Depending on what phone you have, blocking a number can be achieved by downloading a call blocking application, contacting your service provider, or adding the number to your block list. Several newer phones have a blocking feature built in, such as the iPhone and some Android phones.
- Add the number to your block list
Some phones, such as the Apple iPhone, have the option to add a number to a block list. Once a number has been blocked by a user the blocked number can no longer call, message or leave voicemails on the user's phone.
- Download a call blocking app
There are several apps available in the iOS app store or Google Play store. Download and install a call blocking app, and choose the numbers you would like to block.
- Contact your service provider
Many service providers allow users to block numbers. Verizon Wireless, for example, currently allows you to block up to 20 contacts for a $5 per month fee.
- Change your number
Though this is not a method of blocking, if you need a method of disallowing a large number of people to contact you, changing your number may be the best option. Your service provider can change your number for a nominal fee.