What I think it is really very difficult to create and execute our app automation scripts on multiple devices through Automation studio in 30 minutes because even it is automated but still have to face many challenges like:
Does your app support many Operating System?
• Whether your app compatible with many OS such as iPhones, Android, Blackberry, Windows and many more.
How much data will the application require?
• Users without unlimited data plans or devices without large internal storage be able to handle the application.
How fast is the application installed?
• With slower processors and networks, users still require desktop speeds out of their mobile devices.
Networking issues – This is possibly the very important point to be analysed, as almost every app requires Internet connectivity to keep functioning. Hence, it is very important to see the app's reactions when there is no Internet connection.