Apple has confirmed that the unusually low battery life seen by some iPhone 4S owners is down to a bug in iOS 5.
Some iPhone 4S owners found that battery life was very low and a number of workarounds circulated that improved matters for some users including disabling the time zone feature.
Apple have now confirmed that a bug in iOS 5 is to blame but characteristically refused to be drawn on what users might do as a workaround.
"We have found a few bugs that are affecting battery life and we will release a software update to address those in a few weeks," Apple said in a statement.
Recently an iOS 5.0.1 beta was made available to developers which was described as fixing bugs affecting battery life.