Several brands of Android smartphones include contact-blocking capabilities in the messaging and call apps included with the devices. Numerous third-party apps available through Android app stores such as the Google Play Store can also provide number- and contact-blocking capabilities.
Unwanted sales, marketing or nuisance calls are a common problem for mobile users, so most phone manufacturers include pre-packaged number-blocking features. LG handsets have Call Reject in their call apps, while Samsung provides an inbuilt blocking feature known as Auto-Reject. Some modern handsets come with manuals or interactive guides that explain call-blocking features. PCAdvisor.com has guides for the call-blocking features of several major Android phone brands.
Whenever an Android handset does not provide pre-packaged call blocking features, a user can turn to third-party apps, such as Call Control or Calls Blacklist.