Many cars have schematics available and show what wires and possibly the fuse that will disconnect the telematics module. Several phones now have hardware switches to disable the modem and etc. Faraday bags work great for blocking mobile phone frequencies, unfortunately the rest of the phone is not that useful at that time and the phone microphones still work. Has anyone had any success desoldering the modem and internal microphone/cameras from phones that don't have hardware switches? View quoted note →