Xiaomi VoLTE Not Working on Telenor Denmark

Xiaomi VoLTE Not Working on Telenor Denmark (2026 Fix)

📌 Quick Answer – If Your Xiaomi VoLTE Isn't Working on Telenor Denmark:

  • ✓ Enable VoLTE in Settings – Go to Settings → SIM cards & mobile networks → Your Telenor SIM and toggle VoLTE or 4G Calling ON.
  • ✓ Check LTE availability – VoLTE requires a stable 4G/LTE connection. Check your network indicator.
  • ✓ Check your Xiaomi model and regional variant – Not all regional variants support Telenor's VoLTE profiles.
  • ✓ Try the Xiaomi diagnostic code – Dial *#*#86583#*#* in the Phone app to toggle the VoLTE carrier check on supported devices. This does not guarantee VoLTE will work.
  • ✓ Test your SIM in another phone – This is the quickest way to determine if the issue is your Xiaomi device or your SIM/plan.

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

If your Xiaomi, Redmi, or POCO phone drops to 2G/3G during calls, shows "Can't use VoLTE", or the VoLTE option is missing or greyed out on Telenor Denmark, this guide covers common troubleshooting steps. This issue is becoming increasingly important as Danish mobile operators modernise their networks and retire legacy technologies over time. A phone that cannot use supported voice technologies may have reduced calling compatibility as older networks are phased out.

Before You Start – Quick Checks

  • Check your device compatibility – Telenor supports VoLTE on compatible devices, but some imported Xiaomi variants (e.g., China or India models) may have limited compatibility.
  • Check your plan – VoLTE availability can depend on your subscription, SIM provisioning, and device compatibility.
  • Ensure 4G coverage – VoLTE requires a 4G network signal. Telenor's 4G network is widely available in Denmark.
  • Restart your phone – Clears temporary software glitches affecting IMS registration.

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 VoLTE issue:

  • Is the option missing entirely? – The VoLTE toggle does not appear in your SIM settings.
  • Is the option visible but calls drop to 2G/3G? – The toggle is on, but during calls the network indicator changes from 4G/5G to 2G/3G.
  • Does the phone have signal but no VoLTE? – The phone may still show 4G, but calls may not use VoLTE.
  • Did it work before? – Did this issue start after a system update, SIM swap, or traveling abroad?

Why This Happens

  • Device compatibility with Telenor – Telenor supports VoLTE on compatible devices, but some Xiaomi models or regional variants (e.g., India or China versions) may not be fully compatible.
  • IMS registration failure – VoLTE requires IMS (IP Multimedia Subsystem) registration. If IMS is not registered, VoLTE won't work.
  • Xiaomi carrier check – Xiaomi's VoLTE carrier check may block the feature, even when the network supports it.
  • Plan restrictions – Some subscriptions may not support VoLTE.
  • Software or configuration issues – Incorrect network settings or outdated system software can prevent VoLTE from working.

Quick Diagnostic Table

  • VoLTE option missing → Device compatibility, carrier provisioning, Xiaomi carrier check, or plan restrictions
  • Option visible but not working → IMS registration, network coverage, or software configuration
  • Works on other phones but not on Xiaomi → Xiaomi-specific carrier check or device compatibility
  • VoLTE works temporarily but turns off after reboot → Possible registration, carrier-configuration, or device software issue

Check Telenor VoLTE Support

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

  • Telenor VoLTE – Telenor Denmark launched VoLTE as the first operator in Denmark and continues to support it on compatible devices.
  • Plan restrictions – VoLTE availability can depend on your subscription, SIM provisioning, and device compatibility.
  • Device compatibility – Telenor supports VoLTE on compatible devices, but compatibility can vary by model and firmware version. Some Xiaomi models may require activating VoLTE using a diagnostic code.

Important: Carrier Check

  • If your Xiaomi model is not compatible with Telenor's VoLTE implementation, the feature may not work even if you enable it in settings.
  • Contact Telenor directly to confirm whether your specific device model and subscription are supported for 4G Calling (VoLTE).

Step 1: Enable VoLTE in Settings

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

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

If the option is not visible:

  • Your Xiaomi model may not support VoLTE on Telenor, or the VoLTE carrier check may be blocking it.
  • Try the hidden diagnostic code in Step 5.

If the option is enabled but VoLTE still doesn't work, move to Step 2.

Step 2: Refresh Network Registration

Why this matters: A quick network refresh can resolve temporary registration issues that may affect IMS and VoLTE.

