Sony Ericsson Xperia Arc S

Hey guys!
I have an opportunity to get the Xperia Arc S but the European version. Do you know whether the hardware and software works with American networks? I have AT&T so I have a sim card, but in the past I have had problems with internet reception.

Thanks!

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To know details about Sony Ericsson Xperia Arc S, please visit the following website
Sony Ericsson Xperia Arc S - Full phone specifications
http://www.techradar.com/.../sony-er...ia-arc-s.../re...
Engadget...
Sony Ericsson Xperia arc S - hands on (incl. Xperia Facebook Inside Upgrade) - YouTube