Private calls with no caller ID can be annoying – and sometimes scams Here's how to block them on iPhone.

Alternatively, if almost every unknown caller is a dud, you can safely pick the “Silence” option and let voicemail sort them out. This is especially true in an age where number spoofing is rife, where ...

If you don't want people to know you're calling, you can hide caller ID by blocking your own number on both landlines and ...