Message “Number” SIM-Maps not configured** on Xiaomi smartphones (including Redmi, POCO and Mi) appears unexpectedly and blocks the ability to call, send SMS or use the mobile Internet, the error is not tied to a particular model or version. MIUI — It can be used as a budget Redmi. 12C, In most cases, the problem is solved without contacting the service center, but it is important to correctly diagnose the cause.
In this article, we will understand 7 proven ways to eliminate errors - from basic (reboot, check) SIM-maps) to advanced (recovery) IMEI, manual APN). We also know why a smartphone can lose communication with the operator’s network, even if it is not a smartphone. SIM-The card is good, and what to do if none of the methods worked. MIUI 14/15 and tested on current Xiaomi models.
Why does the error "number" occur SIM-card untuned»?
Report of unconfigured number SIM-The card is a general signal of a problem with the identification of the device in the operator's network:
- 📶 Software failures: firmware errors, network reset, conflict with updates MIUI.
The error most often occurs after:
- 🔄 Updates MIUI (particularly by air» — OTA).
- 📴 Resetting the phone to factory settings.
- 🔌 Removal/replacement SIM-card-cart.
- 🌍 Moving to another region (roaming).
Critical: If the error occurred after unlocking the bootloader or installing custom firmware, there is a high risk of losing the IMEI, the unique identifier of the device, in which case special measures will be required (see section on IMEI).
Method 1: Basic inspections — SIM-slot
Start with the basics. In 30 percent of cases, the error disappears after a physical checkup:
- Remove and re-insert. SIM-Map: Turn off your phone. Use a paper clip to extract the tray (on Xiaomi it's usually on the left side). SIM-card for scratches, chips or oxidation of contacts (golden area). Wipe the contacts of the card and slot with a soft cloth without pile (you can moisten with alcohol).
- Check Compatibility: Xiaomi supports nano-SIM (3FF). If you're using a micro-SIM or mini-SIM adapter, replace it. SIM-The card is activated by the operator (especially if it is new).
Try another one. SIM-map:
- Insert a working SIM from another operator, and if the error disappears, the problem is in the original card.
- If the error persists, the slot or software part of the phone is faulty.
- Reset network settings: Go to Settings → SIM-Maps and mobile networks. Choose problem networks. SIM-map → Network settings. Tap Network reset (may require input) PIN-After resetting, the phone will automatically reconnect to the network (may take up to 2 minutes).
| Operator. | APN name | APN | Type of authentication |
|---|---|---|---|
| MTS | mts | internet.mts.ru | PAP or CHAP |
| Beeline | beeline | internet.beeline.ru | PAP |
| MegaFon | megafon | internet | No. |
| Tele2. | tele2 | internet.tele2.ru | PAP |
Additional options (if the Internet is not working):
- Proxy and port: Do not specify (leave empty).
- APN protocol: IPv4/IPv6.
- Type APN: default,supl (for MMS add,mms).
If the APN disappeared from the list after saving, try disabling mobile data, saving the settings again, and then enabling data transfer.
💡
Before setting up an APN, check if an antivirus (such as Mi Security) is blocking access to the network.
Method 4: Restore the IMEI (if it resets)
If the phone stops to identify both SIM-cards at the same time, and in the settings instead IMEI If you show zeros or you say "Unknown," you erase the device ID:
Warning: Reset will delete all data, including photos, contacts and installed apps. SIM-Even after the card is reset, the problem is most likely hardware.
💡
If the error occurred after the “over the air” (OTA) update, try rolling back to the previous version of MIUI via Fastboot.Instructions for a specific model, look for the 4PDA or XDA Developers forum.
Method 6: Checking the communication module and antenna
If all software methods are exhausted, but the error persists, there may be a hardware malfunction.
- 📡 Antenna module: on Xiaomi, it is located under the back cover, next to the camera.
How to diagnose:
- Call your phone from another device, and if it's calling, but it can't make an outgoing call, the problem is, SIM-map.
- Check the signal level in Engineer Mode (#4636## → Phone information). If Signal Strength shows 0 dBm or Unknown, the communication module is faulty.
If you suspect a hardware breakdown, contact a service center. Self-repair (for example, soldering of an antenna) can lead to loss of warranty.
Method 7: Contacting the operator or service
If neither of these methods worked, there are two options:
- Contact the operator: Visit the salon with a passport and SIM-Ask to check the status of the card (is it blocked) and check if a replacement is required. SIM New (for example, if the old one was released before 2015).
Put the phone on the service:
- Xiaomi has official service centers in most major cities, and you can find the addresses on mi.com.
- If the warranty is over, contact a trusted private service with good reviews.
If the second SIM works and the first does not, it is likely that the problem is in the card or its settings (APN).