Ans. Unknown calls are not favorable because someone is making attempts purposefully to trap you or get some favor from you. An unidentified or hidden ID will not come with a positive attitude. It may be for somebody’s business promotions and not for your goodwill. The phone number hiding is a way from the caller’s side to become anonymous to others. A person who is calling for your best will surely expose the identity and will surely have a Caller ID whether it is an individual or a business.