I've had a face time call this morning at 06.30am from a UK mobile number. Half asleep I didn't answer but then almost immediately thought 'what if it's someone in need' .. I called back twice, no answer 🤔 so I've now sent a text message asking who it is in a polite way. I don't recognise the number but I'm miffed who'd call at this time of the morning. Could be a child who's got hold of a phone but then would you reply and apologies- I know I would!