We have seen a number of reports suggesting that the Apple iPhone 4S has a software bug that has resulted in poor battery life. iDownloadBlog says that adjusting the time zone settings on the iPhone might help alleviate the issue. Reportedly, a bug within iOS 5 forces the phone’s location tracking feature to remain active far more than it should, which in turn drains the phone’s battery too quickly. Users can manually turn off the automatic time zone setting by navigating to Settings > General > Date & Time and toggling “Set Automatically” to “Off.” Other users, however, have suggested that the time zone function has nothing to do with the poor battery life, which has left some people fighting to squeeze more than just a few hours of battery life from their iPhone. Apple has yet to release an official patch to address those with poor battery performance, but we suggest adjusting your time zone settings to see if that helps in the meantime. In our independent tests, we’ve found that disabling the setting does improve battery life to some degree, though none of our units were as bad as many users are reporting even with the setting enabled.