<s>
The	O
Meizu	B-Application
MX4	I-Application
Ubuntu	I-Application
Edition	I-Application
is	O
a	O
smartphone	B-Application
designed	O
and	O
produced	O
by	O
the	O
Chinese	O
manufacturer	O
Meizu	O
,	O
which	O
runs	O
on	O
Ubuntu	B-Protocol
Touch	I-Protocol
.	O
</s>
<s>
It	O
is	O
a	O
previous	O
phablet	B-Application
model	O
of	O
the	O
MX	O
series	O
,	O
representing	O
an	O
alternative	O
edition	O
of	O
the	O
MX4	B-Application
.	O
</s>
<s>
It	O
is	O
Meizu	O
's	O
first	O
commercially	O
available	O
Ubuntu	B-Protocol
Touch	I-Protocol
device	O
and	O
the	O
second	O
commercially	O
available	O
phone	O
with	O
Ubuntu	B-Protocol
Touch	I-Protocol
overall	O
.	O
</s>
<s>
In	O
November	O
2014	O
,	O
Meizu	O
and	O
Canonical	O
signed	O
a	O
cooperation	O
agreement	O
,	O
which	O
set	O
the	O
starting	O
point	O
for	O
Meizu	O
to	O
release	O
devices	O
running	O
on	O
Ubuntu	B-Protocol
Touch	I-Protocol
.	O
</s>
<s>
In	O
February	O
2015	O
,	O
Meizu	O
confirmed	O
that	O
there	O
will	O
be	O
an	O
Ubuntu	O
Touch-based	O
version	O
of	O
the	O
Meizu	B-Application
MX4	I-Application
and	O
that	O
it	O
will	O
be	O
showcased	O
at	O
Mobile	O
World	O
Congress	O
2015	O
.	O
</s>
<s>
At	O
the	O
Mobile	O
World	O
Congress	O
in	O
March	O
2015	O
,	O
Meizu	O
has	O
presented	O
the	O
Meizu	B-Application
MX4	I-Application
Ubuntu	I-Application
Edition	I-Application
,	O
which	O
is	O
an	O
alternative	O
version	O
of	O
the	O
MX4	B-Application
running	O
on	O
Ubuntu	B-Protocol
Touch	I-Protocol
,	O
becoming	O
the	O
second	O
commercially	O
available	O
device	O
on	O
this	O
platform	O
.	O
</s>
<s>
The	O
Meizu	B-Application
MX4	I-Application
Ubuntu	I-Application
Edition	I-Application
was	O
released	O
through	O
an	O
invite-only	O
system	O
on	O
the	O
European	O
market	O
on	O
June	O
25	O
,	O
2015	O
.	O
</s>
<s>
The	O
MX4	B-Application
Ubuntu	B-Operating_System
Edition	O
is	O
running	O
Ubuntu	B-Protocol
Touch	I-Protocol
,	O
which	O
is	O
a	O
mobile	O
operating	O
system	O
based	O
on	O
the	O
Ubuntu	B-Operating_System
linux	I-Operating_System
distribution	I-Operating_System
developed	O
by	O
Canonical	O
.	O
</s>
<s>
The	O
technical	O
specifications	O
and	O
outer	O
appearance	O
of	O
the	O
MX4	B-Application
Ubuntu	B-Operating_System
Edition	O
is	O
identical	O
with	O
the	O
Meizu	B-Application
MX4	I-Application
.	O
</s>
<s>
The	O
Meizu	B-Application
MX4	I-Application
Ubuntu	I-Application
Edition	I-Application
features	O
a	O
MediaTek	O
MT6595	O
system-on-a-chip	B-Architecture
with	O
an	O
array	O
of	O
four	O
ARM	B-Application
Cortex-A17	I-Application
and	O
four	O
Cortex-A7	B-Application
CPU	B-General_Concept
cores	O
,	O
a	O
PowerVR	B-Device
G6200	O
GPU	B-Architecture
and	O
3	O
GB	O
of	O
RAM	B-Architecture
.	O
</s>
<s>
The	O
MX4	B-Application
Ubuntu	B-Operating_System
Edition	O
is	O
only	O
available	O
in	O
with	O
16	O
GB	O
of	O
internal	O
storage	O
and	O
with	O
a	O
champagne	O
gold	O
body	O
.	O
</s>
<s>
The	O
body	O
of	O
the	O
MX4	B-Application
Ubuntu	B-Operating_System
Edition	O
features	O
a	O
metal	O
frame	O
and	O
measures	O
x	O
x	O
and	O
weighs	O
.	O
</s>
<s>
The	O
MX4	B-Application
Ubuntu	B-Operating_System
Edition	O
features	O
a	O
5.36-inch	O
AMOLED	B-Algorithm
multi-touch	B-Application
capacitive	O
touchscreen	O
display	O
with	O
a	O
FHD	O
resolution	O
of	O
1152	O
by	O
1920	O
pixels	B-Algorithm
.	O
</s>
<s>
The	O
pixel	B-Algorithm
density	I-Algorithm
of	O
the	O
display	O
is	O
403	O
ppi	B-Algorithm
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
touchscreen	O
input	O
and	O
the	O
front	O
key	O
,	O
the	O
device	O
has	O
volume/zoom	O
control	O
buttons	O
and	O
the	O
power/lock	O
button	O
on	O
the	O
right	O
side	O
,	O
a	O
3.5mm	O
TRS	B-Device
audio	I-Device
jack	I-Device
on	O
the	O
top	O
and	O
a	O
microUSB	O
(	O
Micro-B	O
type	O
)	O
port	O
on	O
the	O
bottom	O
for	O
charging	O
and	O
connectivity	O
.	O
</s>
<s>
The	O
Meizu	B-Application
MX4	I-Application
Ubuntu	I-Application
Edition	I-Application
has	O
two	O
cameras	O
.	O
</s>
<s>
The	O
rear	O
camera	O
has	O
a	O
resolution	O
of	O
20.7	O
MP	O
,	O
a	O
ƒ/2.2	O
aperture	B-General_Concept
,	O
a	O
5-element	O
lens	O
,	O
laser-aided	O
phase-detection	O
autofocus	O
and	O
an	O
LED	O
flash	O
.	O
</s>
<s>
The	O
front	O
camera	O
has	O
a	O
resolution	O
of	O
2	O
MP	O
,	O
a	O
ƒ/2.0	O
aperture	B-General_Concept
and	O
a	O
4-element	O
lens	O
.	O
</s>
<s>
The	O
MX4	B-Application
Ubuntu	B-Operating_System
Edition	O
received	O
generally	O
positive	O
reviews	O
.	O
</s>
<s>
ZDNet	O
gave	O
the	O
MX4	B-Application
a	O
rating	O
of	O
8.0	O
out	O
of	O
10	O
possible	O
points	O
and	O
mentioned	O
that	O
“	O
the	O
Meizu	B-Application
MX4	I-Application
Ubuntu	I-Application
Edition	I-Application
offers	O
a	O
number	O
of	O
high-end	O
hardware	O
features	O
at	O
relatively	O
low	O
cost	O
”	O
.	O
</s>
<s>
TechRadar	O
stated	O
that	O
“	O
Ubuntu	B-Protocol
Phone	I-Protocol
has	O
plenty	O
of	O
potential	O
”	O
and	O
praised	O
the	O
build	O
quality	O
,	O
design	O
and	O
powerful	O
specifications	O
of	O
the	O
device	O
.	O
</s>
