Here you can enter a phone number to block, or select a number from your recent call log. By default, SMS messages from the numbers on your block list will also be blocked along with calls.

Caller ID automatically displays the phone number for anyone who calls your Android phone unless that number is already in your Contacts app. In this case, the name of the person also appears. To ...

Your phone number cannot be blocked while calling toll-free numbers or emergency services. The temporary way of keeping your mobile number invisible from caller ID is as easy as 1, 2, 3.

Here you can enter a phone number to block, or select a number from your recent call log. By default, SMS messages from the numbers on your block list will also be blocked along with calls.

Heck, maybe you’re getting harrassed by an ex-employee. If you have an Android phone, help is at hand in the form of WhoAreYou, a free app that provides visual Caller ID and blocks unwanted calls.

If you have an Android phone registered with Google services, Google has matched your phone number to your Google Plus profile and plans to turn the association into yet another de-anonymizing tool.

If you don’t want to receive calls from specific or unknown numbers on your Android phone, you can block them all using the Phone or Messages app.