Hi there, both me and my sister in law had an iPhone 4 but she received a replacement as she dropped hers down the loo.. I've noticed it has a different screen where you put your Passcode in and it looks like you can have unlimited characters as the Passcode. Also it features an 'OK' button to the right of the Passcode entry window. Both of our phones are running 5.1 (up to date) and I can't figure out why hers is different. Any ideas? I haven't seen a 4S but it just says iPhone on the back. I know it doesn't really matter but it's just bugging me lol.
Thanks
Thanks