Samsung Galaxy alarm not going off? 6 things to check

By · 2 min read · 6 steps · Updated 5 October 2026 · ▶ Video demo

Short answer

In the Clock app, check the alarm is switched on and set for the right days. Open the alarm and check Alarm sound and its volume slider. Then check the Clock settings switch Silence alarms when system sound is off, Do not disturb, and that Clock is not a sleeping app.

Device
Android
Shown on
Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16
App
Settings
Real screenshots
5 of 6 steps
Checked
October 2026
Sources
3 official, linked below

Step by step

  1. Android screenshot: Check the alarm is on

    Check the alarm is on

    Open the Clock app. Each alarm has its own switch. Ours was off, so the page said All alarms are off.

  2. Android screenshot: Check the days

    Check the days

    The dots over the letters show the days it rings. Ours was set for weekdays only, so it would stay silent at the weekend.

  3. Android screenshot: Set the volume inside the alarm

    Set the volume inside the alarm

    On our phone the Alarm slider in Settings, Sounds and vibration, Volume was greyed out: alarm volume is set for each alarm in the Clock app. Open the alarm, tap Alarm sound and drag its slider up.

  4. 1Clock2Three dots3Settings4Silence alarms when systemsound is off

    Check Silence alarms when system sound is off

    In the Clock app, tap the three dots and Settings. With this on, alarms stay silent when the phone is on Vibrate or Mute.

  5. Android screenshot: Let alarms through Do not disturb

    Let alarms through Do not disturb

    Settings, Notifications, Do not disturb, Alarms and sounds. Make sure Alarms is allowed.

  6. Android screenshot: Keep Clock out of deep sleep

    Keep Clock out of deep sleep

    Settings, Battery, Background usage limits. Make sure Clock is not in Deep sleeping apps, and add it to Never auto sleeping apps.

About this guide

A missed alarm usually comes from one of a few settings, most of them inside the Clock app itself.

The screenshots are from a Samsung Galaxy A57 5G with One UI 8.5 and Android 16. Other Galaxy phones on One UI 8 use the same menus; on older One UI versions a few names and positions differ. Our only alarm was switched off; we did not change it.

Good to know

A connected Bluetooth headset can play the alarm in your ears instead of through the speaker.

More on sleeping apps: how to put apps to sleep on a Samsung Galaxy phone.

In short: Alarm switch on, right days, volume inside the alarm, Clock settings, Do not disturb, Clock not sleeping.

Sources

Links checked on 4 October 2026. Rules and prices change. Check the official source before you act.