FLASH APP: FLASH NOTIFICATIONS, FLASH ALERT FOR INCOMING CALL & SMS. FLASHLIGHT APP FOR PHONE The flash lights up & flashes when the phone receives a notification or receives a call. Flashlight: Led Flashlight is the best notification flash app for Android phones. Blinking the lights when an incoming call is useful when you are in a dark place or in a meeting where you do not want to hear ringtones or vibrations. Imagine you are at a loud music party or at night where you can't hear the ringto