The latest iOS 5.1 beta 3 is available as an update for those currently running the beta and also for download at Apple’s developer hub.
The main thing to note here is that the 3G toggle, that has been missing on iPhone 4S handsets only, is back where it belongs — in the Settings app. This will allow 4S users to better maintain battery life by utilizing EDGE capabilities. Whereas, before, the only option was 3G or bust.
Most users are still waiting for a specific battery update, or fix, instead. Seems to me we’ll just have to hope the next generation iPhone has that A6.
Are you having battery issues with your iPhone 4S?