SpamBlocker Extended (Call/SMS/Notification)

SpamBlocker Extended (Call/SMS/Notification)

Spam Call/SMS/Notification blocker

KerballOne Phone & SMS

Screenshots

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Description

It blocks unwanted calls, SMS messages, and app notifications without replacing your default call/SMS app.
Notification Screening applies your blocking rules to RCS, Signal, WhatsApp, email, and any other messaging app that posts a notification, not just your default SMS app, so spam gets filtered no matter which app it arrives through. Alerts give you a lightweight sound/vibration/flashlight/screen-wake chime for allowed screened notifications, instead of a duplicate full notification.

Filters:
1. Number Rules & Text Rules
2. Contact
3. STIR attestation
4. Repeated call
5. Dialed number
6. Recently used apps
7. Time schedule
8. Notification Screening

Details: https://github.com/KerballOne/SpamBlocker-Extended

What’s new (6.2.1)

SpamBlocker Extended 6.2.1

Fixes:
- Answer + Hang Up could fail on some devices (e.g. CalyxOS) because the ringing event arrived too late. Reverted the 6.1.5 change, as upstream did in 5.19.
- Calls reported with an unknown direction are now screened and logged instead of being skipped.
- Caller numbers in SIP format (e.g. "sip:+49...@ims...;user=phone") now match rules and contacts.
- A call always gets a screening response, even if screening hits an error.

Improvements:
- An empty spam datab

Versions

Version Date Size Requires Android Download
6.2.1 current
b60616f8a70ffa2c…
2026-10-18 8.2 MB API 29
6.2.0
6f6b23b6cedffed2…
2026-10-15 8.2 MB API 29
6.1.5
ddbd2b2f9b30a88b…
2026-10-12 8.1 MB API 29

Permissions

What the app asks the system for. Android only grants sensitive access after you confirm it.

  • Internet accessSend and receive data over the internet.
  • READ_CALL_LOG
  • Phone stateDetect ongoing calls and read device information.
  • ANSWER_PHONE_CALLS
  • Read SMSRead text messages.
  • Receive SMSProcess incoming text messages.
  • RECEIVE_MMS
  • Send SMSSend text messages (may cost money).
Show 17 more permissions
  • NotificationsShow notifications.
  • Exact alarmsTrigger actions at a precise time.
  • Read contactsAccess the address book.
  • PACKAGE_USAGE_STATS
  • REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
  • Read calendarRead appointments.
  • Display over other appsDraw content on top of other apps.
  • System settingsChange system settings.
  • READ_LOGS
  • VibrationControl the vibration alert.
  • Prevent sleepingKeep the device from going to sleep.
  • CameraTake photos and videos.
  • FLASHLIGHT
  • Network stateCheck whether and how the device is connected.
  • Run at startupStart automatically after the device is switched on.
  • Foreground serviceKeep running in the background, visible in the status bar.
  • spamblocker.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

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