Xiaomi WiFi Calling Not Working on Elisa Finland

Xiaomi WiFi Calling Not Working on Elisa Finland (2026 Fix)

📌 Quick Answer – If Your Xiaomi WiFi Calling Isn't Working on Elisa:

  • ✓ Ensure you are on a postpaid plan – Elisa Prepaid may not support WiFi Calling.
  • ✓ Confirm your plan and device support WiFi Calling on Elisa.
  • ✓ Try the Xiaomi diagnostic code: *#*#869434#*#* to toggle VoWiFi on supported devices.
  • ✓ Ensure you're connected to a stable Wi-Fi network.
  • ✓ Enable WiFi Calling in Settings: Settings → SIM cards & mobile networks → Your SIM → Wi-Fi calling.

If WiFi Calling still doesn't work, follow the step-by-step guide below.

If your Xiaomi, Redmi, or POCO phone won't make or receive calls over Wi-Fi, the WiFi Calling icon doesn't appear, or calls drop when switching to Wi-Fi on Elisa Finland, this guide covers common troubleshooting steps. This feature is also known as VoWiFi or WiFi-puhelut in Finnish.

Before You Start – Quick Checks

  • Check your plan – WiFi Calling is typically available on Elisa postpaid subscriptions. Elisa Prepaid plans may not support this feature.
  • Check VoLTE is enabled – Elisa WiFi Calling depends on 4G/5G calling (VoLTE) being active.
  • Ensure Wi-Fi is stable – WiFi Calling requires a stable internet connection. Some public hotspots or networks with captive portals may not work.

If these quick checks don't work, continue with the step-by-step guide below.

Quick Navigation

Diagnose the Issue First

Before making changes, determine the pattern of your WiFi Calling issue:

  • Is the option visible but not working? – The toggle is available, but calls still use the mobile network.
  • Is the option missing entirely? – The WiFi Calling setting does not appear in your SIM settings.
  • Does it work intermittently? – WiFi Calling works sometimes but disables itself after a few hours.
  • Do calls drop when switching between Wi-Fi and mobile? – If calls drop specifically when moving between Wi-Fi and mobile coverage, the problem may involve handover rather than basic WiFi Calling activation.
  • Is WiFi Calling enabled but the phone still uses the mobile network? – The toggle is on, but the indicator shows calls are still placed over the mobile network.

Why This Happens

  • Plan or carrier restrictions – WiFi Calling is available on Elisa subscriptions that support it. Prepaid plans may not include this feature.
  • VoLTE dependency – WiFi Calling and VoLTE both rely on IMS-based carrier services. If VoLTE or IMS provisioning is unavailable, WiFi Calling may also fail to register.
  • IMS registration failure – WiFi Calling depends on IMS registration. If IMS registration fails, WiFi Calling may not work even when the setting is enabled.
  • Device certification or carrier profile limitations – A Xiaomi phone may technically support VoWiFi, but the carrier may only enable the service for specific firmware profiles, regional variants, or tested device models.
  • Xiaomi carrier configuration – Some Xiaomi firmware versions or regional variants may restrict carrier-specific WiFi Calling features. Devices with China ROM may not show the option even if the hardware supports it.
  • Wi-Fi network restrictions – Some Wi-Fi networks block the traffic required for WiFi Calling.
  • Software or configuration issues – Incorrect network settings or outdated system software can prevent WiFi Calling from working.

Quick Diagnostic Table

  • WiFi Calling option missing → Plan support, SIM provisioning, ROM variant, or Xiaomi carrier configuration
  • Option visible but not working → IMS registration, VoLTE not enabled, Wi-Fi network, software, or carrier configuration
  • Works on other phones but not Xiaomi → Xiaomi-specific configuration, ROM, or carrier settings
  • Works intermittently → IMS registration, network handover, or Wi-Fi stability
  • Works on one Wi-Fi network but not another → Wi-Fi network restriction or configuration

Before Changing Settings: Confirm Elisa Eligibility

Before troubleshooting your device, verify that your Elisa plan and phone are compatible:

  • Check your subscription type – WiFi Calling (WiFi-puhelut) is available for customers with a compatible phone and subscription. It is typically available on postpaid subscriptions. Prepaid plans may not support the service.
  • Verify your Xiaomi model – Check Elisa's current device compatibility information or contact Elisa with your exact Xiaomi model and software version to confirm support.
  • VoLTE must be available – WiFi Calling is provisioned alongside IMS-based voice services. Ensure your plan and phone support 4G/5G calling (VoLTE).
  • Imported devices – Xiaomi phones from non-European markets may have different firmware or carrier profiles that can affect WiFi Calling availability on Elisa.

Important: Carrier Check

  • If WiFi Calling is not provisioned on your account or supported for your device, the feature may not work even if the option is visible on the phone.
  • Contact Elisa directly to confirm whether your specific subscription and device are supported.

