There are many different ones, depending on your phone.
No,sony ericsson xperia play is better.
Sony Xperia X10 of course!!
The Sony Ericsson Xperia X1 was the first Xperia phone, and was released in 2008.
sony ericsson xperia x10
Sony Ericsson Xperia Arc was created in 2011.
Sony Ericsson Xperia pro was created in 2011.
Sony Ericsson Xperia ray was created in 2011.
Sony Ericsson Xperia acro was created in 2011.
Sony Ericsson Xperia neo was created in 2011.
Get the unique unlock code for your phone and the unlocking instructions from the Sony-Ericsson website.
Sony ericsson xperia x10 by two miles
Sony Ericsson Xperia Play was created on 2011-04-01.