I only have my experience with this so it requires you to have a phone that is off and without a battery or in a faraday(foil) shielded bag. Be in an area your government doesn’t want regular people to be (unacknowledged military base), turn on the phone.
I’ve done this many times so I know how long it takes to power on my phone to a “usable” state on my iphone and android.
I can’t take my phone inside where I work and they have mobile phone detectors which set off alarms if you bring one near any door or the inner facility fence. I put my phones inside a foil cooler bag with ice packs so they won’t overheat inside the car.
My guess is that there was a cell site simulator and it was setup to take over any phone which comes in the area. I got the same result with my android and iphone. Phone boots, weird hang where all indicators appear but I cannot interact with the phone. Wait at least one minute then I can use the phone.
I think this is why governments don’t like China developed 5G technology. It doesn’t have their default back doors.
I’ve done this many times so I know how long it takes to power on my phone to a “usable” state on my iphone and android.
I can’t take my phone inside where I work and they have mobile phone detectors which set off alarms if you bring one near any door or the inner facility fence. I put my phones inside a foil cooler bag with ice packs so they won’t overheat inside the car.
My guess is that there was a cell site simulator and it was setup to take over any phone which comes in the area. I got the same result with my android and iphone. Phone boots, weird hang where all indicators appear but I cannot interact with the phone. Wait at least one minute then I can use the phone.
I think this is why governments don’t like China developed 5G technology. It doesn’t have their default back doors.