Step 1: Test SIM in Another Phone

Why this matters: This is the quickest way to determine if the issue is your Xiaomi device or your SIM/plan.

  • Insert your Elisa SIM into another phone that supports WiFi Calling.
  • Check if WiFi Calling works on the other phone using the same Wi-Fi network.
  • If WiFi Calling works normally on the other phone, the issue is more likely related to your Xiaomi device or its configuration – continue with the steps below.
  • If WiFi Calling also doesn't work on the other phone using the same Wi-Fi network, test the SIM on a different Wi-Fi network to further isolate carrier vs. network issues.
  • If the issue persists, contact Elisa to check SIM/plan provisioning.

Step 2: Test Another Wi-Fi Network

Why this matters: WiFi Calling can be blocked by specific Wi-Fi networks. Testing on a different network helps isolate whether the issue is network-specific.

  • Connect to a different private Wi-Fi network (e.g., home or office).
  • Test WiFi Calling on the second network.
  • If it works, the original Wi-Fi network is the likely cause.
  • If it doesn't work on any network, continue with the steps below.

Step 3: Enable WiFi Calling in Settings

Why this matters: WiFi Calling must be explicitly enabled on your Xiaomi device.

  • Settings → SIM cards & mobile networks
  • Tap your Elisa SIM
  • Look for Wi-Fi calling, Make calls using Wi-Fi, WiFi-puhelut, or VoWiFi and toggle it ON

If the option is not visible:

  • If you cannot find the option, use Settings search and search for "Wi-Fi Calling", "VoWiFi", or the Finnish term "WiFi-puhelut". Menu locations vary between MIUI, HyperOS, and device models.

If WiFi Calling is enabled but still not working, move to Step 4.

Step 4: Check Xiaomi's VoWiFi Diagnostic Toggle

Why this matters: On some Xiaomi devices, a diagnostic code can change a device-side VoWiFi carrier-check setting. The exact effect depends on the model, ROM, and software version.

  1. Open the Phone app
  2. Dial *#*#869434#*#*
  3. On supported Xiaomi devices, this may toggle the VoWiFi feature.
  4. After dialing, check the WiFi Calling setting again in the SIM settings menu.
  5. Restart your phone and test if WiFi Calling works.

Note: This code may not work on all Xiaomi devices or ROM versions. If it doesn't work, proceed to Step 5.

If WiFi Calling still doesn't work, move to Step 5.

Step 5: Check IMS Registration Status (If Available)

Why this matters: WiFi Calling depends on IMS registration. If IMS registration fails, WiFi Calling may not work even when the setting is enabled. Some Xiaomi models expose additional IMS information through Android's testing menu, but the available options vary significantly by model and software version.

If your Xiaomi exposes the Android testing/IMS status menu, you can use it as a diagnostic check:

  1. Open the Phone app
  2. Dial *#*#4636#*#*
  3. Select Phone information
  4. Tap the three dots in the top right corner
  5. Select IMS Service Status (if available)
  6. Check if Voice over Wi-Fi shows as Available or Registered

If IMS shows "Not Registered":

  • Try toggling Airplane Mode on and off to re-register
  • Try toggling WiFi Calling off and on in Settings
  • If IMS registration is unavailable or fails consistently, carrier provisioning becomes one of the things to check.

Note: The exact menu and available IMS information vary by model and HyperOS/MIUI version. This menu is not available on every Xiaomi device.

If WiFi Calling still doesn't work, move to Step 6.

Step 6: Check VoLTE is Enabled

Why this matters: Elisa WiFi Calling is provisioned alongside IMS-based voice services. VoLTE and WiFi Calling are closely linked.

  • Settings → SIM cards & mobile networks
  • Tap your Elisa SIM
  • Look for VoLTE, 4G calling, or Use VoLTE and toggle it ON

If VoLTE is not visible or cannot be enabled:

  • This may indicate a plan or device compatibility issue
  • Contact Elisa to confirm your plan supports 4G/5G calling

If VoLTE is enabled but WiFi Calling still doesn't work, move to Step 7.

Step 7: Reset Network Settings

Why this matters: This resets Wi-Fi, mobile data, and Bluetooth settings without deleting personal data. It clears corrupted network configurations that may be preventing WiFi Calling.

  1. Settings → Connection & sharing (HyperOS) or Settings → Additional settings → Backup & reset (MIUI)
  2. Select Reset Wi-Fi, mobile & Bluetooth or Reset network settings
  3. Confirm the reset
  4. Restart your phone
  5. Re-enable WiFi Calling in Settings
  6. Test if WiFi Calling works

Note: You will need to reconnect to saved Wi-Fi networks after performing this reset.

If WiFi Calling still doesn't work, move to Step 8.

Step 8: Check for System Updates

Why this matters: System updates can include carrier configuration, modem, and connectivity fixes that may affect WiFi Calling.

  1. Settings → About phone → Check for updates
  2. Install any available updates
  3. Restart your phone and check if WiFi Calling works

If you're already on the latest version and WiFi Calling still doesn't work, contact Elisa or Xiaomi support.

