Call Master

Call Master is a professional grade call, SMS and MMS blocker for root users.
This is a 7 day trial without the unlock key.
I do not provide direct support for this app. You can send logs through the settings and I will examine them, but do not expect replies.
Unless the universe implodes I will only use SuperSU on my devices, so your best bet at getting this to work is to use Chainfire's binary. If you experience problems, follow the instructions below. If that doesn't help, set SELinux to permissive mode, it may.
To use this app together with auto-update in Google Play, you must disable re-authentication in your superuser manager, or you will keep losing root and breaking primary functions. BELIEVE IT.
Do not use 3rd party backup apps - only internal backup.
Issues? Do this EXACTLY:
1. Back up using internal backup
2. Uninstall
3. Reboot
4. Install directly from Google Play
5. Start app, test function
6. Restore internal backup
Permissions, if you're paranoid go use some other app:
android.permission.ACCESS_SUPERUSER
android.permission.CALL_PHONE
android.permission.CHANGE_NETWORK_STATE
android.permission.GET_ACCOUNTS
android.permission.INTERNET
android.permission.MODIFY_AUDIO_SETTINGS
android.permission.PROCESS_OUTGOING_CALLS
android.permission.READ_CALL_LOG
android.permission.READ_CONTACTS
android.permission.READ_EXTERNAL_STORAGE
android.permission.READ_LOGS
android.permission.READ_PHONE_STATE
android.permission.READ_SMS
android.permission.RECEIVE_BOOT_COMPLETED
android.permission.SEND_SMS
android.permission.VIBRATE
android.permission.WRITE_CALL_LOG
android.permission.WRITE_CONTACTS
android.permission.WRITE_EXTERNAL_STORAGE
android.permission.WRITE_SMS