While uploading your Android app APK file onto the Google Play console you received the following message:
This APK results in unused code and resources being sent to users. Your app could be smaller if you used the Android App Bundle. By not optimizing your app for device configurations, your app is larger to download and install on users' devices than it needs to be. Larger apps see lower install success rates and take up storage on users' devices.
This warning appears because the APK does not use App Bundles, which is the Android's new publishing format, and is mandatory since August 2021. To resolve the issue:
- Use the Android App Bundle to automatically optimize for device configurations, or manage it yourself with multiple APKs.
- Refer the article Uploading An Android App's AAB Onto The Google Play Store for the updated process.
Other warnings may be included, depending on your app's configuration. See the Two Warnings Related to a De-obfuscation File and Debug Symbols article for other examples of App Bundle-related warnings.
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