Decision Box – What to Do Next?

Still not working? Let's narrow it down:

  • ✓ SIM has no WiFi Calling in another phone? → Contact Elisa (plan or provisioning issue).
  • ✓ SIM works elsewhere but not on your Xiaomi? → Device-specific issue (continue troubleshooting above).
  • ✓ WiFi Calling option is missing? → Check plan support, ROM version, or try the hidden diagnostic toggle (Step 4).
  • ✓ WiFi Calling works intermittently? → Check IMS registration (Step 5) and try another Wi-Fi network.
  • ✓ Calls drop when switching between Wi-Fi and mobile? → This may involve handover rather than basic activation; check IMS registration and contact Elisa.
  • ✓ Nothing works? → Contact Elisa to check account provisioning and device compatibility.

Contact Carrier (When Required)

Contact Elisa Finland if:

  • Your SIM has no WiFi Calling in other phones as well (plan or provisioning issue).
  • You've tried all steps above and WiFi Calling still doesn't work.
  • You need to verify that your plan includes WiFi Calling.
  • You need to check that your SIM and account are properly provisioned for WiFi Calling.

Elisa Support (Finland)

  • Elisa Help Centre: elisa.fi/asiakaspalvelu
  • Elisa WiFi Calling info: elisa.fi/wifipuhelu
  • Elisa App: OmaElisa (available on Google Play Store)
  • Check Elisa's official contact page for the latest support number and hours.

Contact Xiaomi Support if:

  • You've tried all steps above and WiFi Calling still doesn't work.
  • You've tested your SIM in another phone and it works normally.
  • You suspect a software or hardware issue with your device.

Xiaomi Support

Final Verdict

If your Xiaomi won't connect to WiFi Calling on Elisa Finland, follow this diagnostic flow:

  1. Start by checking eligibility – Elisa WiFi Calling is available for customers with a compatible phone and subscription. Prepaid plans may not support it.
  2. Test another Wi-Fi network – This isolates Wi-Fi-specific issues.
  3. Test your SIM in another phone – To determine if the issue is device-specific.
  4. Enable WiFi Calling in Settings – Use the primary method in SIM settings.
  5. Try the Xiaomi diagnostic code – *#*#869434#*#* toggles VoWiFi on supported devices.
  6. Check IMS status if available – *#*#4636#*#* can help diagnose registration.
  7. Reset network settings – As a last-resort device configuration step.
  8. Check for system updates – May contain modem or carrier fixes.

If none of these steps resolve the problem, contact Elisa to verify your account provisioning and device compatibility.

Frequently Asked Questions

Does Elisa Finland support WiFi Calling on Xiaomi?

Yes, Elisa Finland supports WiFi Calling on compatible Xiaomi devices. Elisa WiFi Calling (WiFi-puhelut) is available for customers with a compatible phone and subscription. However, support may vary by plan and device model. Prepaid plans may not support the service.

Why can't I find the WiFi Calling option on my Xiaomi?

If the option is missing, your plan may not support WiFi Calling, or your device may not have the feature enabled. Use the search function in Settings for "WiFi Calling", "WiFi-puhelut", "VoWiFi", or "Make calls using WLAN". You can also try the hidden diagnostic toggle *#*#869434#*#*. Devices with China ROM may not show the option even if the hardware supports it.

What is the Xiaomi VoWiFi diagnostic code?

*#*#869434#*#* toggles VoWiFi-related functionality on supported Xiaomi devices. It is a device-side diagnostic toggle, not an Elisa activation or account-provisioning code.

Why does WiFi Calling stop working after a few hours?

Intermittent WiFi Calling can be related to IMS registration, the Wi-Fi network, device software, or handover between Wi-Fi and mobile networks. Test another Wi-Fi network first. If the problem follows the SIM across compatible phones, contact Elisa to check provisioning.

How do I check IMS status on Xiaomi?

If available, dial *#*#4636#*#* in the Phone app, select Phone information, tap the three dots, and select IMS Service Status. Check if Voice over Wi-Fi shows as Available or Registered. The exact menu and available IMS information vary by model and software version.

Does WiFi Calling work on Elisa Prepaid?

WiFi Calling is typically not available on Elisa Prepaid plans. You may need a postpaid subscription to use the service.

What is the difference between WiFi Calling and VoWiFi?

WiFi Calling and VoWiFi (Voice over Wi-Fi) refer to the same feature – making calls over a Wi-Fi network instead of the mobile network.

Can I use Elisa WiFi Calling abroad?

Elisa WiFi Calling may allow you to make and receive calls over Wi-Fi when abroad, but billing and rates depend on your specific plan. Contact Elisa to confirm the applicable charges for WiFi Calling when outside Finland.

Note: This guide is updated for 2026. Menu names may vary slightly between HyperOS and MIUI versions. WiFi Calling availability depends on your specific Elisa plan and device model.

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