Closed nebukadnezar closed 6 months ago
Got that tested and confirming it doesn't work without a SIM.
In practice it depends on the phone. I have a couple of old ones which report only main cell tower without neighboring cells. But generally there's no way to determine it globally, you need to test separately on each device.
Does the app work without a SIM card in the phone? Considering a SIM less phone is able to make emergency phone calls, it still registers on the network, so in theory that should still be able to extract CID/LAC|TAC/MNC/MCC?