[dan_linder]

They can, but the AirTag has to be "seen" by another connected device and that device must relay the GPS position it was "seen" at.

I don't know if Apple IOS is correct enough to log the time and position of AirTags when the device itself is disconnected from a network...

[solardev]

The newer devices can locate each other via ultrawideband triangulation too, completely detached from the cell network. They have special chips for this built-in: https://www.pocket-lint.com/phones/news/apple/149336-how-app...

[acdha]

It’ll show up in Find My even if it can’t connect to the internet. BLE and UWB both work offline.

[sergers]

Samsung has their own "offline finding" as they call it, if enabled other Samsung devices/wearables can locate it somehow, brief on how that's done on their site

[Scoundreller]

I wonder how well the relay phone does store and forward, I guess it does otherwise AirTags are useless outside of cellular footprint territory.

I guess sometimes a late ping is better than no ping.