haha...day 17 using e51..superb..never hang.'wi-fi'ing smoothly.fast.3g is superb.no problem with video call(except that it doesn't have a front camera.hahaha..sound also superb!also had install few games.never hang and running smoothly.just..battery can't last as long as 3 day.hahaha.(a lot of games and 'wi-fi'ing involve!hahaha).