DO NOT answer calls from number you do not know...
I get few calls and often is SCAM - be careful, especially strange number - heard is virus - license to steal your information. Someone I know is a victim... since then... I do not answer calls from number unknown -
Calls about 4 times a week. Sometimes I pick up hoping to tell them to stop calling. Never anybody there and they never leave a message. Super frustrating.
My Samsung S7/Sprint has a feature to identify spam numbers. It doesn't work too well, since this is the first number that was identified as 'scam or fraud' in the month I've had the phone ... no message left when I let it go to voicemail.