Xiaomi suddenly stopped seeing SIM-The phone doesn't catch the network, it displays "No Services" or "No" SIMΒ»? The problem is similar to the new models (Redmi Note 13 Pro).+, POCO F6), And so on the old ones (Redmi) 4X, Mi A1). The reasons can range from a simple software failure to a physical malfunction of a slot or communication module, and in this article we will discuss all possible solutions, from simple to complex, so that you can restore communication without going to the service center.
First, determine what type of problem you have: the phone canβt see at all. SIM (There's no network icon in the status bar, or the network appears but disappears periodically, and in the first case, it's more hardware failure, in the second case, software failure, or operator problems, and we'll look at both scenarios, and we'll also give you a checklist for diagnostics.
If you've dropped your phone recently, urinated it, or disassembled it yourself, you can immediately move on to the hardware malfunction section. Otherwise, start with the software.
Basic checks: SIM-slot
Before digging deeper, make sure the problem isnβt in the first place. SIM-These steps take 2 minutes, but exclude 30 percent of the possible causes.
- π Reboot your phone. Sometimes it crashes. IMEI or the communication module is eliminated by a simple reboot. Press the power button and select "RebootΒ».
- π± Check it out. SIM-If it does not work there, the operator has a problem or the card itself is damaged (contact the salon for a replacement).
- π Check the slot. Use a flashlight: is there any dust or dirt or bent contacts inside? Gently blow the slot or clean it with a soft brush.
- π§ Reinstall. SIM-Remove the tray, check if the card is correct (chip down, beveled corner matches), and insert back before clicking.
If you're using a dual-SIM model (like the Redmi Note 12 Pro), try inserting the card into another slot. Sometimes one of the modules fails and the other one works fine. 4GΒ» For the second slot, this can block the first slot. SIM.
β οΈ Note: Do not use metal objects (needles, paper clips) to retrieve the tray if you have a push-push mechanism (like in Mi 11).This can damage the latch. Use only the original key or plastic blade.
2. Network settings: what to check in the phone menu
If SIM-The card is good, but Xiaomi can't see it, and the problem may be in the network settings. β SIM-Maps and mobile networks and follow the following steps:
- πΆ Enable automatic network selection. Go to the Mobile Network β Select the network and activate the option "Automatically". If the phone does not find the network, try to select the operator manually.
- π Reset the network settings. β System system β Resetting settings β Resetting Wi-Fi, mobile network and Bluetooth settings will remove saved networks and passwords, but often solves the problem with the Internet. SIM.
- π± Check the network mode. β Choose the preferred network type 4G/3G/2G (If only the car was worth it. 4G, The phone may not catch the network in areas with poor coverage.
- π§ Disable VoLTE and VoWiFi. These features sometimes conflict with the SIM-You can find some of the operators' maps. SIM-map β Additionally.
In the models with MIUI 14+ (for example, Xiaomi 13T) The path to network settings may be different. If you don't find the right item, search in the settings (the magnifying glass icon at the top).
βοΈ Diagnostics of network settings
If after resetting the phone still does not see SIM, Try to turn on flight mode for 30 seconds, then turn it off.
3. Software failures: reset, firmware, IMEI
If the hardware checks didn't work, the problem could be firmware or system files.
- π± Failure IMEI (For example, after a failed update or reset).
- π Firmware conflict (especially on customized ones) ROM).
- π Error in the modem (module rild or telephony).
Start with a soft reset:
- Go to Settings β About the phone β Reset settings.
- Select βResetβ (does not delete files, only settings).
- After restart, check it out. SIM.
If it doesnβt help, try to restore it. IMEI (It is important for phones after firmware or reset):
- Please enter the phone keyboard *#06# if IMEI is absent or displayed as NULL, It needs to be rebuilt.
- For models on Qualcomm (most Xiaomi) use the instructions from XDA recreating QCN-file.
- For Mediatek (e.g. Redmi) 9A) Maui will need to be needed META or SN Writer Tool.
β οΈ Attention: Recovery IMEI On phones with a locked bootloader (bootloader) can lead to a blink (complete failure.
If IMEI OK, but the network is not catching, try updating the firmware:
- π² Go to Settings. β The phone. β Updating the system.
- π If the update is available, install it.
- π§ If your phone doesnβt see an update, download the latest version. MIUI for your model from the official website and through Recovery.
How to Switch Xiaomi through Recovery?
