How Do I Block a Phone Number for Free?

1. Block a number through your cell phone's settings. Consult your user manual or phone menus to see if there is a call block/unblock setting where you can enter in the number you want blocked.
2. Download a free call-blocking application. Depending on your device, there may be third-party applications available to block one or more phone numbers. The Android operating system offers several free programs, and the BlackBerry App Store includes free trials or 'lite' versions, meaning you don't have the full range of services but may be able to do what you need without purchasing. Visit the app store for your particular smart phone.
3. Contact your wireless service provider. Many providers will let you manage blocking services online after registering for an account. Ask about blocking a specific name or phone number. You may have other options as well, such as blocking all restricted, unavailable and private numbers. Manage your settings online as needed.
4. Register to end telemarketing calls. Contact the Federal Trade Commission at (888) 382-1222 or visit DoNotCall.gov to enter your phone number in the Do Not Call Registry for free. While this will not block a specific number, it may block up to 80 percent of telemarketing calls.