You Should Prepare for iOS 10.3.3
If you still haven't installed iOS 10.3.3 on your iPhone 5s but you plan to, make sure you do some prep work before you do.
It's impossible to predict what kinds of issues you'll encounter once you make the move to iOS 10.3.3. You could see issues popup during the install, you could see battery drain right after the update finishes, you could run into major problems a week after the download is complete.
To ensure that you keep your mental sanity, we highly recommend doing some pre-installation prep on your device.
We've put together an extensive game plan that will take you through some of the basics including the proper way to backup your iPhone and some strategies we use to limit problems. At the very least you'll want to backup all of your important files.
If you're new to iOS, a novice iOS user or if you simply need some additional help, take a look at our walkthrough.