How location get captured in system, while making calls in App.

Consider I had made call in remote area where there is no network, and that calls get sync with the system when I had in good network.

Here what would be the lat and long of calls?

1. System will not capture location, as no network present during making calls

2. System will capture the location of the calls

3. System will capture the location, where calls get synced.

if condition 1 is true...then Is there anyways to overcome it?