Hi there, I'm from the UK. Today it was announced that on the 23rd of April the government will be testing the emergency broadcast system and that our phones will be unable to perform other actions other than making an alarming sound until we acknowledge the message.
I went to disable this in settings but was met with a message underneath the toggle to disable WEA (wireless emergency alerts) claiming that, "National warning messages issued by the President. Can't be turned off". After speaking to some other people we've discovered that this is most likely left over from the AOSP on certain languages such as English UK; those using a US language pack do not see this message. Unfortunately I am unable to verify whether this is true or not. Consequently I decided to uninstall "com.android.cellbroadcastreceiver.module" using ADB due to the confusion. I am now told that this has made my device insecure because I've made changes using ADB. I am unsure how to reinstall this package and revert my changes to secure my device. Any help and information regarding the matter would be much appreciated. Thank you.