Root Call Blocker

Root Call Blocker

100,000 - 500,000 downloads

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Root Call Blocker 2 is a powerful call, SMS and MMS blocker for root users. Stop bill collectors and text message spammers 100% of the time with our unique root-enabled call manager. Now with better everything!

Unlike other call filters, Root Call Blocker silently blocks calls at a system level. You need not even know its working and can choose to be notified only if specific numbers are blocked.

Supported languages: English, Español, Português, Français, Italiano, Català, Deutsch, Suomi, Nederlands, Čeština, Svenska, Magyar, Polski, Român, Русский, Türkçe, 简体中文, 繁體字.

Other languages are incomplete. If you want to help with a translation, visit to get started.

Unique features:

• Your phone never rings and the screen never turns on
• In call widgets allow you to ignore/block calls on the fly
• Customize notifications with vibration, ringtone and LED colors


• Completely ignore spam calls and messages
• Import large lists of numbers from files, including CSV
• Block MMS and numbers containing letters
• Reject unknown, withheld, private and restricted numbers
• Keep blocked calls and messages hidden with password, dialer and pattern
• Block area codes or countries


• Native Tasker plugin
• Silent/hidden operating mode
• Cloud backup to Google Drive and Dropbox
• Google Groups integration
• SMS auto-replies
• Encrypted backups

Trial restriction:

• No more than 5 items per list


WARNING - app generally only supports devices commonly available in the West. We will ignore requests for compatibility with random knockoffs and no name provider phones.

WARNING - multi-sim devices are not fully supported, though after version Qualcomm and MTK chipsets should work.

If you need help, use "Write to us" in the app's settings or visit the website:

This app does not control your voicemail service. If your blocked calls are being sent to voice mail, try another blocking method or use Google Voice. You can simulate a disconnected message by forwarding busy calls to a number that doesn't exist.

OUTGOING CALL permissions are needed for hidden mode, using the dialer to enter a password.

ACCOUNTS are needed for Google Contact Groups.

SEND SMS needed for auto replies and SMS routing.

INTERNET ACCESS is for licensing and the "Write to us" feedback tool.

LOG DATA is only sent with your permission via the "Write to us" menu item in Settings. You do not have to send anything if you don't want to.

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Recently changed in this version

• Multi-SIM support (alpha, more features to come)
• Fixed incall widgets not showing for contacts in lists
• Fixed various incall widget issues
• Updated translations
• Fixed errors from user reports

Please disable re-authentication in Superuser to avoid losing root after auto-updates!

Need advice? Write to us through the app, we will help. You can get beta updates and discuss the app at the G+ community here:

Comments and ratings for Root Call Blocker
  • (61 stars)

    by Catman Jones on 06/07/2014

    This has been a great app for me in the past. Worked like a charm on my old rooted Verizon Note 2 - never an issue. Just switched to the S5 on Verizon, which I rooted with towelroot. RCB now acts like it has root access, but it doesn't block anything. I asked a developer at Fahrbot about this, and the feedback was the root permissions were somehow damaged. That's nothing I did, nor is it some

  • (61 stars)

    by Thiago A. on 03/07/2014

    Works very well, but as soon as it block something the battery usage of the app goes to the top, only reboot solves on my S4.

  • (61 stars)

    by RAvi gill on 01/07/2014

    I installed it and after few days i blacklisted a few numbers ..but when i unistalled it all no. Were still blacklisted

  • (61 stars)

    by Pedro Ruiz on 24/06/2014

    I ran this on stock android on my gs3, worked well but there was a slight ring heard by caller before call being rejected. Installed the latest CM ROM and now it's silky smooth. Rejected calls are lightning fast.

  • (61 stars)

    by Anis Ea on 23/06/2014

    Most of the 1* ratings come as retaliation from haters and trolls because they can't afford the paid version.

  • (61 stars)

    by Chad Carungay on 22/06/2014

    Lol it says not root even if my phone is rooted.fix this doesnt work to me in this phone

  • (61 stars)

    by Frank Zeuner on 15/06/2014

    This is a very powerful app. I've never had a blocked call or text get thru!