Samsung

Samsung Notes Not Syncing After One UI 9: What to Do

One UI 9 changed the Samsung Notes file format, and three documented note features can block cross-version sync. Preserve affected notes and wait for Samsung's compatible app update.

Erawish 5 min read
Concept illustration of notes syncing across devices with one cross-version compatibility pause
Concept illustration of notes syncing across devices with one cross-version compatibility pause

Direct answer: Samsung says One UI 9 changed the file format of individual Samsung Notes. Notes that contain dotted pen, masking tape or images inside tables cannot sync with older Samsung Notes app versions. Preserve the affected notes and keep checking for app updates; Samsung says a compatible sync version will be released, but it has not given a date, version number or manual conversion procedure.

This is a cross-version compatibility problem, not evidence that every note or every Galaxy device has stopped syncing. The practical question is whether an affected note is moving between a newer Samsung Notes app and an older version that cannot read all of its content.

Why are Samsung Notes not syncing after One UI 9?

Samsung's current support page says the file format of individual Samsung Notes changed with One UI 9. It also says that some former note features are no longer supported across app versions.

The detailed boundary is specific: a note containing one of three listed features cannot sync with an older version of the Samsung Notes app. That means a phone, tablet or other supported device on an older app version may not receive that affected note even when simpler notes continue to appear.

Samsung does not say that every note is affected. It also does not publish a complete Galaxy model list, a Samsung Cloud migration rule or a universal account-level outage. Treat the note's contents and the Samsung Notes app versions on the devices as the first compatibility clues.

Which Samsung Notes features cause the cross-version sync problem?

Samsung lists three note features:

  • Dotted pen: a note that uses the dotted pen feature may not sync to an older app version.
  • Masking tape: a note that contains the masking tape feature may not sync to an older app version.
  • Images inside tables: placing an image within a note table can trigger the same cross-version limitation.

The list is about content inside an individual note. It is not a statement that all handwriting, every image or every table is unsupported. Do not expand the warning beyond the three combinations Samsung currently names.

How can I tell whether this is the same problem?

  1. Compare devices: check whether the note appears on the device running the newer One UI 9-era Samsung Notes app but is missing from a device with an older app version.
  2. Check the note contents: look for dotted pen, masking tape or an image placed inside a table.
  3. Compare with a simple note: if ordinary text-only notes sync while the affected note does not, that pattern is consistent with Samsung's documented format boundary.
  4. Check for approved updates: use the normal Galaxy Store, Play Store or device update path available to that device and account. Samsung's published advice is to keep checking for app updates.

This checklist helps identify the documented pattern; it does not prove the cause of every sync failure. If no listed feature is present, the account, network, storage or another service issue may require Samsung's normal support path.

Should I delete or edit an affected Samsung Note?

No destructive change is established as the fix. Samsung does not tell users to delete the note, remove the listed features, clear app data, reinstall Samsung Notes, downgrade One UI or move the content to another cloud service.

Preserve the original note on the device where it is available. A missing copy on an older app version does not by itself prove that the original has been deleted or permanently lost. Before experimenting with any copy, confirm that the important content remains accessible on at least one device and avoid replacing the only available version.

If the note is business-critical or needed immediately on another device, contact Samsung Support with the device models, One UI versions, Samsung Notes app versions and the affected feature. That gives support a specific cross-version case to review without risking the original content.

What should I do while waiting for Samsung's compatible sync version?

  1. Keep the affected note intact: preserve the available copy and avoid destructive troubleshooting.
  2. Update through normal channels: check Samsung Notes and system updates on every device that needs the note.
  3. Recheck after both sides update: cross-version compatibility depends on the receiving app being able to understand the newer note format.
  4. Document the versions: record the One UI and Samsung Notes app versions before contacting support.
  5. Use Samsung Support for urgent cases: especially when an important note is unavailable on all expected devices or the behavior does not match the three documented triggers.

Samsung says a compatible sync version will be released, but its support page does not name the version or date. Do not treat a predicted rollout date, unofficial APK or generic sync reset as Samsung's confirmed resolution.

Does the One UI 9 rollout tell us when the fix will arrive?

No. Samsung Mobile Press confirms that One UI 9 is rolling out gradually to more Galaxy devices, beginning with named flagship families, and says availability can vary by device and market. That establishes a growing audience for the compatibility question, but it does not date the Samsung Notes sync fix.

For adjacent rollout context, see Erawish's earlier Galaxy S25 One UI 9 testing guide and Galaxy S23 One UI 9 lifecycle guide. Those pages cover device-update timing and support questions; this page owns the separate note-format and cross-version sync task.

What remains unknown?

  • The exact Samsung Notes app version that will restore compatible sync.
  • The release date and whether it will arrive everywhere at the same time.
  • A complete list of affected Galaxy phones, tablets or other supported devices.
  • Whether Samsung will provide a manual conversion tool for existing affected notes.
  • Whether an unrelated sync failure without the three listed features has the same cause.

Bottom line

The documented One UI 9 problem is narrow but important: newer Samsung Notes can contain features that older app versions cannot sync. Preserve affected notes, update through approved channels and wait for Samsung's compatible sync release rather than deleting content or relying on an unofficial workaround.

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