Bought the Smartphon for my wife. Is her first phone of its kind. Kam but equally very well with it as very easy to use. In some applications, the screen responds very slowly, the "push / pull function" must be repeated several times in still others. Big annoyance is the battery. After only a few hours without any application he goes to "zero" and the Smartphon turns off completely. The 100% -Aufladung then goes though relatively quickly, but the games then repeated again. Really annoying! We try a new battery. We'll see the result.