This part is procedural, not technical.
Step 3: Create a Google Play Developer account
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Pay $25 one-time fee
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Account is permanent
In Android Studio:
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Menu → Build
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Generate Signed Bundle / APK
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Choose Android App Bundle (AAB)
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Create a new keystore
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SAVE THIS FILE
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SAVE THE PASSWORD
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Back it up (cloud + local)
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Select release
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Generate
You’ll get:
app-release.aab
This is the file you upload to Play Store.
In Play Console:
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Create new app
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Choose:
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App name
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Language
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Free (recommended)
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Upload the .aab
You’ll need:
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App icon (512×512 PNG)
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Feature graphic (1024×500)
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2–8 screenshots (phone screenshots are fine)
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Short description
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Full description
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Privacy policy URL
You already have:
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App content
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Icons (we generated earlier)
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Working build
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Fill in content declarations
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Mark as Educational / Developer Tool
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Submit
Review usually takes:
First app: ~3–7 days
Updates: hours to 1–2 days