Xiaomi smartphone owners often face a situation where familiar communication indicators suddenly disappear from the screen. The icon of the number or SIM card stops showing, which causes panic among users who fear being left without communication. This is a common problem in the MIUI shell, which can be caused by both software failure and improper interface settings. Restoring the visual display of active communication lines is not difficult, if you know exactly where the right switches are hiding.
Modern Xiaomi devices have a complex menu structure, where notification settings are scattered across different sections. The absence of an icon may mean that the communication module is working normally, but the system simply forgot to display it on the lock screen or in the status bar. In some cases, you need to more deeply interfere with network settings or even reset network modules. Understanding how MIUI works in this part will help quickly regain control of the situation.
In this article, we will discuss all possible causes of the disappearance of indicators in detail and offer step-by-step solutions, you will learn how to force the display of icons through the engineering menu or standard settings. SIM-- cards when one of the slots is no longer visible to the system.
Checking the basic display settings in MIUI
The first step is to make sure that the icon display option has not been accidentally disabled in the main settings of the system. In new versions of the HyperOS shell and MIUI 14, the path to these parameters may differ from the usual one. Often users inadvertently change the theme of the design or install third-party launchers that hide standard interface elements, including SIM indicators.
Go to the settings menu and find the notification and status section, and there should be a point that regulates the visibility of carrier icons. If the slider is off, the system won't show which card is active at the moment, and this is especially true for dual-slot models, where it's important to see the difference between the main and the secondary numbers.
💡
If the standard path in settings does not lead to the result, try temporarily switching the theme to the standard Classic – this often returns missing system icons.
Sometimes the problem is in the cache of the Themes or Security system application, and cleaning up the data of these services can force the interface to be updated. Don't be afraid to reset the display settings, because your personal data, contacts and photos will not be affected. The system will only return the visual elements to the factory view.
Setting up SIM-cards and slots management
The central node of communication management in Xiaomi smartphones is a section «SIM-This is where you can not only turn on or off a particular slot, but also set the priorities of the Internet and calls. If the number icon is missing, it may be that the SIM card itself was software-activated in this menu, even if it is physically installed correctly.
In this section, you'll see a list of all available slots. Make sure the switch opposite the number is activated. The system allows you to flexibly adjust the behavior of each card: you can assign one for voice communication and another for data transmission only. The absence of an icon often indicates that the system can not read the operator's data due to a conflict of settings.
☑️ Diagnostics SIM-map
It is worth noting an important nuance for users using virtual SIM cards or eSIM. In such cases, the icon may look different or require a separate profile activation in the settings. For physical cards, it is important that the contacts on the golden surface are clean. Contact oxidation is a common reason why the smartphone stops “seeing” the module and, accordingly, hides its icon.
⚠️ Attention: When removing the tray SIM-Make sure the phone is turned off or in flight mode.Hot card swaps on some Xiaomi models can cause damage to the power controller or software freezes the communication module.
Using the Engineering Menu for Diagnostics
If standard methods don't help you get the network icon back on the screen, an engineering menu comes to the rescue, and it's a hidden part of the system that's designed to test the hardware, and you can check the modem status, signal strength, and force a network search, which often solves the missing indicator problem.
To enter the diagnostic menu, a special code is usually used in the Phone app. Dial the combination ##4636##. If the code works, a hidden testing menu will open. Here you need to select Phone Information. This section displays the current status. SIM-maps, network type and signal level in numerical terms.
Inside the engineering menu, you can find a Turn On Radio or similar button, and if the radio is turned off, there will be no display of the number icon, and you can also find Run Ping Test or Refresh, which causes the modem to re-register in the operator's cell, which often returns the missing indicator.
What if the code doesn't work?
Reset network settings and APN access points
One of the most effective ways to eliminate software bugs is to reset your network settings, which does not delete your personal files, but returns all connection settings (Wi-Fi, Bluetooth, Mobile Internet) to factory values, which helps if configuration files have accumulated errors that prevent the correct display of SIM status.
To perform the reset, go to Connect and Sharing or Advanced Settings, and find Reset Wi-Fi, Mobile and Bluetooth. Confirm the action. Once you reboot your phone, you'll have to re-enter your Wi-Fi passwords, but the system will re-initiate the connection to the operator, which should restore the icon.
Special attention should be paid to APN access points. If the Internet settings are down, the phone may consider the network unavailable. There is a section on the mobile network menu called “Access Points (APN)”. Click on the menu (three dots or Reset button) and select “Restore by default” This action will correct errors in the Internet settings of a particular operator.
| Parameter | Default value | Possible mistake | Decision |
|---|---|---|---|
| Type of network | LTE is preferred | Only 2G/3G | Select LTE/4G |
| Data roaming | Off. | Included (homes) | Disable off-travel |
| Access Point (APN) | Automatically. | Empty field | Reset the settings |
| Protocol APN | IPv4/IPv6 | Only IPv6. | Replace with IPv4/IPv6 |
Problems with displaying the second SIM-map
Owners of two-sym Xiaomi devices often complain that the second number icon disappears while the first one works normally.This may be due to firmware restriction or frequency conflict.In some regions or on certain versions of MIUI, the second slot can only work in 2G/3G mode, and if the operator has disabled these standards, the icon can behave unstablely.
Check if there is only 4G for both cards at the same time. Technically, most modems cannot support two 4G channels simultaneously in active standby mode without using VoLTE technology. If VoLTE is not supported by the operator, the system has to switch one of the cards to a lower standard, which sometimes causes a visual bug with the icon disappearing.
Try swapping the SIM cards in places. If the problem goes to another slot, it means that the card itself or its compatibility is at issue. If the icon disappears from the second slot, regardless of the card, there may be physical wear and tear of the contacts in the tray or a software restriction on the regional version of the smartphone.
⚠️ Note: Do not use homemade adapters to turn microSD into a microSD. SIM A loose fit or short circuit of the contacts can burn the controller. SIM on the motherboard, after which the icon will not appear even after flashing.
Update firmware and reset to factory settings
If none of the above has worked, it could be a bug in the current version of the operating system. Xiaomi developers regularly release updates to correct errors in the radio module, check for updates in the section “About the phone”. Sometimes installing the current version even on top of the current one helps (through three dots in the corner of the screen).
In the extreme case, when the problem is systemic and prevents the full use of the device, there is a complete reset.Be sure to back up all important data before this procedure, since the phone will return to the state of “from the store”. After resetting and initial setting, the icons of the number should appear if everything is in order with the hardware.
Remember, after the reset, the system will reset the network profile, which can take up to 10-15 minutes. Don't panic if the icon doesn't appear immediately after you turn on. Give the smartphone time to register with the network, especially if you're in an insecure reception zone.
💡
Full resetting eliminates 95% of software conflicts related to the display of the interface and the operation of communication modules, but takes time to recover data.