Imputed Cost. What is an 'Imputed Cost'. An imputed cost is a cost that is incurred by virtue of using an asset instead of investing it or undertaking an alternative course of action. An imputed cost is an invisible cost that is not incurred directly, as opposed to an explicit cost, which is incurred directly.
Using a Mobile Phone. 1  1. Call your cellular phone company. Ask them about the services they provide for blocking unknown numbers. 2  2. Install a call blocking app. If you are using an iPhone or Android phone, you can install apps that will allow you to automatically block calls from hidden numbers. 3  3. Use Do Not Disturb on your iPhone.
Why These Apps Differ From *67. Dialing *67 before making a phone call will make your phone number show up as Blocked or Private on your recipient's phone. This is also the case when you change your iPhone's settings to block your Caller ID. This, of course, is not as inviting as seeing a real number, so your recipient may refuse to answer a call that you have manually blocked.