The sudden disappearance of the call button on the screen of Xiaomi smartphone can take any user by surprise. It would seem that a simple interface element becomes critical when you need to make an urgent call. Most often, the problem lies not in the breakage of the screen, but in a software failure or accidental change in the launcher settings. MIUI system is known for its flexibility, but this often leads to the fact that the user is lost in the menu and can not find the missing item.
There are several main scenarios for why the phone shortcut or dial key itself might have gone missing, including a crash of the phone app, a cache overflow, or even a system process blocker with an antivirus. In some cases, users hide the icon themselves by moving it to a hidden folder or deleting it from the desktop, forgetting about it. Before panicking, it’s worth checking consistently the main points of failure, ranging from simple reboots to more complex manipulations of system files.
In this article, we will look at all the possible causes and provide step-by-step instructions for restoring call functionality. You will learn how to return the shortcut to the desktop, how to reset the settings of the Phone application, and what to do if the problem lies deeper in the system. Careful follow-up to the instructions will help avoid data loss and unnecessary access to the service center. Recovery of the communication module is a task that can be solved at home.
Diagnostics of the problem: label or functionality
The first thing you need to do is clearly identify the nature of the malfunction: is it the application icon on the desktop that is missing, or is the dialing function itself stopped working? If you see the handset icon when you open the menu of all applications, but it is not on the main screen, then the problem is solved by simply dragging the widget. However, if the phone application does not start at all or crashes immediately after opening, this is a more serious software conflict.
Users often confuse the absence of a call button with the disabling of the Quick Call function or the disappearance of the call completion button during a conversation. In the MIUI interface, different modules answer for these functions. If you lose the break button (red tube) during a conversation, this may be due to the proximity sensor or the design theme. In the case of complete absence of the ability to dial the number, you need to check whether the application itself is disabled in the system settings.
⚠️ Warning: If the dialing panel is completely missing and even emergency calls are not working, check if Do Not Disturb or Air Mode is on. Sometimes the system blocks the call interface when active restrictions are in place.
For an accurate diagnosis, try using Google Assistant or XiaoAI. Say "Call..." and name the contact. If the call goes well, the communication module is intact, and the problem is only in the launcher's GUI. If the voice assistant says that it can't find the call app, you'll need to thoroughly clean up the system services.
Restore the label on the desktop
The most common case is that a user accidentally removed the shortcut from the home screen or moved it to a folder. In the MIUI shell, the desktop and application menus can work in different modes. If you have classic mode on, all shortcuts are on the tables. If the "No menu" mode, then you should look for shortcuts among all installed programs.
To return the button, open the menu of all the apps, usually a swipe up the center of the screen or a separate button in the dock bar. Find the standard Phone app (green tube icon). Hold your finger on the icon and drag it to the free desktop space. If the system says that the widget is busy or moving is impossible, try first removing the extra weather or calendar widgets that may be blocking the cell.
In some design themes, the icon can be hidden or replaced with a transparent one. Change the theme to a standard one through the Themes app to eliminate the visual bug. Also check if Hidden Apps are included. To do this, look for the Hidden Apps section in the Security app and make sure that Phone is not added to this list.
- 📱 Open the menu of all applications swipe up.
- 🔍 Find the standard “Phone” or “Calls” app».
- ✋ Press the icon and drag it to the main screen.
- 🎨 Check if the current theme is hiding the icon (change to the standard one).
If the label returns to its place but disappears after a while, it may indicate that the Optimizer of the system is working. MIUI sometimes automatically removes shortcuts that it believes are rarely used, although it should not touch system applications, in which case it is worth fixing the application in memory or turning off aggressive energy savings for system processes.
☑️ Label check
Cleaning up data and resetting the phone application
When the shortcut is in place but the call button doesn't respond to clicks or the app crashes, you need to clean up the cache and data.This won't delete your contacts as they're stored in a separate Google Contacts or MI Cloud repository, but reset the settings of the call itself, such as call history and conversation records.
To do the procedure, go to your smartphone settings. Find the Apps section, then select All Apps. In the list, look for Phone (may be called Calls or have a Google logo depending on the firmware version). Click on it, then select Memory. Here you click two buttons: Clear cache and Clear data.
