What is ADB, and why is it used in Android development? How do you install and configure ADB on your system? Explain the command: adb devices. What is the difference between adb shell and adb shell ? How can you push and pull files using ADB? e.g., adb push , adb pull How do you install and uninstall an APK using ADB? adb install, adb uninstall What does adb logcat do? How can you take a screenshot or record the screen using ADB? How do you clear app data or cache using ADB? adb shell pm clear Explain how to debug an app that is not launching Scenario: The app crashes as soon as it opens on a test device, but it works fine on the emulator. How would you troubleshoot using ADB? Look at logs using adb logcat, check for device-specific errors, app permissions, or missing resources. Scenario: You want to test an APK on multiple devices connected to your machine. How would you use ADB to install the APK on all of them? Use adb -s install for each device. Scenario: You need to simulate incoming SMS or phone calls for testing. Can this be done with ADB? For emulator: adb emu sms send or adb emu gsm call Scenario: An app works fine when installed manually but crashes when installed via ADB. What could be wrong? Check for installation flags, missing permissions, or incompatible APK versions. Scenario: You’re asked to capture logs while reproducing a bug. How would you capture only your app’s logs using ADB? adb logcat | grep or use logcat filters by tag/priority. Scenario: How do you test deep linking or broadcast receivers using ADB? adb shell am start -W -a android.intent.action.VIEW -d "" adb shell am broadcast -a Scenario: Your automation tests are failing intermittently on a real device. How would ADB help in identifying flaky behavior? Monitor logs with logcat, take screenshots, check for memory leaks, ANRs, etc. Scenario: How do you check the current foreground activity or app via ADB? adb shell dumpsys activity activities | grep mResumedActivity