> They are 100% undetectable
Nit: they’re very very detectable, just not using your off the shelf phone.
Nit: they’re very very detectable, just not using your off the shelf phone.
If it’s hidden in a metal frame then it’s not going to get a good GNSS fix. And if you’re doing a deep sleep you’re powering down your GNSS module so not getting a proper warm fix.