Testing on Android 4.1.1 or less and Hybrid Android apps on 4.3 or less

in Order to test on Android 4.1.1 (API 16) or less for Native Apps or on Android 4.3 (API 18) or less for Hybrid Apps with WebView we have to use Selendroid.

in your appium.txt file add one more line

automationName = "Selendroid"

You may also require to use different predefined steps for some of the steps.