safe to fly

Hi, I borrowed my drone to a good friend for his honeymoon in South America. When he came back, he told me that on his first day he crashed the DJI (apparently his phone stoped working while he was in an automatic fly mode). Furthermore he told me, that he continued flying without any issues...

Is everyone getting an audible "The home point has been updated" prior to going airborne with the Mavic Air? I notice that I do not hear it most times. Everything looks clean and green on the iPhone display "ready to fly" but the voice prompt appears to be inconsistent. Perhaps its default is a...