Android call-blocking apps include Google Voice, Mr. Number and Call Control. There are many apps available to block calls on Android devices, both free and paid. iPhone users may block apps from their device without installing third party apps, though users with jailbroken iPhones may use apps such as iBlacklist.
Google Voice may be used to block unwanted calls on Android mobile devices. Android users must create a Google Voice account and sign in. Google Voice allows users to view voice and text messages in a layout resembling an e-mail account. Phone numbers may be blocked online from within the Google Voice inbox.
Mr. Number is another app that may be used to block numbers on Android phones. The app allows users to block specific callers or entire area codes, which may be a useful feature for blocking telemarketers. Mr. Number users collaborate to create lists of spam and telemarketing numbers. User submitted spam numbers are used to create a blocked number list available to all users.
The Call Control Android phone blocking app also allows users to submit spam listings used to create a centralized blocking list as well. An added feature of Call Control is that it allows users to control how individual blocked calls are handled. Users may utilize the Call Control app for 14 days and must then choose to pay to continue using the app or downgrade to the lite version.