Posted by Mayank Jain – Product Supervisor and Jomo Fisher – Software program Engineer
Get able to improve your app’s efficiency as Android embraces 16 KB reminiscence web page sizes
Android’s transition to 16 KB Web page dimension
Historically, Android has operated with the 4 KB reminiscence web page dimension. Nevertheless many ARM CPUs (the most typical processors for Android telephones) assist the bigger 16 KB web page dimension, providing improved efficiency positive factors. With Android 15, the Android working system is page-size-agnostic, permitting gadgets to run effectively with both 4 KB or 16 KB web page dimension.
Beginning November 1st, 2025, all new apps and app updates that use native C/C++ code concentrating on Android 15+ gadgets submitted to Google Play should assist 16 KB web page sizes. It is a essential step in direction of making certain your app delivers the absolute best efficiency on the newest Android {hardware}. Apps with out native C/C++ code or dependencies, that simply use the Kotlin and Java programming languages, are already appropriate, however in the event you’re utilizing native code, now could be the time to behave.
This transition to bigger 16 KB web page sizes interprets instantly into a greater consumer expertise. Gadgets configured with 16 KB web page dimension can see an general efficiency increase of 5-10%. This implies sooner app launch instances (as much as 30% for some apps, 3.16% on common), improved battery utilization (4.56% discount in energy draw), faster digicam begins (4.48-6.60% sooner), and even speedier system boot-ups (round 0.8 seconds sooner). Whereas there’s a marginal improve in reminiscence use, a sooner reclaim path is value it.
The native code problem – and the way Android Studio equips you
In case your app makes use of native C/C++ code from the Android NDK or depends on SDKs that do, you will have to recompile and probably regulate your code for 16 KB compatibility. The excellent news? As soon as your utility is up to date for the 16 KB web page dimension, the similar utility binary can run seamlessly on each 4 KB and 16 KB gadgets.
This desk describes who must transition and recompile their apps
We’ve created a number of Android Studio instruments and guides that may assist you to put together for migrating to utilizing 16 KB web page dimension.
Detect compatibility points
APK Analyzer: Simply establish in case your app comprises native libraries by checking for .so information within the lib folder. The APK Analyzer may also visually point out your app’s 16 KB compatibility. You’ll be able to then decide and replace libraries as wanted for 16 KB compliance.
Alignment Checks: Android Studio additionally supplies warnings in case your prebuilt libraries or APKs usually are not 16 KB compliant. You must then use the APK Analyzer instrument to evaluate which libraries should be up to date or if any code adjustments are required. If you wish to detect the 16 KB web page dimension compatibility checks in your CI (steady integration) pipeline, you possibly can leverage scripts and command line instruments.
Lint in Android Studio now additionally highlights the native libraries which aren’t 16 KB aligned.
Construct with 16 KB alignment
Instruments Updates: Rebuild your native code with 16 KB alignment. Android Gradle Plugin (AGP) model 8.5.1 or larger robotically permits 16 KB alignment by default (throughout packaging) for uncompressed shared libraries. Equally, Android NDK r28 and better compile 16 KB-aligned by default. Should you rely upon different native SDK’s, in addition they should be 16 KB aligned. You would possibly want to achieve out to the SDK developer to request a 16 KB compliant SDK.
Repair code for page-size agnosticism
Get rid of Hardcoded Assumptions: Establish and take away any hardcoded dependencies on PAGE_SIZE or assumptions that the web page dimension is 4 KB (e.g., 4096). As an alternative, use getpagesize() or sysconf(_SC_PAGESIZE) to question the precise web page dimension at runtime.
Take a look at in a 16 KB setting
Android Emulator Help: Android Studio provides a 16 KB emulator goal (for each arm64 and x86_64) instantly within the Android Studio SDK Supervisor, permitting you to check your functions earlier than importing to Google Play.
On-Machine Testing: For appropriate gadgets like Pixel 8 and eight Professional onwards (beginning with Android 15 QPR1), a brand new developer possibility means that you can swap between 4 KB and 16 KB web page sizes for real-device testing. You’ll be able to confirm the web page dimension utilizing adb shell getconf PAGE_SIZE.
Do not wait – put together your apps right this moment
Leverage Android Studio’s highly effective instruments to detect points, construct appropriate binaries, repair your code, and totally take a look at your app for the brand new 16 KB reminiscence web page sizes. By doing so, you will guarantee an improved finish consumer expertise and contribute to a extra performant Android ecosystem.
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