Android is always ready, and sometimes those changes are a little under the hood. One such change that is getting traction – and now Google has a strong deadline. If you are an Android developer, especially with a native code in your app, it is really important to understand this shift your apps are smooth and compatible.
The table of content
What is the size of the page?
Think about the memory of your device like a book. An operating system does not read a small word for memory at a time. It reads in pieces. These parts are called “pages”. For a long time, most Arm64 on Android devices, the size of these pages was 4 KB. Now, for some new Android devices (especially for people who launch Android 13 and later), the size of this page is 16 KB.
Why is this change being implemented now?
It’s all about improving Android on modern hardware. There are some reasons to be implemented:
Better performance: Modern processors can handle large memory parts more efficiently. The size of the 16 KB page means that the CPU spends more time managing small pieces of memory and working actual, which can faster the app’s performance.
Smooth operation: To keep track, with large pages, the system has a slight low head, which makes things a bit more smooth.
Continue to tech: This change helps to straighten Android how new ARM64 processors are designed to do the best.
What are the profession and adherence to this change?
Every major change has its own profession and consistent.
Professor
Apps that rotate a lot of data or related to memory may feel a bit snapper
The system can run slightly more efficiently by benefiting all apps indirectly
con
If your ancestral code is constantly asking for a very small piece of memory (less than 16 KB), each of them can now take a full 16 KB page, which potentially uses more memory than ever.
If your ancestral code assumes that “memory pages are always 4 KB” then it may be in problems on 16 KB -page devices.
Should you worry about this change?
If you need to pay attention:
Your app contains local libraries (such as
.soFiles) are written in C/C ++. This is the place where the effect is the most direct. If your ancestral code does something with memory mapping (MMAP, SHMEM) or file I/O where it calculates offsets or size based on the size of a fixed page.You are developing sensitive apps with local components or other highly performance sensitive apps.
You are targeting Android 15+ with updates from your app.
You don’t have to worry if:
Your app is fully built in Java or Kotlin with no local components. Android run time (art) handles memory for you, so these basic page -shaped changes are largely hidden. You will still get the benefits of performance!
You are using the reaction native or clutter, until you add customs module that deal directly from actions depending on memory mapping or page size
Is it necessary?
Yes Google Play is making it a need for updates of the app. If your app does not support the size of the 16 KB page yet you receive an email from Google Play.

As the screenshot clearly shows, “From November 1, 2025, if your app’s updates do not support the 16 KB memory page size, you will not be able to release these updates for apps targeting Android 15+.” This gives us a solid timeframe to prepare things.
What if you don’t upgrade your app?
If your app has local libraries that are not ready for the size of the 16 KB page according to the deadline, you may feel some serious problems. Here are some:
Crash: This is the most serious. If your page tries to access memory incorrectly due to the size of the size, your app may crash unexpectedly (often with “definite error”).
Wasted memory: If your code allocates memory in more than 16 km smaller parts, it can use more memory than necessary, potentially reduces things or kills memory limits.
Performance Hit: Instead of getting speed, your app can really move slowly if its memory operations are not attached to the size of the big page.
Basically, your app can work properly today, but if its ancestral components are not updated, become unstable or ineffective on new Android devices.
How does this affect hybrid apps?
Generally, if you are creating a standard hybrid app without the customs module, you are in a very good place. The framework itself, and the basic Run Times (Javascript Engine for reaction nest, dart VM for flurry), usually handle memory management, summarizing the size of the page.
However, if you have implemented customs modules in C ++ for important performance tasks or specific hardware interaction, you need to check these modules.
The majority of standard reactions indigenous and fluttering apps, you will probably not need direct code changes related to page size, but always make sure you use the latest SDK version for your own framework to take advantage of any basic platform updates.
What will change the code for this?
The biggest thing in your ancestral code is to make an assumption about the size of the memory page. Instead of 4096 (4 KB), always ask the operating system what its current page size is.
Steps to pick up:
Audit your ancestral code: Find your
.cppFor, for, for,..cAnd.hFiles for direct use of 4096 or 4 KB of memory allocation, buffer sizing, or alignment calculationsChange from
sysconf(_SC_PAGESIZE)Orgetpagesize(): Update any fixed values ​​to recover the size of the original page.Recitting with the latest NDK: Make sure you are building your ancestral libraries with the recent Android ND (R25 or the new target). This ensures that your toll is familiar with the size of the 16 KB page to China and provides the system’s accurate definitions.
If your app has been upgraded to 16 KB page size how to confirm this
You can confirm that if your app has been upgraded through a wide range of tests. However, there are some other steps here.
Check your test device page size:
Be associated with my Android 13+ test device (preferably a new pixel) by ADB
Drive
adb shell getconf PAGE_SIZEIf it returns 16384, you are checking on the 16 KB page device! If it returns 4096, you will need to find a different device to check properly for this change
There is an example screenshot from my device

Run your app mass: Once you have a 16 KB page device, keep your app at its speed. Try all features, especially those that include local code, heavy data loading, or complex tasks.
Monitor for cracks: Keep a keen eye on your crash reporting tools (such as crusuals). Seek especially indigenous accidents (
SIGSEGVFor, for, for,.SIGBUS) Android is coming from 13+ devices, as these can be related to page size issues.Memory Profiles: Although less directly, if you suspect memory ineligible in your ancestral code, use the Android Studio’s memory profile to see if the allocation is unexpectedly large or if you use memory excessive use.
Conclusion
In this blog, we learned about the size of the page in Android, and why and how and how and how to support the 16 KB page size support. I hope you will have a clear idea about the size of the 16 KB page in Android. Now being active, you can avoid the last minute rotation and make sure that passing through the last date of November 2025, your apps continue to perform beautifully on the latest Android devices!
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