How can I recover a disappeared notes from my iPhone?

Achelos wrote:

I also have a similar problem. Most of my notes are available but a couple of important notes have vanished from client devices and iCloud with none appearing as Deleted items.

Have you recently canceled an email account, or disabled it on your phone. Notes sync to email servers (except for “on my iPhone” notes), and will be removed if the account the note is tied to is removed.

Notes sync to email accounts. Have you recently deleted an email account, or changed the password on an account that you didn’t update on the iPhone?

I faced a similar issue when I searched for a crucial note and discovered that it was no longer available in the Notes app. This seems to indicate a possible bug, because if the note had been deleted accidentally, it should have appeared in the Deleted Items folder. I'd suggest you to open a case with Apple Support.

I have been experiencing persistent issues with Apple Notes since iOS 18, and the situation has worsened after updating to iOS 26. Several handwritten notes have disappeared or display only the title upon opening. In addition, images within certain notes no longer appear on some devices, further exacerbating cross‑device inconsistencies. My Notes library is approximately 1.5 GB, and many entries are now unusable or show conflicting versions across devices. This inconsistency has significantly impacted reliability, and the app is no longer usable with confidence.

How am I able to open a with Apple Support?

To be clear, the note is still there, but it’s content is missing?

I also have a similar problem. Most of my notes are available but a couple of important notes have vanished from client devices and iCloud with none appearing as Deleted items.