Xiaomi WiFi Calling Not Working on KPN Netherlands

Xiaomi Wi-Fi Calling Not Working on KPN Netherlands – Fix

If your Xiaomi, Redmi, or POCO device cannot use Wi-Fi Calling on KPN's network in the Netherlands, this guide explains why and how to fix it.

Quick Answer:
Wi-Fi Calling issues on KPN with Xiaomi devices are commonly caused by missing or hidden settings, carrier compatibility problems, or roaming restrictions. First, check whether the Wi-Fi Calling option is available under Settings → SIM cards & mobile networks. If it's missing, try entering *#*#869434#*#* in the dialer, which may enable the carrier check on some Xiaomi devices. If the option is available but doesn't work, ensure you're connected to a stable Wi-Fi network and that you're not roaming on a foreign network.

How to Tell if Wi-Fi Calling Is Active on Xiaomi

If Wi-Fi Calling is working, you should see one of these indicators:

  • A Wi-Fi Calling or VoWiFi icon in the status bar (varies by Xiaomi model).
  • The phone can make and receive calls when Airplane mode is enabled and Wi-Fi is on.
  • A notification may appear when a call is placed using Wi-Fi.

If you don't see any of these, Wi-Fi Calling is not currently active.

Quick Symptom Check

Symptom Most Likely Fix
Wi-Fi Calling option missing entirely Use carrier code: *#*#869434#*#*
Wi-Fi Calling option visible but doesn't work Check Wi-Fi network, restart phone, check roaming status
Wi-Fi Calling worked before, stopped after update HyperOS update issue, try resetting network settings
Caller ID shows "unknown" on Wi-Fi Calling calls Xiaomi compatibility issue with KPN
Wi-Fi Calling only works in Airplane mode Phone prefers mobile network, check IMS registration

Why This Happens

Several factors can prevent Wi-Fi Calling from working on KPN with Xiaomi devices:

  • Missing or hidden Wi-Fi Calling settings – Xiaomi devices sometimes hide the Wi-Fi Calling option on certain carriers unless manually enabled.
  • Carrier compatibility issues – KPN has had known compatibility issues with Xiaomi VoLTE and Wi-Fi Calling for several years, affecting models like Poco X3, Mi 9T Pro, Mi 10 Pro, and 11T Pro.
  • Roaming restrictions – Wi-Fi Calling does not work when your phone is connected to a foreign (non-Dutch) mobile network, even if you're near the border. Some users have reported that Wi-Fi Calling may not work correctly when connected through foreign internet providers. Using a stable internet connection in the Netherlands generally provides the best compatibility.
  • HyperOS update bugs – Some users have reported Wi-Fi Calling stopping after HyperOS updates.

Check Whether Your Xiaomi Model Supports Wi-Fi Calling on KPN

KPN supports Wi-Fi Calling on many devices, but availability can vary by model and software version.

  • Some Xiaomi models may not be officially certified for Wi-Fi Calling on KPN.
  • Older Xiaomi models may not support Wi-Fi Calling at all.
  • Devices running the Global or EEA software are generally more likely to support European carrier features than devices running the China ROM.
  • If your model isn't officially supported, the carrier code may still enable the option on some devices.

Check IMS Registration

IMS registration is required for Wi-Fi Calling to work. If IMS shows "Not Registered," the feature will fail.

  1. Open the Phone dialer and enter *#*#4636#*#* (if supported on your Xiaomi model).
  2. Tap Phone information.
  3. Look for IMS Service Status or IMS Registration.
  4. It should show Registered. If it shows "Not Registered," Wi-Fi Calling may not work until IMS services are successfully registered with the carrier.

Note: This code may not work on all Xiaomi models or HyperOS versions.

Check Your Wi-Fi Network

Before troubleshooting your phone, ensure your Wi-Fi network is working properly:

  • Connect to a stable Wi-Fi network – Wi-Fi Calling requires a reliable internet connection.
  • Check your internet provider – Some users have reported that Wi-Fi Calling may not work correctly when connected through foreign internet providers. Using a stable internet connection in the Netherlands generally provides the best compatibility.

Enable Wi-Fi Calling on Xiaomi – Method 1 (Settings)

Try these paths to find the Wi-Fi Calling setting:

  1. Settings → SIM cards & mobile networks → [KPN] SIM.
  2. Look for Make calls using Wi-Fi or Wi-Fi Calling.
  3. Toggle the setting ON.

Note: You must be connected to a working Wi-Fi network to access this option.

Enable Wi-Fi Calling on Xiaomi – Method 2 (Carrier Code)

If the Wi-Fi Calling option is missing from your settings, some Xiaomi devices may respond to the carrier check code:

  1. Open the Phone dialer.
  2. Enter *#*#869434#*#*.
  3. A message will appear: "VoWiFi carrier was disabled" or similar.
  4. Repeat the code to toggle the setting.
  5. Restart your phone.
  6. Check if the Wi-Fi Calling option appears in Settings.

What this code does: It toggles Xiaomi's carrier compatibility check for Wi-Fi Calling. This workaround has been reported to help on some Xiaomi devices. Users on both KPN and Odido have reported that this enabled the missing Wi-Fi Calling option.

Note: This code may not work on all Xiaomi models or HyperOS versions.

Check Your Network Type – Not Roaming

Wi-Fi Calling does NOT work when your phone is connected to a foreign network.

Check your network:

  1. Settings → SIM cards & mobile networks → [KPN] SIM.
  2. Tap Network operators or Mobile networks.
  3. Ensure Select automatically is enabled or manually select KPN.
  4. If you're near the border and your phone keeps connecting to a foreign network, Wi-Fi Calling may not work. You may need to manually select KPN or turn off roaming temporarily.

