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Modern iPhones and some Androids have "Lockdown" or "Advanced Protection" modes that restrict certain cellular protocols prone to exploit.

Baseband firmware can often be updated silently by the carrier or the manufacturer. Unlike an OS update that requires user consent, these "silent pushes" happen in the background, making it impossible for a user to know if their radio security has been altered. The Fight for Open Basebands gsm secret firmware

There has long been speculation regarding intentional backdoors within baseband firmware. Because the code is closed-source, it is difficult to verify if certain features exist to allow intelligence agencies to remotely activate a phone’s microphone or track its location even when "Location Services" are turned off. 3. Silent Updates Modern iPhones and some Androids have "Lockdown" or

The Invisible Shadow: Understanding the World of GSM Secret Firmware The Fight for Open Basebands There has long