In case of emergency (ICE) is a program that enables 1st responders to identify victims and contact next of kin in case of an emergency. Hence the acronym ICE. All cellphones should have one or more ICE listings should the unfortunate happen.
That said, cellphones and particularly smart phones have password protection mechanism where your phone, ICE and all other information cannot be accessed without keying a password or drawing a pattern to unlock all of this. What I am trying to get at here is if your phone is password protected, ICE is not able to be accessed. Please have an alternate form of identification that lists an emergency contact(s). Don't feel a false sense of security having ICE on your phone where there is password protection enabled.