Sequential (141) GSM

https://johnchihau.blogspot.com/2026/07/httpsjohnchihau.html?m=1

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Ref: https://johnchihau.blogspot.com/2026/07/httpsjohnchihau.html?m=1

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John : See the Pic above.  In fact , inside a Chip of GSM transmitter and receiver, there're 2 Circuit.  They are Circuit A and B.

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Me: However,  we don't see those circuits with our naked eyes. 

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John : Of course,  we don't see them with our naked eyes. They are hidden.  I supposed that. The clock line of the GSM Antenna is hacked. 

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Me: Ok.

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John:  Hacker can set the clock line of the SIM card on Circuit B. Hacker can set the Circuit of SIM_I/O on Circuit B either. Something like,

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1) Subject [Sim card Clock line]

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2) Subject [Sim Card I/O]

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3) Circuit [A] <-- Originally,  it's Circuit B

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4) Chosen clock line [GMS antenna] <-- Originally,  it is Crystal oscillator. 

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5) Interrupt status [Real interrupt] .

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Me: How to set?

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John : Take a look at this article first. https://wodewangzhishime.blogspot.com/2023/12/blog-post_14.html?m=1.

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Me: Ok.

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John:  First, I create a code like,

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Int SIM_CARD_CLOCK_LINE  = Circuit A.

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Me: Ok.

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John : And then, I let this Code process in the Circuit B. Somethings like,

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Int SIM_CARD_CLOCK_LINE (processing in Circuit B) = Circuit A (Processing in Circuit B).

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Me: Such Code can't process in Circuit A.

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John : No, it can't.  When it process in Circuit B, it's disastrous.

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Me: Why?

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John : The SIM CARD will become the Slave of GMS Antenna.  Note : Originally,  The SIM CARD is the slave of Circuit B. 

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Me: The GMS Antenna can control "everything" of your SIM Card , e.g., Contact List, Call records, Card ID, SMS message, Physical address, and, so on and on.