Shortly after Vodafone advised users not to upgrade to iOS 6.1, Apple has released 6.1.1.

This latest update is exclusively for the iPhone 4S. It contains bug fixes to stop the 3G problems and dropped calls that users have been suffering. Another reported problem with the 6.1 update was the unusual high battery drainage. This seems to have been rectified as well.

Apple hasn’t said what exactly caused the problems, but they have been very quick in getting the 6.1.1 update out. Other iOS devices are due to get the update as well, but Apple are still testing them.

Did iOS 6.1 cause you major problems? Please let me know in the comments below.