Why Xiaomi Phone Resets Incoming Calls – A Complete Discussion of Causes and Solutions

You're waiting for an important call, but the caller resets it in seconds -- or does Xiaomi's smartphone break the connection immediately after it's taken? Incoming call interruption is a problem for Redmi, POCO and Mi device owners, regardless of the model. In 80 percent of cases, it's not hardware failures, but software failures or incorrect settings. But how do you pinpoint the cause and fix it without going to the service?

In this article, we’ll look at all the possible reasons Xiaomi might be able to reset incoming calls, from the banal lack of a network to hidden bugs in the communication module. You’ll learn how to check the SIM- card, configure network settings, update firmware, and even restore the phone if the problem is in hardware. And at the end of the article, the FAQ answers to users’ most frequent questions.

1 Problems with SIM- Card: Physical Damage and Activation Errors

The first thing to rule out is a malfunction of the SIM- card. Even microscopic scratches on the contacts or improper cropping of the nano-SIM can cause calls to break down after 1–5 seconds after acceptance. Especially often this happens on Xiaomi Redmi Note 10/11 and POCO X3/X4 models, where the slot for the SIM- card is combined with a microSD tray.

How to check:

• 🔍 Examine the SIM- map for cracks, chips, or scuffs. Use a magnifying glass or flashlight.
• 📱 Try the card on another phone - if calls are being reset there too, the problem is in SIM, not Xiaomi.
• 🔄 Reboot your phone after retrieving/installing SIM. Sometimes the communication module doesn't see the card without the reboot.
• 📶 Check signal strength in Settings → SIM- maps and mobile networks. If the indicator shows 0-1 division, the communication will be unstable.

⚠️ Warning: If the SIM- card was cut off on its own (e.g., from mini-SIM to nano-SIM), the contacts could be damaged. In this case, replace the card in the operator's cabin - it's free.

Another common reason is the non-activated SIM. For example, if you recently changed the tariff or operator, but did not confirm activation through the USSD- command (for example, *111# for MTS).

2. failures in network settings: incorrect mode or operator

Xiaomi smartphones sometimes “lose” the mobile network settings after updating the firmware or resetting to factory parameters. If the Settings → SIM- cards and mobile networks indicate the wrong network mode (for example, only 4G with weak coverage), the phone can receive calls, but immediately cut them off.

How to set up:

1. Open Settings → SIM- Cards and Mobile Networks → [select SIM] → Network Type].
2. Set Auto (recommended) or manually select LTE/3G/2G (auto).
3. Activate the option “VoLTE” if available (improving the quality of communication in 4G networks).
4. Reboot the phone.

If the problem persists, try manually selecting the operator:

• 📡 Go to Settings → SIM-maps and mobile networks → [select SIM] → Network operators.
• 🔄 Turn off Automatic Selection and select your operator manually.
• 📵 If the phone doesn't find the network, try turning off SIM for 30 seconds, then turn it back on.

⚠️ Warning: On some Xiaomi models (e.g. Redmi 9A or POCO M3), the VoLTE option is hidden. To activate it, type ##86583## (for MIUI 12+) into the dialer or update the firmware.

3. Firmware conflicts: MIUI bugs and solutions

Mistakes in MIUI firmware are one of the most common causes of incoming calls to stop, especially for devices on MIUI 12.5-14, where bugs with the communication module occur after updates. For example, in Redmi Note 10 Pro, after upgrading to MIUI 13.0.4, many users have experienced the phone accepting the call, but after 2-3 seconds resets it.

How to fix it:

• 🔄 Update your firmware to the latest stable version: Settings → The phone. → Updating the system.
• 📥 If the update doesn't help, roll back to the previous version MIUI via Fastboot (instruction below).
• 🧹 Clear the cache of the communication module: Settings → Application Management → Application Management → Three dots (⋮) → Show system → Phone → Storage → Clear the cache.
• 🔧 Reset network settings: Settings → SIM-maps and mobile networks → Resetting network settings.

If the problem has occurred after the update, try to roll back to the previous version of MIUI:

1. Download the archive with firmware (for example, from https://xiaomifirmwareupdater.com).


2. Rename the file to update.zip and place it in the root of the phone's memory.




3. Go to Settings → About Phone → System Update → Three Dots (⋮) → Select a firmware file.




4. Confirm installation and wait for the reboot.

Hardware malfunctions: antenna, communication module, battery

If the software methods didn't work, the problem could be the hardware, and the most common ones are:

• 📡 Damaged antenna (for example, after falling or getting moisture).
• 🔌 Faulty communication module (chip responsible for mobile network).
• 🔋 A worn-out battery that does not provide stable power to the module.
• 🛠️ Poor contact SIM- tray (oxidation, pollution).

