Modern smartphones, especially Xiaomi models, offer a lot of features for personalization, but sometimes basic settings are lost after a firmware update. A situation where the user does not see missed calls can lead to serious problems, whether it is an important work call or an urgent message from a loved one. MIUI The new HyperOS process is supported by complex energy saving mechanisms.
The problem is often not hardware failure, but software constraints that the system imposes on background processes, and missed calls may be blocked by aggressive power saving mode or incorrect permissions for the Phone system application, and understanding how these hidden settings work will help quickly restore the functionality of the device without going to the service center.
In this article, we will take a closer look at all the possible causes of the lack of alerts and provide step-by-step instructions for eliminating them, where to find hidden switches in the developer menu and how to properly configure system applications so that no important contact is left unnoticed, this guide is relevant for most current brand models.
Check the basic settings of the phone application
The first thing to do when you don't respond to incoming calls is to check the standard settings of the system "caller." Often users accidentally turn off pop-ups or change the theme of the design, which hides the visual indicators. Go to the Settings menu, find the Applications section and select All Apps.
In the list, find the Phone (or Dialer) app, and within its properties, we're interested in the Notification tab, and the "Allow Notifications" slider should be activated here. If this switch is turned off, the system won't physically be able to show you information about the missed event. Make sure that the "Sound" and "Pop-up Notifications" sub-clause are also activated.
Special attention should be paid to the category of notifications "Missed calls." In new versions of the MIUI shell, the notification settings are detailed, and you can separately manage the volume and importance for different types of events.
- 📞 Open the settings of the application "Phone" through the general menu of applications.
- 🔔 Check if the main notification switch is activated.
- 🔊 Make sure you select sound for the category "Missed" and not "No Sound" mode".
- 📱 Check if pop-ups are allowed on a locked screen.
⚠️ Warning: If all the switches fail to show notifications, try clearing the phone app cache, which won't delete your call history, but will reset temporary files that may have caused the crash.
💡
If the standard app doesn’t work properly, try installing an alternative call from Google Play, such as Truecaller, and assigning it to the default app to check the network.
Configuring energy saving and auto-start
Xiaomi systems are notorious for aggressive memory management. To extend battery life, the operating system can completely kill background processes, including the process of handling phone calls, which is why it is critical to set up AutoRun and remove battery limitations for system services.
Go to the Security app (green zipper icon) that is preinstalled on each device of the brand. Find the Permissions section and select AutoRun. In this list, you need to find the Phone app and activate the switch opposite it, and this will give the system a command to start the call service immediately after you turn on the smartphone.
Then go back to the application settings, select Phone, and go to Power Saving (or Battery) and select No Limits. The standard Charge Saving mode can prevent push notifications from arriving on time if the device screen is gone. No Limits mode is a prerequisite for stable telephony operation on MIUI.
☑️ Setting up energy saving
It's also worth checking if the phone has a global power saving mode activated. If the battery icon is on in the status bar, the system can block background synchronization and notifications, and turn off Ultra or Standard Savings modes if it's critical that you keep your calls off.
Working with Do Not Disturb Mode and Profiles
Often users block notifications by accidentally activating special modes. Do not disturb (DND) mode completely prohibits audio and visual signals, except as provided in the exceptions. Check the control panel (curtain) if there is an activated crescent icon.
If the mode is active, go to Settings → Sound and vibration → Do not disturb. You can set exceptions here, for example, allow repeated calls from the same numbers for 10 minutes or allow calls from favorite contacts, this is a flexible setting that allows you not to miss important, but ignore spam.
Also worth checking is the Google Assistant profile or automation scenarios. A smartphone can automatically turn on silence on a schedule or when in a certain place (geozones). Make sure that the Digital Well-being section does not set limits on phone use or sleep mode, which may limit functionality.
- 🌙 Check the notification curtain for active "Do Not Disturb" mode".
- 📅 Study the schedule of inclusion of quiet mode in the sound settings.
- 📞 Set up exceptions for repeat calls on the menu DND.
- 🤖 Check out automation scenarios in Google Assistant.
⚠️ Warning: Do Not Disturb mode can be activated automatically if you turn your phone down, a feature called "Flip for Silence" that is in gesture or sound settings.
Comparison of MIUI and HyperOS settings
With the release of the new HyperOS operating system, the menu structure has changed a little, although the logic has remained the same. Users who have updated with MIUI 14 may have difficulty finding old items. Below is a table that helps you navigate interface differences when setting up notifications.
| Function | Location at MIUI 12-14 | Location in HyperOS | Importance of customization |
|---|---|---|---|
| Management of notifications | Settings → Applications → All applications | Settings → Applications → All applications | Critically. |
| Auto-start | Security Annex → Permits | Settings → Applications → Permissions | Tall. |
| Energy saving regime | Settings → Battery | Settings → Battery | Tall. |
| Systemic sounds | Settings → Sound and vibration | Settings → Sound and vibration | Medium |
HyperOS also has a smart windows feature and a deeper viewing of notifications. If you've recently upgraded, it's worth checking all the items again, because resetting the settings when you upgrade could bring back factory restrictions. The settings interface has become more logical, but some items have been renamed or moved to the submenu.
Do not ignore system updates. Often security patches fix bugs related to the radio module and Push services. If the problem occurs after an update, you may need to clean the Wipe Cache Partition via Recovery Mode, but this action requires caution.
Specifics of working with SIM-map-and-operator
Sometimes the problem is not with the phone's software, but with the services of the cellular operator. The number detector or live definitions that operators (MTS, Beeline, Megaphone, Tele2) offer can conflict with the system call. They intercept the incoming call, and if their application is not working correctly, the standard missed notification may not come.
Try to temporarily disable the number identifiers through the operator’s personal account or USSD-Also check if the forwarding service is activated. If the call is forwarded to another number or voicemail too quickly, the phone may not be able to record the event as missed, believing it to be redirected.
In the settings SIM-maps (in the Settings section) → SIM-Maps and mobile networks) make sure you choose the right card for default voice calls if you have two. SIM-cards sometimes lead to the fact that notifications about missed on the second SIM do not come while the screen is active or the Internet is used on the first SIM.
- 📡 Check the list of active services with your mobile operator.
- 🚫 Disable third-party number detectors for the test.
- 🔄 Reinstall. SIM-Card to another slot or clear contacts.
- 📞 Check the status of call forwarding.
How to reset network settings?
Additional diagnostic and resetting methods
If none of the above methods worked, there may have been a deep system failure. In this case, you can try resetting the settings of the caller apps. Go to Settings → Apps → All apps, find the Phone and click Clear → All data. Attention: this can delete the call history, so it is recommended to back up contacts.
Another effective method is safe mode: boot the phone in safe mode (usually by pressing the turn off button, then pressing the turn off button for a long time on the screen). If notifications come in safe mode, then some third-party application you installed is causing the problem.
As a last resort, if the problem persists and interferes with normal life, you may need to completely reset the device to factory settings. Before that, be sure to save all the important data to the cloud service or computer. Often, it is a complete reset after a major update to the Android version that solves all the accumulated conflicts.
⚠️ Warning: Full Hard Reset will remove all data from the internal storage. Make sure you have an up-to-date backup of photos, documents and correspondence.
💡
If software methods do not help, the problem may be hardware (an antenna module malfunction), which requires diagnosis in the service center.