They have pushed out "fixes", but the touch screen has always had response issues. I have to touch it, 10 or more times in order to get it to respond. Then.... it picks the wrong thing. This is not limited to the 5S and OS7... This is an on going issue, that my friends have all noted. I DON'T USE THE CLOUD FEATURE and this continues to be an issue.
Worst example continues to be the trying to enter the Contacts, Search. I have even gotten a stylist to pick and it still takes me to groups, when I want to search. It is the touch screen because adding a bluetooth keyboard has helped 100% with typing characters.
Another one that is horrible is the Voice mail.... touching the specific VM to listen to a minimum of 3 times before it takes you to the wrong selection.... or gives you "information".
The only part of the touch screen that works reliably is dialing a phone number.
We are not alone with our frustration. I'm going back to Blackberry as soon as I can. It was a more efficient interface... it lacks the apps, but at least it worked.
Still Broken: http://www.imore.com/now-ios-71-out-whats-fixed-and-whats-still-broken
Mobile Experience Benchmark: http://resources.idgenterprise.com/original/AST-0113021_crittercism-mobile-bench marks.pdf
Mac Rumors: http://forums.macrumors.com/showthread.php?t=1601858