Hi!!! I have a Kyocera Hydro with Boost Mobile and today, I don't know how, the screen changed to the emergency call screen and can't get rid of it!!! I have tried turning off and on the phone, as well as taking the battery off and putting it back on. NOTHING WORKS. Always brings me back to that screen. It doesn't say anything about the SIM card, so I don't think that is the problem. It also doesn't involve any PIN numbers apparently.