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by mcpherrinm15 hours ago |
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upvoteby OptionOfT13 hours ago|
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The only way to truly disable 2g on an iPhone is to enable lock-down mode, which is a step too far for me.
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upvoteby xamuel12 hours ago|
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Agree. I do a lot of travel and in 3rd-world countries it is quite common to get 2g spam, it's really unacceptable that Apple doesn't offer a way to turn off 2g short of lockdown mode.
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upvoteby lxgr2 hours ago|
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Are you sure it's not sourced from the visited network? In that case, 3G or beyond wouldn't help you, as mutual authentication does not imply end-to-end authentication of all traffic between you and your home provider.
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upvoteby lostmsu1 hours ago|
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At least Pixels have the setting to disable 2G, which is on by default.
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upvoteby akimbostrawman7 hours ago|
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It's always amusing to me how apple tries to hide basic security features behind there super duper totally secure mode which nobody will enable because it destroys usability.

Meanwhile GrapheneOS in the default mode is as much or much more secure (and private duh) than there marketing mode with little to no usability decrease.

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upvoteby mayhemducks18 minutes ago|
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I was curious about this so I looked around a bit. My interpretation is that GrapheneOS still has not cracked this nut. Neither has iPhone, unless you enable "Lockdown Mode"

https://github.com/GrapheneOS/os-issue-tracker/issues/3952 https://github.com/GrapheneOS/os-issue-tracker/issues/6076

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upvoteby opengrass15 hours ago|
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Plausible. Only Rogers still has working 2G.
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upvoteby mcpherrinm15 hours ago|
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It doesn't matter what the network is doing; the phone needs to disable 2g. There's various ways to get the phone to downgrade to 2g otherwise, eg https://montsecure.com/files/2021_downgrade.pdf

Android has it as a toggle: https://source.android.com/docs/security/features/cellular-s...

iPhone disables it for phones in lockdown mode.

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upvoteby Scoundreller15 hours ago|
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And if you have a modern enough SIM+phone combo, it won’t even display the 2g network as an available network, nor 3G on my device.

I wonder if this mostly hit international SIMs, since they wouldn’t be running the same level of SIM code to prefer various network locks like a local SIM.

Helps you stay under the radar and gov services over SMS is a lot more advanced outside of Canada if you want to do some fraud.

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upvoteby gruez13 hours ago|
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>And if you have a modern enough SIM+phone combo, it won’t even display the 2g network as an available network, nor 3G on my device.

Source? It might just be that your carrier retired its 2g/3g network, not that the phone/sim refuses 2g/3g connections. If some cell tower popped up claiming to 2g/3g, your phone still might happily connect.

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upvoteby Scoundreller11 hours ago|
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source = Rogers SIM in me phone

my Telus/Bell SIM shows the 3G network tho

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upvoteby lxgr1 hours ago|
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Unfortunately, I think there's no way for a SIM card to indicate to the phone that it would like it to please never connect to any 2G (or any non-mutually-authenticated) network.

Absent that, maybe this happens via a carrier profile (or equivalent mechanism)?

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upvoteby stephen_g8 hours ago|
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That's incredible, here in Australia they not only shut down all 2G networks almost a decade ago, but they've already shut down 3G as well!

Although now looking at Wikipedia there are a lot more 2G networks sticking around than I realised, still hard for me to believe given what's happened here!

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upvoteby wil4213 hours ago|
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You do realize it’s a fake 2g/3g network and most phones don’t care. They will happily connect to whatever they support.
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upvoteby lxgr2 hours ago|
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Only if they’re not already connected to a better network, no?
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upvoteby llm_nerd13 hours ago|
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Which is interesting in that they very publicly shut down the 3G network last year.
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