Step 1. You need to open the messages application.
Step 2. Now you see the three dots menu icon next to the search button, Tap on that.
Step 3. Now, head to the settings.
Step 4. Find emergency alert history and click on the three-dot button.
Step 5. Tap on settings and find the Amber alerts option.
Step 6. Once you find it, you can turn it off.
Fro More details To tun off in IOS/ Apple Swipe Up