Well, My cousin logged in with his iPhone account on my iPhone... I downloaded something with his account.. When I got home my iPhone ran out of battery. I plugged the charger in when I got home.. I opened it, and it started downloading the app again. When it finished, I couldn't go on it (the app). It said I needed my cousin's pass again...I uninstalled the thing... went back to the app store but it said I was still on my cousin's account! All I need was the password. But I don't know it.. I don't know how to sign out of his account... I have my own iTunes account but now, I can't go on it... Can anybody help me?, Please and Thank you!