Apple has released iOS 6.1.3 Software Update. To obtain the update, turn on your iOS device and tap Settings > General > Software Update. Tap download and install. To read more about this, you can read about it at the knowledge base article.
About iOS 6.1.3 Software Update
This update contains improvements and bug fixes, including:
- Fixes a bug that could allow someone to bypass the passcode and access the Phone app
- Improvements to Maps in Japan
For information on the security content of this update, please visit this website: http://support.apple.com/kb/HT1222.
iOS: How to update your iPhone, iPad or iPod touch article http://support.apple.com/kb/HT4623.
Available via iTunes.