I'm still on 5.1.1 stock because I afraid thats the battery life will reduce. How iOS 7 run on the 4s? Good enough to upgrade from 5.1.1? What i love in the 5.1.1 is the perfect work with no lugs at all and the amazing battery life. When i saw the ios 7 i really want to upgrade when it will come out. What is your recommend? Thank.