Who – Caller ID, Spam Block is a communication app from RD Labs LLC. Detect & Block Scam, Telemarketer, Fraud & Robocalls – Find out who is calling. It currently holds a 3.9-star rating on Google Play, based on 20,422 user reviews.
App Details
| Developer | RD Labs LLC |
|---|---|
| Content Rating | Rated for 3+ |
| Installs | 5M+ |
| Rating | 3.9 / 5 (20,422 reviews) |
| Updated | Oct 28, 2026 |
Screenshots
About Who – Caller ID, Spam Block
Who is a communication app by RD Labs LLC designed to identify incoming calls and block unwanted contacts. It detects and blocks scams, telemarketers, fraud, and robocalls, helping users screen calls and discover who is calling. The app has been installed over 5 million times and carries a rating of 3.87 stars based on over 20,000 user reviews. It's available for free and suitable for users aged 3 and up.
Who – Caller ID, Spam Block pros and cons
Pros
- Free to download
- 5M+ installs with established user base
- 3.87-star rating from 20,000+ reviews
- Blocks scams, telemarketers, and robocalls
- Wide device compatibility
Cons
- File size and minimum Android version not specified
- Rating indicates mixed user satisfaction
Who – Caller ID, Spam Block specifications and compatibility
The build on this page was last refreshed on Oct 28, 2026. Google Play classifies the content as Rated for 3+.
How to install the Who – Caller ID, Spam Block APK
- Allow installs from unknown sources. On your Android device, open Settings, then Security (or Apps > Special app access > Install unknown apps), and allow installs from the browser or file manager you will use to open the APK file.
- Download the APK. Tap the Download Now button on this page to fetch the Who – Caller ID, Spam Block APK file to your device.
- Open the downloaded file. Open your Downloads folder, or tap the download notification, then tap the .apk file to start the installer.
- Install and open Who – Caller ID, Spam Block. Tap Install, wait for the installation to finish, then tap Open to launch Who – Caller ID, Spam Block.
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Frequently asked questions
Is Who – Caller ID, Spam Block free to download?
Yes, Who – Caller ID, Spam Block is available as a free download on Google Play and as a free APK on this page. The APK is the official, unmodified build pulled directly from the developer.
How many people have downloaded Who – Caller ID, Spam Block?
Who – Caller ID, Spam Block has been downloaded 5M+ times from Google Play, putting it among the more widely adopted communication apps in its category.
Is the Who – Caller ID, Spam Block APK safe to install?
Yes. The APK on this page is the original, unmodified build from RD Labs LLC, pulled directly from the Google Play Store with no third-party modifications. It carries the Rated for 3+ content rating Google assigns on Play.
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