How to Fix iPhone 7 iOS 10.2.1 Problems
If you do run into an iOS 10.2.1 problem on your iPhone 7 there's no need to panic. You'll probably be able to fix it on your own.
We've put together a list of the most common iOS 10 problems and fixes for those problems. These fixes have worked for us and many others and they're worth a look if you're running into something you can't fix off the top of your head.
If you're running into problems with your iPhone 7's battery life, take a look at our list of fixes for iOS 10 battery drain issues. You might find what you're looking for there.
If nothing there works, and it might not, you can find a list of solid resources here on our iOS 10.2.1 problems roundup.