Why Samsung Phones Are Failing Emergency Calls in Australia
1–10 of 18 posts
Re: Why Samsung Phones Are Failing Emergency Calls in Australia
#2Some more discussion: https://news.ycombinator.com/item?id=45981608
Re: Why Samsung Phones Are Failing Emergency Calls in Australia
#3I’m curious whether this is an RRC/IMS stack issue on Samsung’s implementation or something carrier-side in Australia’s 000 routing setup.
Emergency call handling tends to expose edge cases that normal calls never hit. Would be interesting to know if this affects only certain models or firmware branches.
Re: Why Samsung Phones Are Failing Emergency Calls in Australia
#4I’m curious whether this is an RRC/IMS stack issue on Samsung’s implementation or something carrier-side in Australia’s 000 routing setup. Emergency call handling tends to expose edge cases that normal calls never hit. Would be interesting to know if this affects only certain models or firmware branches.
What's the difference with emergency calls? (I know nothing of this.)
Re: Why Samsung Phones Are Failing Emergency Calls in Australia
#5Re: Why Samsung Phones Are Failing Emergency Calls in Australia
#6I’m curious whether this is an RRC/IMS stack issue on Samsung’s implementation or something carrier-side in Australia’s 000 routing setup. Emergency call handling tends to expose edge cases that normal calls never hit. Would be interesting to know if this affects only certain models or firmware branches.
What's the difference with emergency calls? (I know nothing of this.)
Namely the fact that emergency calls can be routed through other networks that aren’t your own (in fact, you can place an emergency call without a SIM).
Re: Why Samsung Phones Are Failing Emergency Calls in Australia
#7on a side related issue , there was much criticism of the 3g shutdown in Australia.
including lack of preparation -
google words - criticism of 3g shutdown in Australia
Re: Why Samsung Phones Are Failing Emergency Calls in Australia
#8I’m curious whether this is an RRC/IMS stack issue on Samsung’s implementation or something carrier-side in Australia’s 000 routing setup. Emergency call handling tends to expose edge cases that normal calls never hit. Would be interesting to know if this affects only certain models or firmware branches.
What's the difference with emergency calls? (I know nothing of this.)
You can also make emergency calls when you don’t have enough signal for regular calls.
It forces it through
Re: Why Samsung Phones Are Failing Emergency Calls in Australia
#9I’m curious whether this is an RRC/IMS stack issue on Samsung’s implementation or something carrier-side in Australia’s 000 routing setup. Emergency call handling tends to expose edge cases that normal calls never hit. Would be interesting to know if this affects only certain models or firmware branches.
> Emergency call handling tends to expose edge cases that normal calls never hit.
Indeed. It now has been revealed even telcos were not doing real world tests https://www.abc.net.au/news/2025-10-08/surprise-drill-for-te... and new laws were passed this month that they must make it possible for an independent university to do testing https://www.acma.gov.au/articles/2025-10/acma-strengthens-in...
Re: Why Samsung Phones Are Failing Emergency Calls in Australia
#10I’m curious whether this is an RRC/IMS stack issue on Samsung’s implementation or something carrier-side in Australia’s 000 routing setup. Emergency call handling tends to expose edge cases that normal calls never hit. Would be interesting to know if this affects only certain models or firmware branches.
What's the difference with emergency calls? (I know nothing of this.)
I don't know how it is with VoLTE and other recent things (it may be the same; it may be different), but at one time in cellular world: Emergency calls differed from other calls in that they Must Always Work.
An emergency call can connect using any tower that is compatible with the caller's hardware -- with or without service provisioned, and with or without any sort of SIM.
Need help, and find a dusty phone somewhere? Turn it on, call emergency services using 0118 999 881 999 119 725 3 [*], and if there's any cell service within range that it is physically capable of chatting with then the call will go through.
It will kick other users off if that's necessary in order to allow the emergency call to happen.
There's nothing to bill, so there's no billing systems (or even billing logic) to get in the way either.
It's intended to always work.