Hi,
You will definitely have to use RxBrowser for testing web pages on Android/iOS. There is simply no way to use system-own or 3rd party non-instrumented browsers with Ranorex (Android/iOS security limitation).
As for re-using your existing testsuite with RxBrowser, it all depends on how generic/browser independent are the xpaths behind the repository elements. You will most probably have to adapt some things here or there in your repo, but generally speaking, it should work. But again, it all depends on how good is your repository
