After Apple Inc. (NASDAQ:AAPL) made an update to iOS 5 through the iOS 5.0.1 update, people believed that the battery issues would be fixed. But many people were still reporting that their iPhone 4S and iPhone 4 batteries were still draining quickly every day. Apple has acknowledged that the battery problem is still an issue and they are continuing to troubleshoot the issue. ?The recent iOS software update addressed many of the battery issues that some customers experienced on their iOS 5 devices,? said Apple in a statement to AllThingsD. ?We continue to investigate a few remaining issues.?