Call Master

Call Master

100,000 - 500,000 downloads

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Call Master is an advanced call, SMS and MMS blocker for root users with unique privacy features.

Supported languages: English, Português, Pyccĸий, 简体中文. Help us translate the user interface, visit

Rooted devices only, check below for more information and important warnings. If you find this app too complex for your needs, consider looking at our simpler call firewall, Root Call Blocker. If you need secure communications and nothing more, check out our app Private Place.


• Your phone never rings
• Your screen never turns on
• Private call and SMS inbox with log sweeper
• Reject unknown, withheld and private numbers
• Password protection
• Route message content to other numbers
• Clear frequent call lists


• Block MMS before download
• Filter SMS by content
• Text variable creation, routing and replies
• Global regex and wildcard filters
• Custom notification icons
• Vibration and LED feedback
• Backup encryption and password protection
• Powerful logging and sorting system
• Number testing
• Independent contact library for total privacy
• Profile scheduling
• Light and dark themes

This is a fully functional application. However, after a 72 hour demo period it will start nagging you to buy the Key. If you deny the app or key INTERNET PERMISSIONS, neither will work. Check the permission explanations at the end of this post.

WARNING - APPLICATION REQUIRES ROOT ACCESS, visit our website for more information:


WARNING - READ THE HELP AND HINTS and when writing to us through the application, describe your problem in detail or your logs will be ignored.

OUTGOING CALL permissions are needed for Hidden mode, refer to the Help for more information on why, possibly free hat racks for your tin hats.

ACCOUNTS are needed for Google contact Groups.

SEND SMS needed for auto-replies and SMS routing.

INTERNET ACCESS MANDATORY for licensing and access to the socket layer. If you block access using a permissions security app or firewall, Call Master will not work.

LOG DATA is only sent with your permission via the "Write to us" item in Settings.

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Recently changed in this version

If you experience an issue or need advice, let us know via and we will help. You can discuss the app at the G+ community here:

• Basic multi-sim support (beta)
• Updated libraries
• Fixed issues from user reports

Comments and ratings for Call Master
  • (64 stars)

    by Darrell on 24/10/2011


  • (64 stars)

    by Samuel Self on 23/06/2014

    This app is very stable for me on my galaxy S4 mini. It filters calls without fail just as I configure it to do. You can get pretty advanced if you like but the basic functions can suffice for some I think. I won't go without it from now on. Been using it for for 2 or more years now.

  • (64 stars)

    by Francesco Franco on 22/06/2014

    Good tasker integration

  • (64 stars)

    by Hendry Setiadi on 16/06/2014

    Just install free version, but why there's no search options to add number from log history? Tried root call blocker, the search options is there

  • (64 stars)

    by Michael Batten on 26/05/2014

    Wondering why unknown calls were coming through, service kept stopping

  • (64 stars)

    by Krishna Teja on 23/05/2014

    Too complex. I don't want to learn that tutorial. There are simpler apps. Bye.

  • (64 stars)

    by Philip di Domenico on 10/05/2014

    Call blocking at its best.