Gsm Secret Firmware [portable] Review

If you are looking for ways to interact with your phone's firmware without replacing it, these standard GSM USSD codes are often cited in "secret code" articles: : Displays the (International Mobile Equipment Identity). *3001#12345#* Field Mode on iPhone, showing raw cell tower data and signal strength. *#*#4636#*#*

Since the baseband firmware has direct access to the microphone and GPS, a compromised firmware could theoretically be used for "stealth" surveillance, bypassing any privacy toggles set in Android or iOS. gsm secret firmware