I don't have an S5, but go to Settings/Lock Screen (wherever they put it in the S5) and see if there's a setting for that. If you, you'll have to install a 3rd party lock screen or change your lock screen to PIN or password or something else that might change it.
iPhones work one way - the way Apple makes them. Part of the reason people buy Androids is to experiment and set the phone up the way that suits them best.