http://www.gottabemobile.com/2014/10/03/ios-8-1-on-iphone-4s-improvements/
8.1 is suppose to bring big performance enhancements and improvements to the 4S, clearing up alot of the lag people may experience on the 4S and iOS 8. And performance enhancements for the 6/6 Plus, 5S , etc
8.1 is suppose to bring big performance enhancements and improvements to the 4S, clearing up alot of the lag people may experience on the 4S and iOS 8. And performance enhancements for the 6/6 Plus, 5S , etc