I have long web page title and when adding to home screen in iPhone older versions the whole title is visible in the confirmation dialog. When I add to home screen in iPhone 4 t
You can change the title for iOS devices as woodleader has answered but this will change it in normal mobile safari. Only the user can change the title of the webapp. It's not possible to do it with meta tags or programmatically. So you just need to choose a shorter title or leave it up to the user, who will likely change it, if it is too long.