Settings → Applications → All applications → Phone → Memory → Clear dataAfter this operation, the phone may reboot or simply update the interface. Try to make a test call. If the problem was corrupted temporary files or a conflict of settings, the functionality should recover. In Android 11 and above, access rights may be limited, so make sure that the application is allowed to display on top of other windows.
| Action. | Impact on data | Need for a reset |
|---|---|---|
| Clearing the cache | Secure, data is stored | Not required |
| Clearing the data | Wipes history and records | Preferably. |
| Removal of updates | Returns the factory version | Required. |
What to do if the “Clear Data” button is inactive?
Setting up navigation buttons and virtual keys
Sometimes, what people call is not an app shortcut, but a software keyboard or navigation button that allows you to curl a call or complete it. In newer versions of MIUI and Android, gesture control can hide traditional buttons. If you don't feel comfortable managing swipes, you can return classic buttons.
Go to the settings, select "Advanced" or "Advanced Settings," then "Fullscreen," and you can switch from gesture control to "Buttons," and that brings back three classic keys: "Back," "Home," and "Menu," which often helps when you call, if the touchpad is not behaving properly.
You should also check the special settings. Advanced settings → Special Options has a Virtual Button (similar to AssistiveTouch) that can be configured to trigger the Phone app or call a selected contact when either a single or double tap is stopped.
- 🔧 Go to Settings. → Additional settings.
- 🖱️ Select the item "Full screen mode».
- ✅ Activate the button switch instead of gestures.
- ⚙️ Configure the Virtual Button function for quick access.
Remember that turning on a virtual button can block part of the screen in games or videos, but for people who have lost the physical ability to click on certain areas of the screen, this is a salvation: adjust the transparency and position of the floating button for maximum comfort.
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Use the One-Hand Control feature in the screen settings. By moving the keyboard down, you can access the call button if it is out of reach on Xiaomi’s big screens.
Solving problems with the proximity sensor and screen
When the call button (especially the call end button) disappears just as the phone is being held up to your ear, it indicates that the proximity sensor malfunctions or is contaminated. The screen goes out so that you don't accidentally drop the call with your cheek, but if the sensor is stuck, the screen may not turn back on and you won't see the shutdown button.
You can check the sensor's performance through the engineering menu. Dial ##6484## (or #4636## on some models). Select Proximity sensor from the testing menu. Cover the top of the screen with your palm, the value should change from 5.0 to 0.0. If no changes, the sensor is contaminated or damaged.
To calibrate the sensor, there's often a Calibration item in the same engineering menu. Follow the instructions on the screen: close the sensor, remove your hand, press the calibration button. After a successful procedure, restart the device. If calibration doesn't work, there may be a protective film on the screen that override the sensor, or there's mechanical damage.
⚠️ Warning: Do not use magnetic cases or holders in the car if you often have problems with the proximity sensor.The magnetic field can distort the sensor readings, which will cause the screen to go out at inappropriate moments, hiding the control buttons.
In rare cases, static electricity is the problem. Remove the case, wipe the screen with a soft cloth, and try to discharge the static voltage by touching a grounded metal object. If the screen stops responding to touch only in certain areas (for example, where the button should be), this can be a sign of partial detachment of the display plume.
Resetting and extreme measures
If none of the above methods helped to return the call button to Xiaomi, there is a complete reset option. This is a radical method that will return the phone to a factory state. Be sure to back up all important data before starting the procedure, as all information will be deleted.
Resets can be done via the Recovery menu. Turn off the phone, then press the power button and the volume button at the same time. Hold them until the Mi logo appears. From the Recovery menu, select "Wipe Data" → "Wipe All Data." Confirm the action.
Once the phone is rebooted, it will look like new, and if, in its clean state, without third-party launchers and themes installed, the call button is missing or not working, it is likely to indicate a hardware malfunction, in which case the software methods are powerless and a diagnostic at the service center is required.
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If after a complete reset (Wipe Data) the problem with the call button persists, the reason lies in the hardware of the smartphone (plate, touchscreen, motherboard), and repair is required.