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[OSNEWS] The second operating system hiding in every mobile phone - Page 2

post #11 of 16
Quote:
Originally Posted by fateswarm View Post

It runs on the SIM.

Then what does it run on with CDMA phones?
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post #12 of 16
Quote:
Originally Posted by Chakravant View Post

Is it possible to flash this second OS? From tinkering with my HP Touchpad I've heard of it having two "BIOSes" that can both be flashed, but the concept of a stock device having two BIOSes seems odd to me.

Yes, it is possible. I flash the base radio software on my HTC one S regularly with XDA developed ones. The custom versions usually help with reception and call quality.
 
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post #13 of 16
Quote:
Originally Posted by fateswarm View Post

It runs on the SIM.
SIMs also have processors, but this is unrelated. SIMs are used to verify your identity, which means they store cryptographic information and your ID, and the SIM's processor uses that information to authenticate you against the base station. It's used by the baseband, but it's not the baseband.
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post #14 of 16
The literal definition of an OS is a collection of software that manages computer hardware resources

So yeah, technically the phone probably has more than two operating systems that manages things like bluetooth, wireless, gps, and other stuff that requires real time managmenet of system resources and time constraints.

Realistically though, these aren't really operating systems, but rather drivers that interface with the main blackbox operating system and provide a properly "formatted" bit stream that the main OS can process. This is just a compartmentalization feature and an indication of encapsulation. I would say this actually has one operating system, which includes all of this stuff, so i'm not really sure what the point of this article is.
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post #15 of 16
call it whatever you want, the point is that the baseband on almost all phones is closed source and contains lots of bugs and vulnerabilities. watch the video http://www.youtube.com/watch?v=fQqv0v14KKY
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post #16 of 16
Quote:
Originally Posted by Coma View Post

SIMs also have processors, but this is unrelated. SIMs are used to verify your identity, which means they store cryptographic information and your ID, and the SIM's processor uses that information to authenticate you against the base station. It's used by the baseband, but it's not the baseband.

They run an OS.
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