I don't know if it is geolocked somehow, I wouldn't be surprised if it was. for example, Japanese iphones always make a shutter sound in japan or in airplane mode
There is a waveform thing in the corner you can press during a call. It will say "this call is being recorded" and waits 5 seconds, then records the call.
strangely... the recording doesn't end up in voice memos, it ends up in notes.