Comment by direwolf20
14 days ago
The GSM processor is often a separate chip. You may have read an article about the super spooky NSA backdoor processor that really controls your phone, but it's just a GSM processor. Connecting via PCIe may allow it to compromise the application processor if compromised itself, but so can a broadcom WiFi chip.
>The GSM processor is often a separate chip
Is it? I remember MotoMing of EZX years to be actually separate and maybe the latest failed attempts at linux phone had one, but I'm under impression the most common way to do it is a SoC where one core is doing baseband and the other(s) are doing linux and they also share the physical RAM that is part of the same SoC. I don't follow the happenings close enough to say it's 100% of all phones and people call me out saying mediatek is totally حلال in this department. It's not like I'm going to touch anything with mtk ever to check.