10 Things to Know About the iPhone 6s iOS 9.2.1 Update

iPhone 6s Bug Remains

It's important to know that there is still a widespread iOS 9 bug present on the iOS 9.2.1 update. 

The iPhone 6s battery percentage bug is still around and there's a very good chance you'll see it on your device if you do any sort of traveling in the days or weeks ahead. 

Apple's working on a solution for the bug but it's not clear when that fix might show up. For now, you're left with a manual fix that may or may not work for you and your iPhone 6s.