Test Wi-Fi Calling in Airplane Mode

A quick way to test if Wi-Fi Calling is working:

  1. Enable Airplane mode.
  2. Turn Wi-Fi back on.
  3. Check if Wi-Fi Calling is active and you can make calls.

Xiaomi confirms that Wi-Fi Calling works in Airplane mode when a supported SIM is installed. If it works in Airplane mode but not normally, your phone may be preferring the mobile network over Wi-Fi for calls.

Check Preferred Network Type for Calls

Some Xiaomi devices allow you to set a preference for Wi-Fi Calling:

  1. Settings → SIM cards & mobile networks → [KPN] SIM.
  2. Look for Calling preference or Wi-Fi calling preference.
  3. Select Prefer Wi-Fi or Wi-Fi preferred.

If this option isn't available, your device may not fully support carrier-specific preferences on KPN.

Known Xiaomi + KPN Wi-Fi Calling Issues

KPN has had known compatibility issues with Xiaomi VoLTE and Wi-Fi Calling for several years, affecting multiple models. Key issues reported:

  • Missing Wi-Fi Calling settings – The option is not visible by default.
  • Caller ID showing "unknown" – Some Xiaomi users on KPN have reported caller ID issues during Wi-Fi Calling. When enabled, caller names don't display correctly for some users.
  • Wi-Fi Calling stops working after updates – Some users reported that the feature stopped working after a HyperOS update.

Why Is Wi-Fi Calling Turning Itself Off on Xiaomi?

If Wi-Fi Calling keeps turning off automatically, this may be caused by:

  • Unstable Wi-Fi connection – The phone may disable Wi-Fi Calling if the Wi-Fi network is unreliable.
  • IMS registration failure – If IMS registration drops, the feature may disable itself.
  • Carrier compatibility issues – KPN's network may not always recognise the Xiaomi device.

In some cases, aggressive battery-saving features may interfere with background network services, although this is less common than carrier or software-related issues.

Try: Restarting your phone, checking IMS registration, or disabling battery optimization for network-related system apps.

If the Problem Started After a HyperOS Update

Some KPN users have reported that Wi-Fi Calling stopped working after a HyperOS update. What to do:

  • Restart your phone – A simple reboot may restore the connection.
  • Re-enter the carrier code – Try *#*#869434#*#* again.
  • Reset network settings – This can restore carrier-specific configuration.
  • Contact KPN – KPN can check whether Wi-Fi Calling is enabled for your account and investigate the issue.

Reset Network Settings (Last Resort)

If nothing else works, reset network settings. This removes saved Wi-Fi passwords and Bluetooth pairings, and resets all mobile network settings.

  1. Settings → Additional settings → Backup & reset → Reset phone → Reset network settings.
  2. Confirm the reset.
  3. Restart your phone.
  4. Note: You'll need to reconnect to Wi-Fi networks afterwards.

Contact KPN

Contact KPN if:

  • Wi-Fi Calling still doesn't work after completing all steps above.
  • You have the "unknown caller" issue and want to report it.
  • You're near the border and Wi-Fi Calling isn't working when connected to KPN's network.

What to ask KPN: Ask KPN to verify that Wi-Fi Calling is enabled for your SIM and that there are no account or provisioning issues. KPN support can also file a complaint with their technical department for further investigation.

How to contact KPN:

  • Call KPN customer service
  • Visit a KPN store
  • Use the MijnKPN app
  • Contact KPN via Facebook or X (if you can't call)
  • Check the KPN Community forums for similar issues

Final Verdict

In most cases, Wi-Fi Calling problems on KPN are caused by missing settings, device compatibility, or carrier provisioning rather than a hardware fault. Start by checking that Wi-Fi Calling is available for your device and SIM, then work through the software fixes. If the feature still doesn't work, contact KPN to verify your account configuration.

Frequently Asked Questions

Why is Wi-Fi Calling missing on my Xiaomi with KPN?
Xiaomi devices sometimes hide the Wi-Fi Calling option on certain carriers. On some Xiaomi devices, entering *#*#869434#*#* in the dialer toggles the carrier compatibility check and may enable the missing options.

Why is Wi-Fi Calling greyed out on Xiaomi?
The option may be greyed out if you're not connected to a Wi-Fi network, if your SIM doesn't support Wi-Fi Calling, or if your Xiaomi model is not fully compatible with KPN's implementation.

Does Wi-Fi Calling work when roaming on KPN?
No. Wi-Fi Calling does not work when your phone is connected to a foreign (non-Dutch) mobile network. You need to be connected to KPN's network in the Netherlands for the feature to function.

Can I use Wi-Fi Calling abroad with KPN?
Some users have reported that Wi-Fi Calling works more reliably when connected through internet providers in the Netherlands rather than foreign networks. When travelling abroad, availability may depend on KPN's roaming policies and the internet connection being used.

Why does my caller ID show "unknown" on Wi-Fi Calling calls?
Some Xiaomi users on KPN have reported caller ID issues during Wi-Fi Calling. This appears to be a compatibility issue with certain Xiaomi models rather than a problem with your device settings.

Does Wi-Fi Calling work in Airplane mode on Xiaomi?
Yes. Xiaomi confirms that Wi-Fi Calling works in Airplane mode when a supported SIM card is installed and Wi-Fi is turned on.

Why did Wi-Fi Calling stop working after a HyperOS update?
Some KPN users have reported that Wi-Fi Calling stopped working after a HyperOS update. Try restarting your phone, re-entering the carrier code, or resetting network settings. If the issue persists, contact KPN.

Does KPN support Wi-Fi Calling on all Xiaomi phones?
KPN supports Wi-Fi Calling on many devices, but not all Xiaomi models are officially certified. Availability depends on the device model, software version, and carrier provisioning.

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