<s>
The	O
Nokia	B-Device
Lumia	I-Device
630	I-Device
is	O
a	O
smartphone	B-Application
developed	O
by	O
Microsoft	O
Mobile	O
that	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
has	O
a	O
Qualcomm	O
Snapdragon	O
400	O
SoC	B-Architecture
with	O
a	O
quad-core	O
processor	O
(	O
MSM8226	O
or	O
MSM8626	O
)	O
and	O
Adreno	B-General_Concept
305	O
GPU	O
.	O
</s>
<s>
The	O
Lumia	B-Device
635	I-Device
is	O
similar	O
but	O
4G-compatible	O
,	O
lacks	O
a	O
dual-SIM	O
version	O
and	O
comes	O
in	O
a	O
different	O
finish	O
,	O
while	O
the	O
Lumia	B-Device
636	I-Device
and	O
638	O
are	O
identical	O
,	O
but	O
come	O
with	O
1GB	O
of	O
RAM	B-Architecture
(	O
Only	O
1GB	O
RAM	B-Architecture
models	O
can	O
upgrade	O
to	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
)	O
and	O
are	O
currently	O
available	O
only	O
in	O
China	O
and	O
India	O
respectively	O
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
of	O
the	O
Nokia	B-Application
Lumia	I-Application
625	I-Application
,	O
with	O
an	O
improved	O
quad-core	O
processor	O
,	O
but	O
removes	O
the	O
front-facing	O
camera	O
,	O
flash	O
and	O
dedicated	O
camera	O
button	O
.	O
</s>
<s>
Since	O
the	O
Nokia	O
Lumia	B-Device
630/635	O
,	O
all	O
of	O
the	O
non-PureView	O
Lumia	B-Device
phones	O
have	O
removed	O
the	O
camera	O
buttons	O
.	O
</s>
<s>
On	O
2	O
March	O
2015	O
,	O
Microsoft	O
presented	O
its	O
successor	O
,	O
the	O
Microsoft	B-Application
Lumia	I-Application
640	I-Application
,	O
with	O
improved	O
1280x720	O
HD	O
display	O
,	O
1GB	O
of	O
RAM	B-Architecture
,	O
8MP	O
camera	O
with	O
1080p	O
video	O
recording	O
and	O
LED	O
flash	O
,	O
front-facing	O
camera	O
for	O
selfies	O
and	O
video	O
conference	O
,	O
large	O
2500mAh	O
battery	O
,	O
Office	B-Operating_System
365	I-Operating_System
,	O
Microsoft	B-Application
Outlook	I-Application
and	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
upgrade	O
ability	O
.	O
</s>
<s>
Nokia	O
launched	O
the	O
Nokia	B-Device
Lumia	I-Device
630	I-Device
in	O
India	O
on	O
12	O
May	O
2014	O
,	O
at	O
INR	O
10,500	O
along	O
with	O
a	O
dual-SIM	O
variant	O
priced	O
at	O
INR	O
11	O
,	O
500	O
,	O
both	O
slated	O
to	O
be	O
available	O
from	O
14	O
May	O
2014	O
.	O
</s>
<s>
As	O
of	O
29	O
May	O
2014	O
,	O
Nokia	O
announced	O
that	O
the	O
Lumia	B-Device
630	I-Device
will	O
be	O
available	O
in	O
the	O
United	O
Kingdom	O
at	O
£89.95	O
for	O
the	O
single	O
SIM	O
version	O
only	O
.	O
</s>
<s>
Nokia	O
also	O
launched	O
the	O
Lumia	B-Device
630	I-Device
in	O
the	O
Philippines	O
.	O
</s>
<s>
The	O
Lumia	B-Device
630	I-Device
launched	O
in	O
November	O
2014	O
for	O
the	O
USA	O
market	O
exclusively	O
for	O
Cricket	O
Wireless	O
.	O
</s>
<s>
The	O
Lumia	B-Device
635	I-Device
(	O
AT&T	O
GoPhone	O
Variant	O
)	O
has	O
hardware	O
audio	O
/mic	O
/camera	O
function	O
failure	O
issues	O
after	O
the	O
Lumia	B-Device
Denim	O
or	O
the	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
over-the-air	O
update	O
.	O
</s>
<s>
Some	O
devices	O
do	O
not	O
allow	O
setting	O
Google	B-Application
as	O
default	O
search	O
.	O
</s>
<s>
The	O
Lumia	B-Device
630	I-Device
Dual	I-Device
SIM	I-Device
and	O
Lumia	B-Device
635	I-Device
get	O
very	O
hot	O
when	O
running	O
for	O
extended	O
periods	O
of	O
time	O
,	O
especially	O
when	O
running	O
Internet	O
Explorer	O
.	O
</s>
<s>
The	O
Nokia	B-Device
Lumia	I-Device
636	I-Device
(	O
RM-1027	O
)	O
and	O
638	O
(	O
RM-1010	O
)	O
are	O
1GB	O
RAM	B-Architecture
variants	O
of	O
the	O
Lumia	B-Device
635	I-Device
that	O
were	O
only	O
sold	O
in	O
China	O
,	O
Hong	O
Kong	O
and	O
the	O
Philippines	O
for	O
specific	O
carriers	O
.	O
</s>
<s>
The	O
international	O
version	O
of	O
Lumia	B-Device
638	I-Device
was	O
released	O
but	O
only	O
sold	O
in	O
India	O
exclusively	O
through	O
the	O
Microsoft	O
Brand	O
Store	O
at	O
Amazon.in	B-Application
since	O
December	O
2014	O
and	O
is	O
at	O
present	O
the	O
cheapest	O
4G	B-Architecture
smartphone	B-Application
in	O
the	O
country	O
.	O
</s>
<s>
Lumia	B-Device
630	I-Device
TV	O
Edition	O
(	O
RM-979	O
)	O
is	O
a	O
Lumia	B-Device
630	I-Device
Dual	I-Device
SIM	I-Device
variant	O
with	O
a	O
built-in	O
ISDB-Tb	B-Application
receiver	O
which	O
is	O
exclusively	O
sold	O
in	O
Brazil	O
.	O
</s>
<s>
The	O
smartphone	B-Application
has	O
a	O
changeable	O
shell	O
:	O
bright	O
orange	O
,	O
bright	O
green	O
,	O
bright	O
yellow	O
,	O
matte	O
black	O
,	O
white	O
.	O
</s>
