INSTALL_FAILED_TEST_ONLY: installPackageLI
The APK is marked testOnly (built by Android Studio’s Run button), so normal installs refuse it.
Exact message you may see
installPackageLI testOnly
Seen on:
Android
Meaning
APKs from Run → app include android:testOnly="true" and can only be installed with adb install -t. Share builds made with Build → Build APK(s) or assembleDebug instead.
Common causes
- Sharing an APK built via the Run button
- Build config adding testOnly
⚡ Quick fix
- Install with adb install -t (testing only)
- Build a shareable APK with ./gradlew assembleDebug or assembleRelease
Detailed fix by platform
ADB
- kotlin
adb install -t app-debug.apk ./gradlew assembleDebug # produces a normal debug APK
How to diagnose
- Source — How was the APK built?
- Manifest — android:testOnly present?
🔧 Still not fixed?
Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:
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- INSTALL_FAILED_INSUFFICIENT_STORAGE INSTALL_FAILED_INSUFFICIENT_STORAGE: Failure [INSTALL_FAILED_INSUFFICIENT_STORAGE]
Most viewed in Android
Other ways to find it
Where this error sits
Origin: On your device. Errors that are often confused with or caused by this one (click to open):
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Last updated 13 Oct 2026