iPhone randomly start sounds
My iPhone just random starts sound, twice today. I was browsing when I heard this muffled sound like when you’re calling on speaker, last about 1-2 seconds and it stop. I reset my phone and open the same web and the second time I heard a man CLEARLY said “i dont see any..” then it stops.
I am not calling anyone at that moment, do not have any movie played. I have tried to screen record it but it dont make any sound no more.
Is my phone possibly be hacked? What should I do now?
Thank you.
iPhone 11 Pro Max, iOS 15