Thanks for the link. We also have an in-house solution like fastclick. The hard part about this is tracking down the long tail of failures, particularly when

Thanks for the link. We also have an in-house solution like fastclick. The hard part about this is tracking down the long tail of failures, particularly when they affect devices you don't have access to like the Samsung phones I mentioned above. It means we cannot make any changes to the code we already have without risking breaking some users who currently work (and rely on our app; as separate from the users for whom the app has never worked).