Android’s security policy prevents the extension from auto-playing or accessing the audio stream without a user gesture.
You click the captcha audio button, Buster’s popup opens, but it says "No audio detected" or spins forever.
Buster is a highly popular open-source browser extension that uses voice recognition to solve reCAPTCHA challenges automatically. While it works seamlessly on desktop browsers, setting it up and keeping it functional on Android devices can be challenging. Because mobile browsers handle extensions differently, users frequently encounter errors where Buster stops responding, fails to connect, or cannot trigger the voice challenge.
, but with Kiwi Browser and the fixes above, it works for 90% of audio captchas. The remaining 10%? Use Live Caption as a fallback. buster captcha solver for android fix
Buster remains a powerful tool, but it is not a "magic" solution for every type of challenge. Keeping the extension and your browser updated is the best way to maintain functionality.
| Error Message | Likely Cause | Quick Fix | | :--- | :--- | :--- | | | reCAPTCHA temporarily blocking the request due to false positives. | Switch between Wi-Fi and mobile data, or clear browser cache and cookies. | | "The extension couldn't hear anything" | The audio challenge was silent, corrupted, or unrecognizable by the speech API. | Manually solve the audio challenge by clicking the speaker icon and typing the words yourself. | | "Buster doesn't work anymore" | Tracking protection or anti-fingerprinting settings (level 2) are interfering. | Lower the tracking protection level in Firefox settings, or disable privacy.resistFingerprinting . | | "Try again later" | Your IP address has solved too many CAPTCHAs in a short period and is temporarily blocked. | Take a break and try again after an hour, or switch your network connection. |
Find Buster and ensure is enabled; this is often a critical missing step for functionality. Troubleshooting Common Buster Issues on Android While it works seamlessly on desktop browsers, setting
If you see "Something went wrong" or the extension stops responding:
Some user reviews reflect this reality: “Sometimes work and absolutely success. But many times don't work…. Especially when it is impossible for a real human to solve”.
For users facing challenges during the setup process, referring to the official documentation or community forums can provide step-by-step guides and troubleshooting tips. Additionally, ensuring that the device allows installations from unknown sources (if necessary) and granting the app the required permissions can resolve setup issues. The remaining 10%
A GitHub issue (#444) reports: "Buster seems to no longer work on pages, it attempts to solve the Captcha, takes about 30 seconds and fails saying it couldn't solve it."
John was impressed by the community support and decided to contribute to the project. He shared his own experience and provided feedback on the tool, which helped the developer refine the app further.
For anyone stuck on a verification page, these error messages are infuriating. Buster was designed to eliminate that friction by using speech recognition to complete reCAPTCHA audio challenges. In practice, however, the path to a working setup isn't always smooth on Android. It's not that the tool is broken—it's that modern browsers require precise conditions for extensions to work correctly.