As you all might know, iOS 11 will be released for public today. However I installed the GM version of iOS 11 on Sep 12th and have been using ever since on my iPhone 6S. Generally the OS is very smooth and the look and feel is awesome! Texts look brighter and very sharp 
However, I used to have full day battery life on iOS 10.3.3 . But with iOS 11 I am getting only about 10 to 12 hours of battery life and it will go below 20%
Not sure if this will be fixed in the version that will be released today (but people say it will most likely be the same build as iOS 11 GM) so if you are planning to update, just a fair warning. Perhaps wait a few more days to see general feedback on battery life. But if you are only looking for smoother performance and beautiful interface with nice wallpapers go ahead and update 

However, I used to have full day battery life on iOS 10.3.3 . But with iOS 11 I am getting only about 10 to 12 hours of battery life and it will go below 20%

Not sure if this will be fixed in the version that will be released today (but people say it will most likely be the same build as iOS 11 GM) so if you are planning to update, just a fair warning. Perhaps wait a few more days to see general feedback on battery life. But if you are only looking for smoother performance and beautiful interface with nice wallpapers go ahead and update 


