A Good iPhone Upgrade Procedure

Preliminary note: rarely, voicemail and text messages are lost after an upgrade. If any of these are important, save them elsewhere before upgrading. (This may require using a Mac and additional software). Contact me if you need help with this.

Steps to Upgrade

If you don't have time for all of this, then you don't have time to upgrade.

Learn about iOS 10

Since it will take 30-60 minutes to upgrade your device to iOS 10, I recommend reading about the new features as you wait. A good place to start is iMore’s iOS review. There’s a lot to cover, so you may want to practice with only a few features at a time.

Read This If You Have an Older iPhone

Because of changes in hardware, some parts of iOS 10 don’t work on older devices. The Mac Observer explains what’s missing.

Home Button Changes

We’re all so used to pressing the home button or swiping to unlock, and iOS 10 really doesn’t want you to try either of those gestures.
— Jason Snell, sixcolors.com

If you don’t use TouchID, now is the time to try it again. Apple wants to make the iPhone more useful without requiring anything more than picking up the device—while at the same time keeping most of your data secure. TouchID and iOS 10 is their answer.

The swipe to unlock is gone. You can still use your passcode to unlock, but after the lock screen is visible you’ll tap the home button to bring up the number pad.

Read more abut the home button and other lock screen changes on Six Colors: Getting iOS 10 right from the start.

Messages!

Messages is the biggest whizz-bang feature in iOS 10, and all the changes can be overwhelming. Six Colors has two articles that are worth checking out:

Messages on iOS 10: Better features, worse usability 

Dealing with the deluge of iMessage apps and stickers

Have fun!