React Native’s Performance Gains on Android 15
1 ) Introduction to Android 15’s 16 KB Page Size Support
Android 15 introduces support for larger memory page sizes, increasing from the standard 4 KB to 16 KB.
This change is driven by device manufacturers equipping devices with more RAM to optimize performance and power efficiency.
Starting November 1st, 2025, all new apps and app updates targeting Android 15 or higher on Google Play must support 16 KB page sizes to ensure compatibility and enhanced performance.
2 ) Impact of 16 KB Page Size on App Performance
Supporting 16 KB page sizes yields notable performance improvements across multiple metrics:
Faster app launches: Improvements range from 3% to 30%.
Improved battery usage: Average savings of 4.5%.
Quicker camera starts: Launch times improve by 4.5% to 6.6%.
Speedier system boot ups: Device boot time improves by approximately 8%.
These improvements contribute to smoother user experiences and more efficient device utilization.
3 ) React Native’s Compatibility with 16 KB Page Size
Popular frameworks, including React Native, have already updated to support the 16 KB page size requirement.
Most React Native apps, especially those without native code or using updated SDK versions, should work seamlessly with Android 15’s new memory management.
Developers relying on native modules may need to recompile their code using recent toolchains compatible with 16 KB pages.
4 ) Preparing Your React Native App for Android 15
Google recommends early testing of apps to identify any dependencies or libraries that might lack 16 KB compatibility.
Developers should verify compliance using tools like the Google Play Console’s app bundle explorer, which highlights compatibility status and required updates.
Testing in a 16 KB memory environment is crucial to ensure the app’s stability, performance gains, and to prevent issues on Android 15 devices.
5 ) Additional Guidance and Resources
For detailed technical instructions on preparing apps for the 16 KB page sizes, developers are encouraged to consult Google’s official documentation and prior blog posts.
Game engines like Unity already support 16 KB, with Unreal Engine soon to follow, aligning with support in React Native and Flutter.
The changes required for compliance are generally minimal, focusing mainly on updating SDKs and recompiling native code where applicable.
Summary
Android 15’s introduction of 16 KB memory page sizes represents a significant step in improving app and system performance on modern devices. React Native developers stand to benefit from faster app launches, better battery efficiency, and overall enhanced user experiences. Ensuring early compliance and leveraging updated React Native versions will allow apps to fully harness these performance gains as the Android ecosystem evolves.
https://justacademy.in/news-detail/react-native-and-ai-integration-for-smarter-apps
https://justacademy.in/news-detail/android-5g-support-expansion-news
https://justacademy.in/news-detail/flutter-design-tokens-implementation
https://justacademy.in/news-detail/why-react-native-is-the-best-choice-for-mvps-in-2025
https://justacademy.in/news-detail/react-native-testing-tools-you-didn?t-know-existed
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