When text messages stop coming to Xiaomi’s smartphone, it can be taken by surprise at the most inopportune moment, especially when you expect a confirmation code from a bank or important information from colleagues. Today’s smartphones, powered by MIUI or HyperOS, have a complex optimization system that sometimes works against the user, blocking standard communication functions.
The reasons for the failure can be both software errors of the operating system and incorrect settings of the communication module itself. Often the problem is solved by simply rebooting or changing one parameter in the settings menu, but sometimes a deeper intervention is required. In this article, we will discuss all possible scenarios and ways to fix them.
Before we go to radical methods like resetting, we need to rule out the trivial factors: check if there are funds on the balance sheet, if the phone is full, and if the network is working at the operator. Statistics show that in 60% of cases the problem is solved at the initial diagnostic stage without using complex tools.
Checking the physical connection and SIM-map
The first step should always be to check the physical condition of the SIM card and slot. Even microscopic oxidation of contacts or improper installation of the card in the tray can lead to unstable reception of the signal and loss of incoming inputs. SMS-Remove the tray with a paper clip and carefully examine the chip for contamination.
Clean the SIM card contacts with a soft rinse or dry cloth without a pile. If you have a dual-SIM card device, try moving the card to another slot, which will help you understand whether the problem is in a particular card or in the Redmi or Poco smartphone connector.
It's also worth making sure that the SIM card isn't too old, and carriers are gradually moving to new encryption standards, and cards that are issued more quickly. 5-7 In the past, it may not work properly on modern networks. 4G/LTE. In this case, replacing the sim in the cabin of the operator will take a few minutes and solve the problem.
- 📱 Remove and re-insert the SIM card, making sure the fit fit is tight.
- 🧹 Wipe the SIM card contacts with dry soft cloth.
- 🔄 Change the SIM card if you have a two-sim smartphone.
- 📶 Check the signal level in the status bar, you may be in a low coverage area.
If the problem persists after manipulating the physical card, move to software settings. It is important to note that a frequent cause of failure is an incorrectly stored message center number (SMSC), which is responsible for routing incoming correspondence.
Message center and network settings
Message Center is the technical number in the SIM card memory that all SMS go through. If the phone settings indicate the wrong number or the field is empty, messages will not come. To check and change this setting, open the standard Messages application.
In the application settings menu, find the “Additional” or “Settings” section. SIM-It should have a message center, and it should have a number that matches your carrier, for example, for MTS it +79168920000 and for Beeline +79037000100 (numbers may change, it is better to clarify the current data on the operator's website).
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If the message center number does not match the operator’s data, manually correct it or click the “Restore by default” button if such an option is available in your version of MIUI.
In addition to the messaging center, you should pay attention to the mode of operation of the network: sometimes the smartphone sticks in 3G or 2G mode, where the delivery of messages can be unstable. Forced to switch the network mode in the settings.
To do this, go to the Settings. → SIM-maps and mobile networks → Network selection: Make sure you have an automatic choice or force the choice Preferred LTE. After the change of mode, the network will reconnect and messages may begin to arrive.
⚠️ Note: When resetting network settings or changing settings APN You can delete the saved access points for mobile Internet. APN your operator to quickly restore access to the network.
Cleaning the cache and application data Messages
Accumulated debris in the application cache or a software failure can block the work of the message delivery service. In the shell of MIUI, energy saving is aggressive, which can kill the processes responsible for receiving SMS. Start with cleaning the cache.
Go to Settings → Apps → All apps. Find Messages (or Mi Messages) in the list. Click on Storage and select Clear Cache. This is secure and won't delete your correspondence.
If the cache cleanup didn't work, reset the application. SMS-correspondence, so if you have important codes or messages, it is best to back up first or move them to the cloud.
- 🗑️ Press "Clear» → «Clean Everything" in the app store menu.
- 🚫 Turn off the Traffic Saving option for the Messages app.
- 🔋 In the Battery menu, select No Limits mode to work in the background.
- 📲 Make sure the app is given all the necessary permissions, including access to contacts and phone.