The Sony Ericsson Xperia arc S (Xperia LT18i) is a high-end smartphone[1] developed by Sony Ericsson running Google's operating system Android 2.3.4 (Gingerbread).

Unveiled on 31 August 2011 at Sony's press conference in conjunction with IFA in Berlin, Germany[3][4] and scheduled for release in October,[4][5] it was released in October 2011.

[6] The Xperia arc S, along the Xperia Mini Pro, would not be receiving an Android 4.1 Jelly Bean update,[7] as Sony Mobile Communications officially confirmed via their Facebook page on 26 July 2012.

The Arc S features a capacitive touchscreen display of 4.2 inches and is equipped with an 8.1-megapixel camera with Exmor R for low-light capture.

It comes in several colours: "Pure White", "Midnight Blue", "Misty Silver", "Gloss Black", "Sakura Pink".