How to Prepare for the iPhone 7 iOS 10.2.1 Update
It's impossible to predict what you might encounter after you install the iOS 10.2.1 update on your iPhone 7. Some of you might come through the process unscathed. Others might run into some serious problems. There's no way to know.
This is why we always recommend doing some prep work before you install an iOS update. There's potential for a lot to go wrong.
To assist you in this endeavor we've put together a list of steps to take before installing the software on your phone. These are the steps we typically take before we install a new piece of software and they will help you keep problems and headaches to a minimum.
You don't have to follow every single step but you'll want to make a backup of your important files at the very least.
Prepare for iOS 10.2.1 and you should come out of the process unscathed.