
I am not going to talk about how to back up your iPhone notes through iTunes or iCloud before updating to iOS 9 step by step. As there are detailed demonstration illustrated with pictures at Apple Support Center.
Instead, I would like to introduce a couple of ways that can back up iPhone notes selectively.
Method 1: Export iPhone Notes Selectively To Computer
If you value your iPhone notes very much, you’d better back up your iPhone notes before the iOS 9 updating selectively to your computer, no matter you are using Windows or Mac. iFonebox, as professional iOS data recovery and exporting software, can export all your iPhone notes from iPhone, iTunes or iCloud backup file to computer for record keeping.
You can download a free trial version to have a try at first before you decide to pay for the full version.
Here are the steps about how to back up your iPhone notes before iOS 9 updating by exporting them directly from iPhone and transfer to computer.
Step 1: Install and Connect
Install the full version of iFonebox and start it up. Connect your iPhone to your computer. Wait for the recognition of your iPhone by iFonebox and hit the button of “Start”. In this way, you have chosen the recovery mode of “Recover from iDevice”

Note: Please choose the right version to download and install according to what kind of computer you are using. If your iPhone is not detected by iFonebox, please check whether you have unlocked your iPhone with the passcode, and whether you have hit “Trust this computer “on your iPhone screen.
Step 2: Choose Note to Export Selectively
iFonebox will show you an interface listing all the supported data categories for you to choose. Click on the data category you want to export and transfer. Since you just want to back up notes only, you can just click on the icon for the Notes App selectively.

Step 3: Preview and Transfer To Computer
It will take some time for iFonebox to scan and analyze the notes items on your iPhone, please wait with patience. You can take a preview at the exported notes items and do some modification about them before transferring to computer if you prefer.

Method 2: Sync iPhone Notes to your Email Account
You can also choose connect an email account which you use the most to sync your iPhone notes.For detailed steps, prefer to the tips post “How to sync notes to Gmail account?”