Will emergency alerts interrupt or end a voice-call or another activity in progress?
Emergency alerts will not end a voice call or data session in progress. If you are on a
call when the emergency alert is received, you will hear an alert tone, similar to call waiting. The alert will be displayed on your device, after your call has ended. If you are on a call while connected to the 3G network, you will not receive the alert while you are on the call. You will receive the emergency alert after your call has ended, if it the alert is still active and your device is connected to the LTE network. If you are using data, the emergency alert will briefly interrupt your data session by the emergency alert appearing on your screen, but your data session will continue.