Filed under: CellphonesWe won't embarrass you by asking when the last time you read a book was, but we know good and well you'll be fixated on this here PDF. As the run-up to the long-awaited release of Sony Ericsson's XPERIA X1 continues, the outfit has been kind enough to post up the official 26-page user guide for all to see. Granted, you pretty much know everything that's in there, but if you're looking to hone your battery changing skills before taking possession of one, the appropriate documentation is just a click away.