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I think it's restricted to the baseband, but I'm not an expert. Fun fact: SIM cards actually have a flag which tells the handset to display a warning to the use
by WillKirkby 12y ago
I think it's restricted to the baseband, but I'm not an expert. Fun fact: SIM cards actually have a flag which tells the handset to display a warning to the user if they are using an unencrypted connection. Basically no commercial SIM cards have this flag enabled.
Source: https://www.youtube.com/watch?v=xKihq1fClQg https://www.youtube.com/watch?v=xKihq1fClQg
- BuildTheRobots 12y agoI believe you have to enable a bit to _disable_ the warning (eg, it should be there as default). On my own network with my own sim cards, I've yet to find a modern handset that actually alerts me, though :(
- WillKirkby 12y agoJust re-watched the talk (was going from memory) and it seems you're right, it's "enable this flag to disable the warning".