The new Sony Ericsson Xperia Arc S is a large 4.2-inch multi-touch display smartphone powered by a powerful 1.4GHz processor . It is running the Android OS and is very slim and sleek mobile supporting 3D and 2D sweep panorama photography . It is the successor of the stylish Sony Ericsson Xperia Arc mobile with more powerful processor and a Exmor R sensor that includes a "3D sweep panorama" .