Apple plans to issue iOS 5.0.2 for the iPhone, iPad and iPod touch very soon to address battery life issues, a report has claimed.

German website Macerkopf claims that Apple wants iOS 5.0.2 to provide the iPhone 4S with 40 hours of standby usage and 10 hours of active use.

Since the launch of the iPhone 4S, many users have complained about poor battery life. Apple last week issued iOS 5.0.1 to address the problem though some have complained that the issue still remains or in some cases has got worse. Owners of other iOS devices have also claimed that iOS 5 has made battery life worse.

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Apple has acknowledged that some battery issues remain and said that it is working to fix the problem, so claims that iOS 5.0.2 is not far away are unsurprising. However, the report also contains some interesting claims about iOS 5.1, which will bring several changes to Siri, the voice-activated personal assistant on the iPhone 4S.

Apparently iPhone 4S owners will be able to control taking photographs, shooting video and turning Wi-Fi and Bluetooth on and off, the report says. However, Macerkopf reckons that iOS 5.1 might not be with us until the end of the year.