Microsoft has a guide for its store staff as to devices and software that can beat its Windows Phone challenges, insiders uncovered on Monday. Staff were told to be careful about the weather challenge at the heart of more the recent incident, of getting temperature for two different cities, as Android users with the right widgets could win the test, according to The Verge. Similarly, iPhone 4S owners could win two tests, either by using a faster camera to post quickly to Facebook or by using a Siri trick to post to Facebook and Twitter at the same time.