[Replicant] Which smartphones comes without baseband processors?

[Paul Kocialkowski]

Hi,

Le samedi 07 mai 2016 à 18:43 +0200, David Hedlund a écrit :
> Thank you for your answer Paul.
> 
> I'm completely new the research field of free smartphones. Can you 
> please rewrite and/or improve this check list for good candidates:
> 
> * Baseband processor integrated in the same chip or into separate chips

The former is not a good idea at all! See https://www.replicant.us/freedom-priva
cy-security-issues.php

Also, note that this is about privacy/security, not software freedom.

> * Baseband processor isolated from
> ** GPS
> ** RAM
> ** user I/O
> ** storage
> ** camera
> ** microphone

It's best if it's isolated from any storage and I/O controller, really.
Depending on the device, there may be more or less of them.


> On 2016-05-06 21:35, Paul Kocialkowski wrote:
> > Hi,
> > 
> > Le vendredi 06 mai 2016 à 14:17 +0200, David Hedlund a écrit :
> > > For now we know that even "single core" mostly comes with 2 processors:
> > > * a baseband processor (BPP, aka modem processor) that is used for GSM
> > > network
> > > * a application processor (main processor)
> > Keep in mind that these processors might be integrated in the same chip or
> > into
> > separate chips, with the modem having more or less control over the rest.
> > For an
> > in-depth description, see: https://www.replicant.us/freedom-privacy-security
> > -iss
> > ues.php
> > 
> > > Question 1: Tiberiu-Cezar from Tehnoetic (tehnoetic.com) just informed me
> > > that
> > > Replicant developer PaulK is working on a free bootloader for LG Optimus
> > > Black
> > > (P970). Is this smartphone equipped without baseband processor?
> > Smartphone have, by definition, a modem (baseband processor). What's
> > interesting
> > to look it is how isolated it is from the rest. Investigation regarding the
> > Optimus Black shows promising results on that regard.
> > 
> > > Question 2: Have anyone yet made a list of smartphones without baseband
> > > processors that can be used as candidates Replicant?
> > You probably mean Wi-Fi-only tablets. A few are supported and some are known
> > to
> > be good candidates (e.g. Allwinner tablets or the first generation Kindle
> > Fire).
> > 
> 
-- 
Paul Kocialkowski, Replicant developer

Replicant is a fully free Android distribution running on several
devices, a free software mobile operating system putting the emphasis on
freedom and privacy/security.

Website: https://www.replicant.us/
Blog: https://blog.replicant.us/
Wiki/tracker/forums: https://redmine.replicant.us/
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