[Replicant] Replicant on Nexus One

Simon Josefsson simon at josefsson.org
Tue Jan 23 07:47:33 UTC 2018

Kurtis Hanna <kurtis at riseup.net> writes:

>> Jeremy_Rand[m]: [...] most dumbphones haven't been audited
>> for the ability of the carrier to remotely turn on the microphone, and
>> we know from court documents that this capability exists on a lot of
>> phones.  Most Replicant supported phones have been audited for such
>> capability, and found not to have it.
>> Jookia: Jeremy_Rand[m]: i don't think they've been audited have they
>> Jookia: if you look at the block diagram/schematics of the i9100 you
>> can see the microphone is connected to the modem for instance
>> Jeremy_Rand[m]: Jookia: is the mic connected to the modem on the S2?
>> Wasn't aware of that, link please?  AFAIK the Replicant devs have looked
>> at most of the supported phones and discarded any models that obviously
>> fail a cursory audit.  The audits definitely aren't as thorough as we'd
>> like though.
>> Jookia: Jeremy_Rand[m]: https://files.catbox.moe/fnzqss.png see
>> Jookia: AUDIO block containing SPEECH_PCM connects directly to the
>> codec and ports, bypassing the CPU
>> Jookia:
>> https://i.pinimg.com/originals/b4/33/db/b433db446415bc7cb2c238c563748556.jpg
>> looks like the mic is wired to the modem in the galaxy s3
>> Jeremy_Rand[m]: Jookia: out of curiosity, is that modem/mic info
>> documented on the Replicant wiki?  Seems like it'd be important to add
>> to one of the research pages if not already there
>> Jeremy_Rand[m]: Jookia: unfortunately most of the audits I mentioned
>> are not publicly documented, it's research that (AFAIK) Paul did, and
>> then never completely wrote down publicly.  Or maybe he did and I just
>> never noticed them?
> I'm curious, does nonfree software (via the modem) control the
> microphone on the S2 and S3, or not?

I don't know.  Another interesting question is whether there is any way
to notice whether the modem does anything unwanted with the microphone?

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