Hi, I have an older version of iPhone, (not the 3G), : ) !!! I was using the WeDict dictionary application and then suddenly the iphone blacked out. I turned it back on but it hasn't allowed me to "slide to unlock". I have pressed several times the power and the menu buttons and it doesn't help me to solve this problem. The iphone turns itself back on but it doesn't allow me to "slide to unlock". iTunes does not recognize the iPhone either. I am not writing this thread without having previously looked at other posts. Some of them talk about resetting the phone but I don't know how. Hopefully, I won't loose the dictionary files I installed in previous days. Thank you very much, igmolinav.