[yellowapple]

One example that comes to mind even here in the US would be getting emergency info out (evacuation orders, contact info, etc.) during natural disasters like wildfires and storms. A lot of rural areas are still stuck with dial-up and low-bandwidth cellular data at best, so every kilobyte matters. This also applies even in places with abundant cellular coverage; congestion can and often does cause issues with thousands or millions of people trying to get info or reach out to emergency contacts all at once.

Min's rationale further brings to mind things like disseminating info on hospitals, shelters, etc. in war zones, often to people who at most have an ancient (by first-world standards) phone with expensive and slow network connectivity.