Google tapped billions of mobile phones to detect earthquakes worldwide

The only image in the article shows the Turkey 2023 quake damage, BUT:

"Google alert failed to warn people of Turkey earthquake" https://news.ycombinator.com/item?id=36896423 July 2023

> "Despite extensive reporting across the earthquake zone in the hours, days and weeks after the quake, no-one mentioned getting an alert to the BBC. So we began to search specifically for people who had got the warning. Our team travelled to Adana, Iskenderun and Osmaniye, cities between 70km (43 miles) and 150km (93 miles) away from the epicentre. We spoke to hundreds of people with Android phones. Although we managed to find a small number of people who had got an alert for the second earthquake, we couldn't find anyone who got a warning ahead of the first, most powerful quake."