Recent developments in browser technology have raised concerns about user privacy and data tracking by companies like Meta and Yandex. In response, several Android browsers are enhancing user privacy by blocking abusive JavaScript linked to web trackers. DuckDuckGo has implemented measures to block domains and IP addresses associated with trackers, preventing the transmission of identifiers to Meta and restricting access to Yandex Metrica. Following feedback, DuckDuckGo's developers updated their blacklist to include missing addresses. The Brave browser uses extensive blocklists to prevent identifier sharing and blocks requests to localhost without user consent. Vivaldi forwards identifiers to local Android ports by default but allows users to adjust settings to block trackers. Researchers warn that these solutions may not be foolproof and emphasize the ongoing challenge of maintaining effective blocklists. Chrome and most other Chromium-based browsers execute JavaScript as intended by Meta and Yandex, while Firefox has faced challenges with SDP munging and has not yet announced plans to address this behavior.