PrefixBlock: Spam Call Filter
PrefixBlock: Spam Call Filter is made and published by Phung Doanh. AppBrain is an independent app data site and isn't affiliated with Phung Doanh. The app name, icon, screenshots and description belong to Phung Doanh and are shown as published on the App Store.
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- Last updated
- September 25, 2026
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Releases
Updates seen on the App Store- Version
- 1.6
- Launched
- August 2026
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 3.79 MB
- Content rating
- Everyone
Technologies used by PrefixBlock: Spam Call Filter
About the app and developer
About PrefixBlock: Spam Call Filter
PrefixBlock: Spam Call Filter is an utilities app developed by Phung Doanh.
What is the rating of PrefixBlock: Spam Call Filter?
PrefixBlock: Spam Call Filter has no ratings yet.
Is PrefixBlock: Spam Call Filter free?
PrefixBlock: Spam Call Filter is free. The app size is 3.79 MB. The latest version available is 1.6. The last update was on September 25, 2026.
What are the requirements for PrefixBlock: Spam Call Filter?
The app has a content rating of Everyone. The app has been available on the App Store since August 2026.
Developer information for Phung Doanh
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Store listing
By Phung Doanh, from the App Store
Description by Phung Doanh Written by the developer, not by AppBrain. Click to read.
Chặn Đầu Số identifies and warns you about spam calls and texts by prefix. When a number from a prefix you added calls, the app shows a "Spam" label right on your screen.
Other apps only block one number at a time — block this one, they call from the next. Chặn Đầu Số works differently: you block the whole prefix (024899, for example) and the app covers every number starting with it. Spam operations buy numbers in bulk blocks, so blocking by prefix hits them at the source.
Key features:
• Block calls by landline prefix — 024 (Hanoi), 028 (Ho Chi Minh City) and more
• Filter spam SMS from those same prefixes too
• Quick-block suggestions for the most common telesales prefixes — one tap
• "Warn only" mode — show a label instead of hard-blocking, your choice
• Bilingual Vietnamese / English, switch right inside the app
Privacy first:
• Does NOT read or upload your contacts
• NO ads, NO tracking
• Your block list stays on your device
Free for up to 500,000 numbers. Upgrade to Premium (monthly / yearly / lifetime) to block without limits.
Note: iOS handles blocking silently, and it does not block numbers saved in your Contacts.
Terms of Use: https://phungdoanh.github.io/term.html
Privacy Policy: https://phungdoanh.github.io/privacy_policy.html