Apple is reportedly looking into complains about iPhone 4S battery life. Apple has done this before, typically after the release of new versions of the operating system, like 3.0, and asked users to install diagnostic utilities to help them track down the problem.
Previously on TiPb we've run a poll asking about your iPhone 4S and iOS 5 battery life, and we've giving you our top tips for troubleshooting and extending your battery life, but it's nice to see Apple still takes the issue seriously. Hopefully any problems they do find will be addressed in an upcoming iOS 5.0.1 update.
Source: The Guardian