like there should be a workaround/hack that then let’s you place any kinda call for free.
In: 3640
A lot of folks have answered the thing about SIM, but there’s even more magic to emergency calling.
Normally your phone stays on certain radio bands assigned to your carrier. It may try to roam off only to networks that your carrier has agreements with, this stuff is programmed into your SIM with something like a priority list. When your phone sees that you’ve dialed an emergency number (which are a pretty limited list of numbers per country) the modem goes into a mode where it scans every possible band trying to find a network. It also relaxes power-saving requirements that prevent attaching yo networks with poor signal reception.
In the network side, if they see an emergency call, the tower will clear out channel space and power headroom for it, potentially moving or booting non-emergency traffic.
Two important ELI5 takeaways:
* In an emergency **always always always** dial 911 even if your phone says No Service. No Service means you can’t get TikTok, emergency operates on a much higher priority pane
* People that dial 911 for improper reasons need to be better. Doing so consumes a huge amount of resources and displaces other customers.
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