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Publishing checklist:
  1. Reduce app size - Remove unused resources, enable ProGuard/R8
  2. Prepare signed bundle - Generate signed AAB with proper versioning
  3. Create Play Console account - One-time $25 fee
  4. Upload app bundle - Submit to Google Play Console
  5. Complete store listing - Add screenshots, description, privacy policy
Key tools: Android Studio → Build → Generate Signed Bundle/APK
Play Console: https://play.google.com/console
Publishing an app on the Play Store is straightforward once you have completed your development. Below are a few steps that will help you understand the process in more detail.

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1. Reduce App Size

App size is a key concern before publishing on the Play Store. Android Studio provides plugins and tools that help you reduce app size. One way to reduce app size is to remove unused resources. Android Studio provides an option called “Remove unused Resources” under the “Refactor” menu, which helps you remove unused resources from your app. Check the link below for different ways to reduce your app size: https://developer.android.com/topic/performance/reduce-apk-size

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2. Prepare the Signed Release App Bundle

Before preparing the signed release app bundle, ensure that the android:debuggable attribute is not present in your manifest file. Also, maintain the versionCode and versionName in your (app-level) build.gradle for each release. 
android {
  ...
  defaultConfig {
    ...
    versionCode 2
    versionName "1.1"
  }
}
After the above steps, you need to sign your app and upload it to the Play Store. Android Studio provides an option to generate a signed app bundle. From the menu bar, click Build > Build > Generate Signed Bundle/APK. After that, you can reuse your existing key or create a new one if you don’t have one. For more details, check the link below: https://developer.android.com/studio/publish/app-signing

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3. Upload an App

To upload an app on Google Play Store, you need a Google account. Sign in to your Google account or create a new one if you don’t have one. Then click on the link below: https://play.google.com/apps/publish/ If you already have a merchant account, it shows you a list of your published apps. Otherwise, it prompts you to sign up as a merchant account and pay a one-time charge.
This is a one-time fee of $25. Pay it to start uploading your first app. You can publish other apps through this account later without being charged again.
Check the link below for more details on how to create and upload an app to the Play Store: https://developer.android.com/studio/publish/upload-bundle

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Next Steps

Setup

Review SDK setup and configuration

Connection Behaviour

Optimize WebSocket connection for production

Rate Limits

Understand API rate limiting for production

Android Developer Guide

Official Android publishing documentation