The problem with incoming calls on Xiaomi: where to start the diagnosis
You have noticed that your Xiaomi Redmi, POCO Or Mi stopped receiving incoming calls, though SIM-The problem is common in both newer models (Xiaomi 14, Redmi Note 13 Pro) and 2020-2022 devices (POCO X3 Pro, Mi 11 Lite: The reasons may be software failures, network settings or even hardware malfunctions of the antenna module.
The first thing to do is check the basic parameters:
- πΆ Network signal level (whether there is an "no network" or "only emergency calls" icon").
- π Call forwarding mode (possibly calls go to another number).
- π οΈ System updates (outdated software often conflicts with operators).
If everything is fine, but the calls still don't come, read on. We've compiled 10 proven ways to solve the problem, from the simplest to the most technically challenging.
Important: before you start diagnosing, restart your phone, which eliminates up to 30% of the temporary failures, and if you have a problem after the reboot, move to the next section.
1. Check the "Do Not Disturb" mode and block calls
A common reason for missed calls is activated Do Not Disturb (DND) mode or accidentally added numbers to a blacklist, which on Xiaomi may not work in an obvious way, especially if you use a proprietary MIUI or HyperOS shell.
How to check:
- π Open the Settings. β Sound and vibration β Don't disturb.
- π΅ Make sure the mode is turned off or set to skip calls from all contacts.
- π« Check the blacklist: Phone β β¦ (menu) β Number locking.
Attention.
MIUI 14+
Xiaomi
If you use third-party spam-blocking apps (like Truecaller or GetContact), temporarily disable them.These programs sometimes mistakenly filter legitimate calls.
π‘
On some POCO models, the Do Not Disturb mode is activated by a long press on the power button. Check this in the button settings.
2. Reset network settings and manual operator selection
Failures in operation SIM-maps are often associated with incorrect network settings, such as after an update MIUI The phone may "forget" the settings. APN Or you lose your connection to the operator's base station, and then you can reset the network.
Instructions:
- Open the Settings. β SIM-maps and mobile networks.
- Choose yours. SIM-map β Resetting network settings.
- Confirm the action (entry will be required) PIN-code).
- Reboot the phone.
After the reset, check if the network signal has appeared. If not, try to select the operator manually:
Settings β SIM-map β Choice of network β Manual scanning. Select your operator (e.g. MTS, Beeline) from the list. If no networks are found, the problem may be on the side. SIM-map or antenna module.
Signal level verification|Resetting network settings|Manual selection of operator|Test SIM-card on another phone-->
3. Update and firmware modem part
Outdated software is one of the main reasons for communication problems at Xiaomi, and the manufacturer regularly releases patches to fix modem bugs, especially after major Android updates (such as when it transitions to Android 14 in 2023-2026).
How to update software:
- π± Go to Settings. β The phone. β Updating the system.
- π Click "Check Updates" and install the latest version. MIUI/HyperOS.
- π‘ If there are no updates, but the problem remains, try flashing the modem separately through Fastboot (instruction below).
Xiaomi 12T
Redmi Note 11
For advanced users, if the standard update didnβt work, you can manually flash the modem through Fastboot.
- Download the firmware for your model from the Xiaomi Firmware Updater website.
- Unpack the archive and find the modem.img file.
- Connect your phone to your PC in Fastboot mode (clip Volume Down + Power).
- Command: Fastboot Flash Modem modem.img fastboot reboot
What if after the modem firmware the phone does not catch the network?
4.Verification SIM-Cards and slots: mechanical damage
If software methods fail, the problem may lie in physical damage. SIM-This is especially true for phones that have often dropped or operated in high humidity conditions (e.g., high humidity, POCO X3 Pro with leakproof body).
Diagnosis:
- π Replace it. SIM-card in another slot (if the phone supports 2) SIM).
- π± Check the card on another phone - if there is no network there, replace it. SIM operator.
- π Inspect the slot for oxidation or bent contacts (use a flashlight).
Xiaomi with hybrid slots (for example, Redmi Note 9 Pro) often breaks the fixing mechanism. SIM-cards β if the card is not fixed tightly, the connection will disappear.
Attention: if you find contact oxidation, do not use alcohol or wet wipes - this can aggravate corrosion.
| Sign of malfunction | Probable cause | Decision |
|---|---|---|
| The "no network" symbol appears after the phone crashes | Damage to the antenna cable or connector | Replacement of cable/connector in the service |
| SIM-The card is not defined in any slot | SIM controller malfunction (NXP PN67T chip) | Diagnostics and replacement of motherboard |
| Calls are not coming, but SMS and the internet are working. | Failure in settings CS-call (VoLTE) | Resetting network settings or disabling VoLTE |
5. setting up VoLTE and CS-challenge
Modern Xiaomi (starting with the 2019 Redmi Note 8 Pro) supports VoLTE (voice over 4G), but this feature sometimes conflicts with carrier networks, especially if you use virtual providers (e.g., Yota, Tele2 based on Rostelecom).
How to set up VoLTE:
- πΆ Go to Settings. β SIM-maps and mobile networks β [Yours. SIM] β Voice calls.
- π Select Only. 4G (VoLTE or Auto (if the first option does not work).
- π If VoLTE is disabled by the operator, turn on CS-Calls (voice communication through the 2G/3G).
On some models (such as the Xiaomi 13T), VoLTE may turn off after the upgrade β check the settings again.
If the VoLTE does not work, but the operator supports it:
- Make sure you have the latest version of MIUI installed.
- Check whether the VoLTE service is active in the operatorβs personal account.
- Do the reset. APN: Settings β SIM-map β Access points (APN) β Reset to factory.
π‘
If after turning on VoLTE calls stopped coming, try to disable this function and use it. CS-challenge (2G/3G).
Hardware malfunctions: antenna, modem, motherboard
If none of the software methods worked, the problem is probably hardware.
- π‘ Antenna cable (especially after falling or disassembling the phone).
- π οΈ Modem chip (e.g. Qualcomm) X55 on Mi 10 or Mediatek Helio G96 on the Redmi Note 11S).
- π Connector. SIM-cards (oxidation or mechanical wear).
Symptoms of hardware problems:
- The phone does not catch the net even after the reset.
- The signal disappears when the phone is tilted (an antenna cable problem).
- SIM-The card is not defined in any slot.
Diagnosis in the service usually includes:
- Check the power chains of the modem with a multimeter.
- Testing the antenna using special equipment (e.g. Rohde & Schwarz).
- Re-flashing the modem part through EDL-The system (unless the chip is dead").
Cost of repair
- Redmi Note 10 Pro: Replacement of antenna cable β ~1 500 β½.
- Xiaomi 12 Pro: Replacement of the modem chip β ~5 000β8 000 β½.
- POCO F3: plug-break SIM β ~2 000 β½.
π‘
If the phone falls into water, do not dry it with a hair dryer or on a battery - this will accelerate the corrosion of contacts.