I don't imply that this feature solves all the problems, but I know plenty of people (mostly attractive girls), that won't answer to unknown numbers on their pe

I don't imply that this feature solves all the problems, but I know plenty of people (mostly attractive girls), that won't answer to unknown numbers on their personal phone anyway. Furthermore, there's log of blocked calls you can always check for repeated attemps and call back, or your hypothetical friend can send you sms to present himself.