Notes app
I lost some information in my notes app and I haven't been able to retrieve. I restored and did the backup in ICloud unsuccessfully also. Are there any other things that I can try?
iPhone 6, iOS 9.0.1
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Apple is introducing a new Apple Watch Pride Edition Braided Solo Loop, matching watch face, and dynamic iOS and iPadOS wallpapers as a way to champion global movements to protect and advance equality for LGBTQ+ communities. Learn more >
I lost some information in my notes app and I haven't been able to retrieve. I restored and did the backup in ICloud unsuccessfully also. Are there any other things that I can try?
iPhone 6, iOS 9.0.1
iOS 9 updated notes, and offered you an opportunity to upgrade your Notes when you first opened the app.
Consider this when seeking your missing notes. You may or may not have other Apple devices, which may or may not have been upgraded.
Upgrade your notes with iOS 9 and OS X El Capitan - Apple Support
Notes can store it's data either locally "on my iPhone", on iCloud, and also on other cloud email services like Gmail or Exchange. Therefore, it's possible that your notes are stored somewhere other than the accounts that are currently enabled for Notes. First, make sure that you have Notes enabled in iCloud settings. Then go to each email account settings that you use on the iPhone and make sure that Notes is toggled on for them as well.
Then, in Notes, keep touching the back arrow "<" in the upper left of the screen until you get to the list of storage locations. That window will show you how many notes you have stored in each storage location. Hopefully you will find your lost notes there on a server that you didn't expect.
Notes app