Call Master

Call Master


(4 stars)


Download for Android Like

100,000 - 500,000 downloads

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Call Master is an advanced call, SMS and MMS blocker for root users with privacy features. For a more user-friendly root privacy app, look at Private Place:

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.

Visit the XDA thread for community support:

This application is an old offshoot of our B2B variant and is technically for professional use only. As such we strongly recommend that you READ EVERYTHING BELOW CAREFULLY.


• 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. Its ad supported, but if you want to speed development please consider removing the ads for a small fee in settings.

If you need help the fastest way to get it is at the Google Plus community here:

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

WARNING - APP MAY BREAK STK FUNCTIONS on some operators, including SMS delivery reports

WARNING - THIS APP CANNOT BLOCK IP TRAFFIC of any kind, including the various wifi and SIP calling services. It may also break wifi calling on operators that use STK for RIL functions

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

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

• Support for many MTK chipsets
• Fixes

Comments and ratings for Call Master
  • (64 stars)

    by Darrell on 24/10/2011


  • (64 stars)

    by Suresh Poojary on 25/05/2015


  • (64 stars)

    by D'Aaron Damous on 24/05/2015

    As previously mentioned the call master key always force closes with the Htc One m9. Emailed dev a log of issue but still no fix.

  • (64 stars)

    by Dexter Velasco on 18/05/2015

    Oh love it

  • (64 stars)

    by Fazale Rehman on 14/05/2015

    This app

  • (64 stars)

    by vusi sibiya on 30/04/2015

    Nothing beats this so far, takes time to figure out but it's really worth it. May we please have a cloud backup option?

  • (64 stars)

    by war blade on 28/04/2015

    I loved this app with the last 5 phones I've had. But now my call master pro key keeps force closing. I would appreciate it, if it were fixed to work on my HTC ONE M9.

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