When building mobile web applications we can now use Selenium 2 mobile tests to run the same acceptance tests on iOS, Android and Blackberry. This works on emulators, simulators and physical devices. We have successfully used this approach on production software for all 3 platforms. While the Blackberry driver is still in beta, we found it stable enough for use. The key challenge is the different ways to install the driver and start the browser, but this only needs to be solved once. We suggest that companies doing mobile web for these devices try this approach. We see no reason why this approach cannot be extended to Windows Phone in the future.