“广州震感”冲上热搜第一，手机地震预警功能如何打开？

Core Insights - The majority of smartphones sold in China are equipped with earthquake early warning features, which have gained attention following recent seismic events [1][3] Group 1: Earthquake Early Warning Features - Most smartphones in China have built-in earthquake early warning functions, with Android devices providing full-screen alerts and vibrations even in lock screen mode [1] - The earthquake warning system is primarily provided through collaboration between third-party monitoring agencies and smartphone manufacturers [3] - Apple devices require third-party apps or mini-programs to access earthquake warning features, necessitating user setup for location and notifications [4] Group 2: User Engagement and Response - During the recent earthquake in Guangzhou, approximately 502,000 WeChat users received alerts from the "China Earthquake Early Warning" mini-program about 10 seconds before the tremors reached them [4] - The early warning system can provide alerts seconds to minutes before the earthquake hits, allowing users to take precautionary measures [4] Group 3: Safety Recommendations - Recommendations for public safety include taking cover near sturdy objects for alerts received within 3 seconds, evacuating to the outside for alerts received within 10 seconds, and seeking shelter for higher floors if warned within 20 seconds [5]