How to Change a Sleep Record in Samsung Health
Samsung Health is one of the most capable sleep tracking platforms available on Android — but it's not always obvious how to edit, delete, or manually adjust a sleep record after the fact. Whether your phone logged the wrong sleep window, you forgot to wear your Galaxy Watch, or you simply want to correct an automatic entry, here's exactly how the editing system works and what affects your options.
What Sleep Records Samsung Health Actually Stores
Before editing anything, it helps to understand what Samsung Health is tracking. Each sleep record contains:
- Sleep start and end times
- Sleep stages (light, deep, REM, and awake periods) — when detected via a Galaxy Watch
- Sleep score — a composite metric calculated from duration, regularity, and stage breakdown
- Heart rate and SpO2 data — if recorded during the session
The source of the record — phone-only detection vs. Galaxy Watch — determines how much of this data you can edit.
How to Edit or Delete a Sleep Record on Samsung Health
Editing a Record Logged by Your Phone
When Samsung Health detects sleep using your phone's sensors (motion, screen activity), the record is relatively simple and editable:
- Open the Samsung Health app
- Tap the Sleep tile on the home screen
- Scroll to the record you want to change and tap it
- Tap the three-dot menu (⋮) in the top-right corner
- Select Edit to adjust the sleep window, or Delete to remove the entry entirely
- Modify the start or end time, then save
This method works cleanly for duration-based edits. You're adjusting the logged time window, not the underlying sensor data.
Adding a Sleep Record Manually
If Samsung Health missed a night entirely — common when your phone was charging away from you — you can add a record from scratch:
- From the Sleep section, tap the "+" icon or the Add button (placement varies slightly by app version)
- Set your sleep start time and wake time
- Save the entry
Manually added records will show sleep duration but will not include sleep stage breakdowns, since those require real-time sensor input.
Editing Records Synced from a Galaxy Watch
This is where things get more restricted. Sleep data captured by a Galaxy Watch — including sleep stages, heart rate, and SpO2 — is synced to Samsung Health as a completed biometric session. You can delete these records entirely, but you generally cannot edit the start/end times or stage data after the fact without deleting the whole entry.
If a Watch-tracked record shows the wrong window (for example, it logged you as asleep while you were watching TV in bed), your options are:
- Delete the incorrect record and add a manual entry with the correct time window — knowing you'll lose the stage-level data
- Leave it and note the anomaly — Samsung Health averages data over time, so one outlier has limited long-term impact on your sleep trends
Variables That Affect What You Can Edit 🔧
Not every Samsung Health user has the same editing capabilities. Several factors determine what's available:
| Variable | Impact on Editing |
|---|---|
| App version | UI layout and available options vary across updates |
| Record source | Phone-detected vs. Watch-synced records have different edit permissions |
| One UI version | Older One UI versions may have fewer manual entry options |
| Samsung account sync | Records synced to Samsung's cloud may have stricter edit rules |
| Third-party integrations | Records shared with Google Fit or other apps may not update retroactively |
Sleep Score and Stage Data After Edits
One detail worth understanding: editing or deleting a record affects your sleep trend graphs and averages, not just a single night. Samsung Health calculates weekly and monthly sleep scores based on cumulative data. Deleting several records to "clean up" your history will create gaps that shift your averages.
Manually added records contribute to duration averages but are typically excluded from sleep stage analytics, since Samsung Health recognizes they lack sensor-backed stage data. Your overall sleep score may reflect this distinction differently depending on app version.
When Syncing Creates Confusion 😴
If you use both a Galaxy Watch and your phone simultaneously, Samsung Health can occasionally log duplicate records — one from each source covering the same night. In this case:
- The Watch record takes priority in terms of data richness
- You can safely delete the phone-only duplicate
- If both records persist, your duration totals for that night may appear inflated in trend views
Checking the data source label on each record (visible in the detail view) helps identify which entry came from which device before deleting.
The Part That Depends on Your Setup
How straightforward this process is depends heavily on factors specific to your situation — which device you're using, which version of One UI is installed, whether you have a Galaxy Watch paired, and how Samsung Health is configured to sync data. Someone using a Galaxy Watch Ultra on the latest One UI will have a different experience than someone using an older Galaxy phone with phone-only tracking enabled. The editing tools are there, but how much of your sleep data is truly editable — versus read-only sensor output — comes down to how your records were originally captured.