My Android phone prevents me from recording phone calls at the request of my carrier, even though it's totally legal for me to do so in my jurisdiction.
I'm not loving where this is all going.
Edit: apparently the /s is obligatory on this one
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.