Go into your messaging app on the phone scroll down through the menu. You should see New Message, Inbox, Drafts, Outbox, Sent, Emergency Alerts, Archive, Empty Folder, Voicemail, Templates and Settings. Scroll to Emergency Alerts click Select then click Options next click the one that says Settings. You should now see a screen that says Presidential Alert, Extreme Alert, Severe Alert, AMBER Alert, Repeat Alert, Alerts Preview. Scroll down to the one that says AMBER Alert click OK it will take you where you can select the option of turning AMBER alerts off. You can also stop the other types of alerts as well by going into each one of them and selecting off.
Wireless Emergency Alerts (WEA) can be disabled by sending the word "stop" or "cancel" to 26237 (AMBER). If this does not work, contact your wireless provider for instructions.