I've done a search but can't find anything. How do I switch my passcode lock off? It was off before and I tried to set up my corporate email onto the iphone and its changed the setting to passcode lock on. I've deleted the corporate email account but I can't find an option anywhere to switch the passcode lock off? When I go into passcode lock my only options are: change passcode, require passcode [time] and show sms preview. Anyone able to help? I know this happened to my blackberry where my corporate email applied a security setting to it and I had to enter an email to unlock the phone each time but since I've deleted the corporate email account on the iphone I was hoping this would go away.