Talk of Apple releasing another iOS 8 update is been circulating for sometime and it has finally materialized today.
The iOS 8.1.3 update was released and most peo. e that haven't jailbroken their device can immediately download the update from the software update menu in Settings/General/Software Update.
The update comes with bug fixes and security enhancements according to the information displayed if additional information regarding the update is requested.
To install the OTA update, click on install now, scroll down to agree to the Terms and Conditions presented by Apple. The update size is 136MB for iPhone 4S, it could be more for other Apple devices like the iPad or even the iPhone 6. However, the update shouldn't take more than 10mins.
If you are not comfortable with OTA update, you can download the full firmware from here and then install on your phone. Its also a better choice for those that may want to jailbreak their phone in the future.
Currently there's no jailbreak for iOS 8.1.3