howtosimply.com/guides/samsung-do-not-disturb-turning-on-or-off-by-itself-what-to-check/ · Checked October 2026 · Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16

In this guide

Open Do not disturb
Check For how long
Check the schedules
Change or delete a schedule
Check the Sleep mode
Calls still coming through?
Find the button in the quick panel
If you do not see this option
If this does not work
Good to know
Video demo
Sources

Quick answer

Open Settings, Notifications, Do not disturb. A schedule such as Sleeping switches it on and off at set times, and For how long decides when a manual Do not disturb ends. Also check whether the Sleep mode in Modes and Routines turns on Do not disturb.

7 of 7 steps with real screenshots · 2 official sources below

Device: Android
Shown on: Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16
App: Settings
Path: Settings › Notifications
Real screenshots: 7 of 7 steps
What we did: Observed: looked at each screen, changed nothing
Our phone: Shown on Galaxy A57, One UI 8.5
Checked: October 2026
Sources: 2 official, linked below

Step by step

Open Do not disturb
Open Settings, Notifications, Do not disturb. The switch at the top shows whether it is on right now. You can also touch and hold the Do not disturb button in the quick panel.
Watch these steps Done
Check For how long
For how long decides when Do not disturb ends after you switch it on yourself. Ours says Ask every time, so the phone asks each time. If a fixed time is set here, it switches off on its own when the time is up.
Done
Check the schedules
Under Schedule each entry turns Do not disturb on and off at set times. Our phone has Sleeping, every day from 22:00 to 07:00, with its switch off. If a schedule is on, that explains Do not disturb starting at night and ending in the morning.
Done
Change or delete a schedule
On our phone Sleeping sits under Schedule, above Add schedule, with its switch off. Tap the schedule to change its days and times, or to delete it.
Done
Check the Sleep mode
Open Settings, Modes and Routines. On our phone Sleep has no Not set label, while Theater, Driving, Exercise and Relax say Not set. Tap a mode to see what it changes, and check whether it turns on Do not disturb.
Done
Calls still coming through?
Back on the Do not disturb page, tap Calls and messages to see who gets through. On our phone it is set to Allow only selected contacts, with Add contacts below it. Only the contacts you select are allowed while Do not disturb is on. Repeat callers lets a second call from the same number within 15 minutes through.
Done
Find the button in the quick panel
Open the quick panel and expand the grid of buttons. On our phone Do not disturb is in the third row, after Eye comfort shield. Tapping it is the quickest way to switch it off.
Done

Watch these steps

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If you do not see this option

There is no Add schedule On some phones, Samsung says, you tap Turn on as scheduled instead, then Add (the plus sign) at the top right. Source: Use Do not disturb mode on your Galaxy phone
Do not disturb is not under Notifications Samsung says to search Settings for Do not disturb, or touch and hold the Do not disturb button in the quick panel. Source: Use Do not disturb mode on your Galaxy phone

If this does not work

It turns on with your Galaxy Watch Samsung says the Wearable app can sync Do not disturb between phone and watch: Watch settings, Notifications, Sync Do not disturb with phone. Turn the sync off if you want them separate. Source: How to use Do not disturb mode on your Samsung Galaxy Watch series
Calls still come through with it on Samsung says the Allowed during Do not disturb section lets calls and messages, app notifications, and alarms and sounds through. Check each one. Source: Use Do not disturb mode on your Galaxy phone

About this guide

Do not disturb almost never switches by itself: a schedule, a time limit or a mode does it. All three live in a few places, and the Do not disturb page shows most of them at once.