Well, the problem I'm facing is that when I emulate my app through Instant Run runs perfectly on my > smartphone . However, I can not install the same app via the .apk generated.
Use the Android Studio 3.2.0.0
Note: .apk is generated without errors, but when trying to install it appears: app was not installed.
The safest way to generate an APK that will be installed manually (outside of Android Studio) is by using Gradle.
With a terminal open in your project folder, run the following command to generate a new APK:
On Unix: ./gradlew assembleDebug
On Windows: gradlew assembleDebug
Sometimes the APK generated by Android Studio is partial and / or contains the android:testOnly="true" flag in AndroidManifest.xml
