Since yesterday my android zte blade stuck. Suddenly a siren sound and a white screen shows up says Phone hase been locked. and do not allow meto do anything. To give more information about the problem , i reboot my phone , reset , and remove the battery but nothing worked. When i reboot my phone it starts loading the apps and after some seconds it loads this screen. None of the buttons works when this screen is on , but the home.When i press the home it is actually works and show me home but afterw 3 sec it shows the white screen again. I cant answer to received calls because this screen wont go off so i cant press answer or dial or anything else.If i go to home and press an app to execute it shows up imediately this screen shorter than than the 3 sec , that is needed , if you dont touch anything. I search the internet but found nothing relative.I think i ta could be some kind of virus but please help me.