Apple has released another update specifically for the iPhone 4S.
The iOS 6.1.1 presumably fixing the 3G issues that carriers warned their customers about with the iOS 6.1 update.
The update, which is specific to the iPhone 4S, comes with a build number of 10B145. It weighs in at a relatively paltry 23MB.
IOS 6.1.1 , updates the cellular performance and reliability of the device .