<s>
The	O
Sony	B-Application
Ericsson	I-Application
Xperia	I-Application
X10	I-Application
Mini	I-Application
—	O
also	O
known	O
as	O
the	O
E10i	B-Application
(	O
international	O
)	O
or	O
E10a	O
(	O
Americas	O
)	O
—	O
is	O
a	O
smartphone	B-Application
by	O
Sony	O
Ericsson	O
in	O
the	O
Xperia	B-Device
series	I-Device
.	O
</s>
<s>
It	O
is	O
the	O
second	O
Sony	O
Ericsson	O
smartphone	B-Application
to	O
run	O
the	O
Android	B-Application
operating	I-Application
system	I-Application
,	O
and	O
also	O
one	O
of	O
the	O
smallest	O
Android	B-Application
handsets	O
to	O
date	O
.	O
</s>
<s>
The	O
X10	B-Application
Mini	I-Application
was	O
first	O
revealed	O
on	O
14	O
February	O
2010	O
.	O
</s>
<s>
Apart	O
from	O
the	O
physical	O
dimensions	O
,	O
the	O
phone	O
also	O
differs	O
feature-wise	O
as	O
compared	O
to	O
the	O
X10	B-Application
.	O
</s>
<s>
Text	O
input	O
is	O
done	O
via	O
a	O
virtual	O
keypad	O
on	O
the	O
Mini	O
and	O
a	O
full	O
QWERTY	O
,	O
QWERTZ	B-Language
,	O
or	O
AZERTY	O
slide-out	O
keyboard	O
on	O
the	O
X10	B-Application
Mini	I-Application
pro	I-Application
.	O
</s>
<s>
The	O
Sony	B-Application
Ericsson	I-Application
Xperia	I-Application
X10	I-Application
Mini	I-Application
pro	I-Application
(	O
U20i/U20a	O
)	O
is	O
an	O
upgrade	O
to	O
the	O
X10	B-Application
Mini	I-Application
with	O
many	O
of	O
the	O
internal	O
specifications	O
being	O
identical	O
.	O
</s>
<s>
The	O
major	O
differences	O
between	O
the	O
original	O
X10	B-Application
Mini	I-Application
and	O
X10	B-Application
Mini	I-Application
pro	I-Application
is	O
the	O
replaceable	O
battery	O
,	O
and	O
the	O
pro	O
having	O
slightly	O
larger	O
dimensions	O
(	O
3.5	O
×	O
2.0	O
×	O
0.7inches	O
opposed	O
to	O
3.3	O
×	O
2.0	O
×	O
0.6inches	O
)	O
.	O
</s>
<s>
The	O
X10	B-Application
Mini	I-Application
and	O
X10	B-Application
Mini	I-Application
pro	I-Application
are	O
designed	O
to	O
look	O
similar	O
and	O
share	O
functionality	O
with	O
the	O
larger	O
Xperia	B-Application
X10	I-Application
,	O
but	O
are	O
internally	O
very	O
different	O
devices	O
.	O
</s>
<s>
The	O
X10	B-Application
Mini/Pro	O
(	O
as	O
well	O
as	O
the	O
X10	B-Application
)	O
originally	O
ran	O
Android	B-Application
1.6	I-Application
,	O
with	O
an	O
update	O
to	O
2.1	B-Application
being	O
rolled	O
out	O
from	O
Sunday	O
31	O
October	O
2010	O
,	O
to	O
Tuesday	O
30	O
November	O
2010	O
.	O
</s>
<s>
The	O
updated	O
Xperia	O
X10	O
Mini/Pro	O
is	O
more	O
responsive	O
and	O
faster	O
when	O
compared	O
to	O
older	O
Android	B-Application
version	O
1.6	O
.	O
</s>
<s>
However	O
,	O
Sony	O
Ericsson	O
has	O
no	O
plans	O
to	O
upgrade	O
the	O
2010	O
Xperia	B-Device
phones	O
beyond	O
Android	B-Application
2.1	I-Application
,	O
except	O
the	O
X10	B-Application
that	O
was	O
upgraded	O
to	O
Android	B-Application
2.3	I-Application
.	O
</s>
<s>
Officially	O
,	O
both	O
the	O
X10	B-Application
Mini	I-Application
and	O
X10	B-Application
Mini	I-Application
Pro	I-Application
can	O
not	O
be	O
upgraded	O
beyond	O
Android	B-Application
2.1	I-Application
,	O
although	O
unofficially	O
,	O
ports	O
of	O
CyanogenMod	B-Application
,	O
among	O
others	O
,	O
allow	O
them	O
to	O
be	O
upgraded	O
to	O
2.2	B-Application
,	O
2.3	O
,	O
4.0	B-Application
,	O
and	O
4.1	B-Application
.	O
</s>
<s>
These	O
updates	O
require	O
rooting	B-Application
of	O
the	O
phone	O
(	O
which	O
has	O
warranty	O
implications	O
)	O
and	O
potentially	O
flashing	O
of	O
a	O
third-party	O
kernel	O
.	O
</s>
