
Click Start Tests, where is the number of valid test configurations from the test matrix that you define on this screen.(Optional) Click Show advanced options to change the Test timeout that determines the maximum duration of each test execution.You can select only those device and Android API level combinations that you want to target for testing. Define your test matrix by selecting which devices, Android API levels, screen orientations and locales you want to test your app against.Click Browse, and then browse to your app APK and test APK before clicking Continue.On the Firebase console navigation bar, click Test Lab, and then click Get Started -> Run an Instrumentation test.

You will need ownership or edit permissions in your project. If you don't have an active billing account, add oneand then connect your project to that billing account.
