Apple has released an iOS 6.1.1 update for the iPhone 4S, likely in response to issues that some users were reporting with 3G coverage on some European carriers. The update is available now over the air to iPhone 4S owners, but we’ve yet to see it appear for other devices. You can also download it directly here, the build number is 10B145. The release notes indicate that this update does address those connectivity issues: “This update fixes an issue that could impact cellular performance and reliability for iPhone 4S.” Other reported problems with iOS 6.1, released on January 28th, include battery life and overheating issues. Those do not appear to have been addressed by this update, which is only tackling the iPhone 4S’ data connectivity problems. It’s possible that Apple will release iOS 6.1.1 for other devices soon, if so we will update this post. For now, though, this is just for iPhone 4S owners.