Apple has released iOS 5.0.1, an update that fixes a series of issues that drained the iPhone’s battery.
Users started complaining about the battery life of the iPhone 4S not long after the device was released to public. The issue is not caused by the iPhone, but anyone that uses iOS 5. Apple admitted that iOS 5 had battery performance issues last week.
iOS 5.0.1 was the first update that Apple delivered “over-the-air”- without requiring users to connect their devices to iTunes via PC. Other fixes included in the iOS 5.0.1 claimed to resolve bugs with documents stored and synced using iCloud, improved voice dictation accuracy for Australian users, and added multitasking gestures to 2010’s first-generation iPad.
Apple patched five vulnerabilities including a flaw in the operating system that may allow hackers to build apps that secretly install programs to steal data. It also revoked the digital certificates of a Malaysian certificate authority (CA).
To do an over-the-air update, select the “Settings” app on an iPhone, iPad or iPod Touch, then touch “General” and finally “Software Update.”[Source]-Computer World