As a citizen, I am shocked and appalled by this backdoor. As a software engineer, I can't help but marvel at the creativity and thoughtfulness put into the exploit.
Yeah it has internal GPS, works without WiFi and SIM and sets automatic height restrictions based on where you are. I live in Brooklyn near an LGA approach vector, surprisingly it tells me the maximum height is 150m, which still feels pretty high considering how low jets pass over on their way to LGA.