Police warn Android phone users over 999 call feature
bbc.co.uk
bbc.co.uk
[1] - https://www.youtube.com/watch?v=5m6qutSER9Q [video][1 min]
They are probably set up to special-case 911 alone for phones with no service/SIM, and getting them to accept a second number is an entire new set of legal and contract arguments.
If you don't have a SIM than it's more complicated because the phone needs to register somehow in the network and, probably, indicate what it's trying to call an emergency number (so the network would allow both the registration and the call to occur).
But my $10 on the dialer app just decline it.
One time, I mashed the power button trying to see if it would fix the problem, and I ended up reaching the emergency number. Followed procedure and told them it was my butt that dialed them...
It's kind of amazing we're still dealing with these problems 25 years later.
I wonder how many people actually use this feature for its intended purpose, and how many of those would not be able to just dial the emergency number. Just dialling "999" (or "112", "911" – many of these work in most countries) seems a lot easier than trying to think of what the shortcut you never use is.