Unknown number came in as missed call. I don't answer calls the number I don't recognize. After received 1st call, if unknown I block it from calling my number anymore.

This just happened to me 5 minutes ago. Some man with a thick English accent asked to speak to me and when I said " this is he"  He hung up. What is the purpose of this?

I keep getting calls from different area codes. they all do the same thing. you answer the phone say hello and they never reply to you. after a minute they just hang upi