Hardware malfunctions: slot, antenna, module
If the software methods didn't work, the problem is probably hardware.
| Malfunction | Signs. | Decision |
|---|---|---|
| The slot is damaged. SIM-map | The phone doesn't see any of them. SIM, contact | Slot replacement (cost) ~1500β3000 β½) |
| The heap of the antenna plume | The network only appears in a certain position of the phone. | Coiling or replacement |
| Communication module (modem) is defective | IMEI There is, but the network does not catch, Wi-Fi and Bluetooth work | Replacement of the module or flashing modem |
| Moisture on the board | Corrosion on contacts, phone overheating | Cleaning with ultrasound + replacing damaged elements |
It is difficult to diagnose a hardware problem on your own, but you can check:
- π Visual inspection: Remove the tray SIM And you put a flashlight in the slot, and if you see oxidation or bent contacts, that's a clear sign of a breakdown.
- π± Testing with another SIM-Card: If none of the cards work, the problem is the phone.
- π§ Antenna check: Hand your phone in the upper antenna area (near the camera) if the network appears, the problem is in the plume or antenna contacts.
If your phone falls or urinates, donβt try drying it with a hair dryer or rice, which will aggravate corrosion, and take it to a service where the board will be cleaned professionally.
π‘
Before visiting the service take a photo IMEI phone (sticker under the battery or in the settings) This will help to avoid the substitution of the fee for the original.
5. Problems with the operator: blocking, covering, technical work
Sometimes the problem isn't with the phone, it's with the mobile phone.
- π« Lockdown SIM-Cards for non-payment or on request (for example, if lost).
- π‘ Technical work on the basis of the operator (check the status on the website of MTS, Beeline, etc.).
- π Lack of coverage (e.g, Tele2 They may not be able to catch in some areas).
- π Failure in HLR/HLR (operator database).
To check:
- Call your number from another phone if you hear, "Subscriber temporarily unavailableΒ» β SIM blocked.
- Put it in. SIM If there's no network, there's a problem with the operator.
- Check the balance: sometimes with a zero score, operators restrict access to the network (even if you have unlimited).
If you suspect a block, contact the operator:
- π MTS: 0890 or +7 495 766-01-66
- π Beeline: 0611 or +7 800 700-06-11
- π MegaFon: 0500 or +7 800 550-05-00
- π Tele2: 611 or +7 800 555-06-11
β οΈ Note: If you have recently changed rates or activated a new service, some carriers (such as Tinkoff Mobile) require a phone restart to apply the changes.
6. Features of specific Xiaomi models
Some Xiaomi models have unique problems with the SIM-Let's look at the most common ones:
- π± Redmi Note 8/8T, Note 9/9T: A common problem is that the antenna plume collapses after a fall, and the only way to get the network is to hold the phone at a certain angle.
- π± POCO X3/X3 Pro: Conflict with firmware on the base MIUI 12.5 β After the update, it may disappear. IMEI. Solution: rollback MIUI 12 manually IMEI.
For dual-SIM models (e.g. Redmi Note 12 Pro)+) Check if the Dual function is activated. 4G Sometimes she's in conflict with one of the things she's doing. SIM-map.
If you have Xiaomi on a Mediatek processor (Redmi 9, POCO M3), Try the engineering menu (#4636##) to select WCDMA preferred LTE It sometimes solves the problem of a lost network.
π‘
In the models with NFC (For example, Xiaomi 13) SIM-The card and contactless payment module may conflict. NFC customized.
7. When to contact the service center
If youβve tried all the methods, Xiaomi still doesnβt see SIM-It's time to call the experts, and here are the signs that self-repair is not possible:
- π§ The phone doesn't see any of them. SIM-card.
- π± IMEI missing or displayed as NULL afterward.
- π¦ The board shows signs of corrosion or physical damage.
- π‘ Antenna plume torn or bent.
- π The phone stopped seeing SIM after falling, hitting or getting moisture.
Cost of repairs in service centers:
- π§ Replacement SIM-slot: 1500β3000 β½.
- π‘ Repair of antenna plume: 2000β4000 β½.
- π± Replacement of the communication module: 3000-6000 β½.
- π¦ Cleaning board after moisture: 2500β5000 β½.
Xiaomi's official service centers can be found on mi.com.
- Make a backup copy of the data (if the phone is still turned on).
- Write it down. IMEI (box-boxed).
- Check if the warranty is maintained after repair.
β οΈ Warning: Unofficial services may be used to install unoriginal parts, which will lead to repeated failures, such as cheap Chinese parts. SIM-Slots often break down after 2-3 months.