Awesome
SpamBlocker
Android Call/SMS blocker. (Android 10+)
<img src="https://github.com/aj3423/SpamBlocker/assets/4710875/9d44afe7-2524-4b34-8bf3-ba285200bb5c" height="90"> <img src="https://github.com/user-attachments/assets/8757c78c-b0d5-4b8a-9adb-934d8a758e9e" alt="Get it on F-Droid" height="70">
Table of Contents
- Screenshot
- Target Audience
- How it works
- Features
- Permissions
- Privacy
- Support
- FAQ
- Language Support
- Donate
Screenshot
| Call | SMS | Setting | Notification |
|---|---|---|---|
| <img src="https://github.com/aj3423/SpamBlocker/assets/4710875/7f03d0a0-d12e-4e1b-a064-2412fc1cee8e" width="200"> | <img src="https://github.com/aj3423/SpamBlocker/assets/4710875/ff1dd6c3-56dc-4f64-96a5-e7ca379af035" width="200"> | <img src="https://github.com/aj3423/SpamBlocker/assets/4710875/a86fff09-d30b-428e-866c-0f07b874d479" width="200"> | <img src="https://github.com/aj3423/SpamBlocker/assets/4710875/633e0e24-5ba0-44d7-90ec-09324081d37b" width="200"> |
Target Audience
- :white_check_mark: For people who tends to avoid unknown calls.
- For those who need to answer unknown calls, for example, salespeople or lawyers, etc:
- :white_check_mark: If your carrier supports STIR/SHAKEN attestation, or there is any public spam database available for your country.
- :x: Otherwise, consider using a blocker with its own spam database.
How it works
It works without replacing your default call/SMS app.
- For call: <br> ā It's the Caller ID app
- For SMS: <br>
ā It takes over the SMS notifications, it only filters the notifications, the spam messages will still be present in the SMS app.
š” Please turn off the notification permission of the default SMS app in system settings, otherwise there will be double SMS notifications.
Features:
| Filter | It checks |
|---|---|
| Contacts | Whether from a contact |
| Contact Group | Whether it's a member of some contact group |
| STIR/SHAKEN | STIR/SHAKEN attestation |
| Repeated | Whether it's been calling repeatedly |
| Dialed | Whether you have dialed the number |
| Recent Apps | If some specific apps have been used recently, all calls are allowed.<br>Use case:<br>ā You ordered Pizza online and soon they call you to refund. |
| In Meeting | Decline calls during online video meetings |
| Off Time | A time period that always permits calls, usually no spams at night. |
| Spam Database | If it matches any spam number in the database. Any public downloadable spam databases can be integrated, such as the DNC. |
| Regex Pattern | Some typical patterns:<br> - Any number: .* (the regex .* is equivalent to the wildcard * in other apps) <br> - Exact number: 12345 <br> - Starts with 400: 400.* <br> - Ends with 123: .*123 <br> - Shorter than 5: .{0,4} <br> - Longer than 10: .{11,} <br> - Unknown number (it's empty string): .{0} or ^$<br> - Contains "verification": .*verification.* <br> - Contains any of the words: .*(police|hospital|verification).* <br> - Starts with 400, with leading country code 11 or not: (?:11)?400.* <br>- Extract verification code from SMS message: code.*?(\d+)<br><br> Ask AI to generate or explain a regex: <br>ā "Show me regex for checking if a string starts with 400 or 200"<br> ā Results in (400|200).* |
Permissions
| Permission (all optional) | Why |
|---|---|
| INTERNET | For downloading spam numbers from public databases |
| MANAGE_EXTERNAL_STORAGE (Android 11+)<br>READ/WRITE_EXTERNAL_STORAGE (Android 10) | For file access from automated workflow |
| ANSWER_PHONE_CALLS | Reject, Answer and Hang-up calls |
| POST_NOTIFICATIONS | Show notifications |
| READ_CONTACTS | For matching contacts |
| RECEIVE_SMS | For receiving new messages |
| READ_CALL_LOG<br>READ_SMS | For checking if a call is repeated |
| PACKAGE_USAGE_STATS | For feature: Recent Apps <br>For checking whether an app has been used recently |
| READ_PHONE_STATE | For block mode: Answer + Hang-up (monitor ringing state) |
Privacy
No data collection
- Internet access:
- For downloading spam numbers only, if you don't use this feature, you can disable the internet access, or download the offline version from the release page.
- No communication with other app
- Reproducible apk
Support
- Most problems have already been discussed in the issue list, please search first.
- There's also a matrix channel
FAQ
- Google shows security warning when installing this app
- How does the "Priority" work, how to always block a particular number regardless of any other rules
- It stopped working after being killed
- Android 9- support
- Dual SIM support
- Auto delete spam SMS messages
Language support
Languages are translated using Gemini AI(golang script), fire an issue for requesting a new language support.
Donate
:heart: https://aj3423.github.io/donate