Did you set an alarm on Xiaomi or Redmi, but it didn't work at the appointed time? This problem is familiar to many owners of the brand's smartphones - from the budget Redmi Note to the flagship Xiaomi 14. The reasons can lie in both banal user errors, hidden system settings or even hardware malfunctions.
In this article, we’ll look at all the possible reasons why Xiaomi’s alarm clock might be silent, from the sound turned off to conflicts with MIUI firmware. You’ll get step-by-step instructions to diagnose and fix the problem, and learn how to prevent future failures. We’ll focus on hidden power saving settings that block the alarm clock from running in the background, the most common reason on MIUI 12-14 devices.
1. Checking the basic alarm clock settings
Before digging deep into your system settings, make sure that the problem isn't an elementary error. Often users forget the obvious things:
- 🔔 The alarm clock sound is off – check the volume slider in the Watch app or on the sidebar.
- 🕒 Wrong time – if the phone has a lost date/time, the alarm will go off at the wrong time (or won’t work at all).
- 🚫 The alarm clock is off. MIUI It is easy to accidentally swipe the switch to the “off” position when editing.
- 📱 The phone has been turned off/rebooted – the alarm clocks of the standard Watch app do not work when the device is turned off (unlike some third-party apps).
How to check:
- Open the Watch app → Alarm clock.
- Make sure that a blue switch (incl.) is lit next to the desired alarm clock.
- Press the alarm and check: Time and days of the week (if the alarm is repetitive) Sound (should not stand "No Sound" or "Vibration" if you need an audible signal) Loudness (in the alarm settings or through the volume buttons when it is triggered).
⚠️ Note: Some Xiaomi models (e.g. Redmi) 9A POCO M3) The alarm clock may not work if the phone is down to 0% and turned off. Even if you then turn on the charger, the alarm clock does not activate until the system is fully activated.
2. Energy saving and background activity: the main enemies of the alarm clock
The most insidious reason is the battery optimization in MIUI, which aggressively shuts down background processes, including the Watch app, to save charge, and as a result, the alarm simply doesn't get the signal to go off.
How to fix it:
- Turn off optimization for the Watch app: Go to Settings → Apps → Application Management. Find the Watch and select Battery Limits. Set No Limits.
- Add "Clock" to autorun exceptions: In the same settings of the Watch app, find Autorun. Turn on the switch (if it's turned off).
- Turn off Energy Saving mode: Go to Settings → Battery and Performance → Energy Saving mode and turn it off. In extreme cases, leave Balanced mode, but not Super Energy Saving.