Turn off emergency alert is one of security measure

https://jghuff.com/blog/modem/

https://thehackernews.com/2018/03/4g-lte-network-hacking.html?m=1

https://www.zdnet.com/article/new-lte-attacks-eavesdrop-on-messages-track-locations-spoof-alerts/

LTE had been hacked and controlled phone setting