What is ETWS (earthquake and tsunami warning system)?

The Earthquake & Tsunami Warning System (ETWS) was planned essentially for nations with high risk of earthquake & tsunami, tidal waves, flooding, or other outrageous situations in which remote sensors can frequently recognize the precursor to such a disaster and issue alerts. Mobile phone users who got Warning Notification can realize a danger is drawing closer or currently happening close by. ETWS has been normalized in 3GPP and is likewise executed by Japan’s other phone networks, and SoftBank Mobile.