Dear Android Engineers,
I am doing a research about monitoring SMS and Phone Call activities by 
hooking the kernel system calls. The version of Android I am using is 4.2.2 
JellyBeans and the kernel version is 3.4. 

My hooking program runs as LKM (loadable kernel module) and it works pretty 
well with the goldfish emulator. When I send the SMS messages, the program 
can capture the corresponding "AT+CMGS=" AT command. 

However, when I moved all my work from emulator to nexus 4, I can not 
capture any AT commands any more. I searched and got to know nexus 4 uses 
Qualcomm MDM9215 modem. I was wondering if anyone had some experience with 
the AT command on specific devices like nexus 4. 

Any suggestions on why it didn't work when I moved to nexus 4 would be 
appreciated!

Thanks folks for your time!

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