How to diagnose:

1. Check signal quality in Settings → About Phone → SIM- card status. If the signal level is constantly jumping (for example, from -90 dBm to -110 dBm), there may be problems with the antenna.
2. Test your phone in Safe Mode (press the power button → Safe Mode) If the calls are working properly, it's the software, not the hardware.
3. Check the battery through the AccuBattery app. If the wear is more than 30%, replace the battery.

Critical: If the phone only resets calls when connected to a charger, the problem is with the power controller or cable. Use the original Xiaomi power supply (for example, 18W or 33W) - cheap analogues can cause interference in the communication module.

⚠️ Warning: If the phone starts dropping calls after a fall or moisture, turn it off immediately and dry it in rice or silica gel for 24 to 48 hours. Turning on the device with moisture inside may short circuit!

5. Application conflicts: who is stopping calls?

Some applications (especially SEOs, antiviruses, or ad-blocking programs) can intercept incoming calls and interrupt them, such as Clean Master, DU Battery Saver, or AdGuard sometimes block system processes that are responsible for communication.

How to find the culprit:

• 🔍 Run your phone in safe mode (as described above). If the calls are working, it's third-party software.
• 📱 Check application permissions in Settings → Apps → Application Management → Rights → Phone. Revoke access from suspicious programs.
• 🚫 Temporarily remove optimizers and antiviruses, then check the calls.

List of applications that most often conflict with communication:

• 🛡️ Clean Master, CCleaner, AVG Cleaner – aggressively optimize background processes.
• 🔒 AdGuard, Blokada – can block system requests.
• 📞 Truecaller, GetContact — sometimes conflict with the Xiaomi call module.

Disable the optimizers (Clean Master, DU Speed Booster)

Remove Antiviruses (AVG, 360 Security)

Check AdGuard/Blokada settings

Revoke phone permissions from suspicious apps

Reboot the phone-->

6. Call settings: forwarding, locking, modes

Sometimes the phone drops calls because of incorrect call settings, such as activated redirects, Do Not Disturb mode, or accidentally added to a blacklist.

Call forwarding:

1. Open the phone app.
2. Press. ⋮ → Settings → Call forwarding.
3. Make sure all options ("Always", "If busy", "If no response", "If unavailable") are turned off.

Blacklist and lockdown:

• Go to Settings → Applications → Phone → Lock numbers.
• Check if the subscriber number has been added to the blacklist.
• Turn off the “Block Unknown Numbers” option if it is active.

Do Not Disturb (DND) mode:

• Open Settings → Sound and vibration → Do not disturb.
• Make sure that the mode is turned off or configured to skip calls only from selected contacts.
• Check your DND schedule – it’s possible that your phone will automatically block calls at a certain time.

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If calls are only being reset from specific subscribers, ask them to call from another number, and if the problem disappears, the subscriber’s operator is to blame (for example, the subscriber has activated the Anti-Aon service or the Blacklist service).

7.Problems with the operator: locks, technical work, tariff

Sometimes it's not the phone that's the fault, but the mobile operator, and here are the most common reasons on the part of the provider:

• 🔒 Blocking incoming calls (e.g. due to debt or suspicious activity)
• 🔧 Technical work at the station to which your phone is connected.
• 📡 Tariff incompatibility with VoLTE (for example, on some Tele2 or Iota tariffs this feature is disabled).
• 🔄 Error in subscriber profile (for example, after changing the tariff or porting the number).

How to check:

1. Call the operator’s short number (for example, 0611 for MTS, 0890 for Beeline) and specify the status of the services.
2. Send USSD- request to check balance and active services (e.g. *100# for MegaFon).
3. Try calling from another phone to your number – if the call is reset there, the operator definitely has the problem.

If the operator has confirmed the lock, request unlocking, which usually takes 10 minutes to 24 hours, and if the problem is technical work, you can only wait, and you can check the information about the completion of the repair on the operator's website or on its mobile application.

8.Extreme measures: resetting settings and contacting the service

If neither method has worked, there are two options:

1. Reset to factory settings (delete all data, but return the phone to its original state).
2. Contact the service center (if the problem is in the “iron”).

How to reset:

1. Create a backup of the data (Settings → About Phone → Backup).


2. Go to Settings → About Phone → Resetting → Reset Settings.




3. Select "Erase all data" and confirm.




4.After the reboot, set the phone up as new and check the calls.

If the reset didn’t work, it’s probably hardware. Contact an authorized Xiaomi service center (list on mi.com), the average cost of diagnosis is 500-1000 rubles. Repair of the communication module will cost 1500-4000 rubles depending on the model.

⚠️ Warning: Don't trust repairs to unofficial workshops if the problem is with a communications module or antenna. Improper repairs can completely disable the phone!

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Before resetting to factory settings, be sure to remove the SIM- card and memory card. In rare cases, the process can damage data on external media.

FAQ: Answers to Frequent Questions