
to	O
Windows	B-Operating_System
10	I-Operating_System
,	O
the	O
front	O
camera	O
stopped	O
being	O
able	O
to	O
properly	O
focus	O
at	O
normal	O
distances	O
,	O
only	O
focusing	O
properly	O
at	O
very	O
near	O
distances	O
.	O
</s>
<s>
The	O
problem	O
was	O
not	O
fixed	O
if	O
one	O
downgraded	O
the	O
unit	O
back	O
to	O
Windows	B-Protocol
Phone	I-Protocol
8.1	I-Protocol
.	O
</s>
<s>
Wireless	O
connectivity	O
options	O
include	O
dual-band	O
Wi-Fi	O
802.11a/b/g/n	O
,	O
Wi-Fi	B-Application
hotspot	I-Application
,	O
NFC	O
,	O
Bluetooth	B-Protocol
4.0	O
and	O
wireless	O
screen	O
projection	O
via	O
Miracast	O
.	O
</s>
<s>
Physical	O
connectors	O
include	O
a	O
Micro-USB	O
2.0	O
connector	O
for	O
charging	O
and	O
data	O
transfer	O
,	O
as	O
well	O
as	O
a	O
3.5	O
mm	O
audio	B-Device
jack	I-Device
.	O
</s>
<s>
The	O
Lumia	B-Device
730	I-Device
includes	O
a	O
variety	O
of	O
sensors	O
,	O
including	O
proximity	O
sensor	O
,	O
ambient	O
light	O
sensor	O
,	O
magnetometer	O
,	O
gyroscope	O
and	O
accelerometer	O
,	O
as	O
well	O
as	O
Microsoft	O
's	O
Motion	O
Data	O
activity	B-Device
tracker	I-Device
based	O
on	O
Qualcomm	O
's	O
SensorCore	O
technology	O
.	O
</s>
<s>
Due	O
to	O
chipset	O
limitations	O
,	O
however	O
,	O
it	O
does	O
not	O
support	O
passive	O
voice	O
activation	O
for	O
the	O
Cortana	B-Application
digital	O
assistant	O
.	O
</s>
