system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:How come 911 works when there is no cell phone service due to being in a remote area.
gpt
"No service" on your phone actually means:

"There is no signal from a carrier that recognizes that you have an active, billable account allowed to make calls."

However, since an active, billable account isn't required to make a 911 call, you can make a 911 call from a cell phone as long as there is any provider in range who has the technical ability to receive your phone's signal.