  • Turn on Airplane Mode for 30 seconds.
  • Turn Airplane Mode off.
  • Wait for the phone to reconnect to Telenor's network.
  • Make a test call to check if VoLTE is active.

If VoLTE still doesn't work, move to Step 3.

Step 3: Confirm LTE Availability During a Call

Why this matters: VoLTE requires a stable 4G/LTE connection. Testing this directly can reveal whether VoLTE is active or if the phone is falling back to older networks.

  • Start a test call – Call a number while watching the network indicator.
  • Check the network indicator – If the phone remains connected to LTE/4G during the call instead of falling back to 2G or 3G, this is a strong practical sign that VoLTE is working. Network indicators can vary by device and carrier.
  • Test in an area with strong 4G/LTE coverage – Try a different location to rule out local coverage issues.

If VoLTE still doesn't work, move to Step 4.

Step 4: Check Device Compatibility

Why this matters: Not all Xiaomi devices support all of Telenor Denmark's network requirements for VoLTE. This is particularly important for imported China or India variants.

Check your device model:

  • European/Global variants – These variants may have better compatibility with European carrier profiles, but VoLTE availability still depends on the exact model, firmware, and carrier configuration.
  • Imported China or India variants – May not have the required VoLTE profiles for Telenor. Some imported models may use different modem firmware, carrier profiles, or supported frequency bands.
  • Check the exact model number – Do not rely only on the phone's marketing name. Xiaomi often sells different regional variants with different radio support.
  • If your device is an imported variant, VoLTE may not work reliably on Telenor Denmark.

If your device is a European/Global variant and VoLTE still doesn't work, move to Step 5.

Step 5: Check VoLTE with the Hidden Xiaomi Code

Why this matters: Xiaomi devices have a hidden diagnostic code that can toggle the VoLTE carrier check. On some Xiaomi devices, the carrier check can affect whether VoLTE settings are exposed. Disabling the check may make the option visible, but it does not guarantee that VoLTE will register or work with Telenor.

  1. Open the Phone app
  2. Dial *#*#86583#*#*
  3. If supported, the phone may display a message indicating that the VoLTE carrier check has been disabled.
  4. This may enable the VoLTE option if it was previously hidden.
  5. Restart your phone and check if VoLTE works

Note: This code toggles the carrier check on and off. Dialing it again will re-enable the check. The code may not work on all Xiaomi devices or ROM versions.

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

Step 6: 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 Telenor SIM into another phone that is known to support VoLTE on Telenor Denmark.
  • Check if VoLTE works on the other phone (look for 4G/LTE indicator during a call or a VoLTE symbol).
  • If VoLTE 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 VoLTE also doesn't work on the other phone, the problem is more likely related to your SIM, plan, or carrier provisioning – contact Telenor.

If the SIM works normally in another phone and VoLTE still doesn't work on your Xiaomi, move to Step 7.

Step 7: Check IMS Registration Status (If Available)

Why this matters: VoLTE requires IMS registration. The IMS status can reveal whether the phone is successfully registered for VoLTE on Telenor's network.

  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. If your device exposes an IMS status screen, check whether IMS and VoLTE-related services appear as registered, available, or enabled. The wording varies significantly by model and software version.

If IMS shows "Not available" or "Not registered":

  • Try toggling Airplane Mode on and off to re-register
  • Try toggling VoLTE off and on in Settings while on LTE
  • If IMS registration repeatedly fails, the cause may be related to carrier provisioning, device compatibility, SIM configuration, or the device's carrier profile.

Note: The IMS Service Status menu is not available on every Xiaomi model or HyperOS/MIUI version. If the menu is not available, proceed to Step 8.

If IMS registration fails, move to Step 8.

Step 8: 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 IMS registration.

  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. Wait a few minutes for the phone to reconnect to the network
  6. Re-enable VoLTE in Settings
  7. Check if VoLTE works

If VoLTE still doesn't work, move to Step 9.

Step 9: Check for System Updates

Why this matters: Software updates often include modem firmware and IMS improvements that can enable or improve VoLTE.

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

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

Decision Box – What to Do Next?

Still not working? Let's narrow it down:

  • ✓ SIM has no VoLTE in another phone? → Contact Telenor (plan or provisioning issue).
  • ✓ SIM works elsewhere but not on your Xiaomi? → The issue is more likely related to the Xiaomi device, its regional variant, firmware, or carrier configuration.
  • ✓ VoLTE option is missing? → Check device compatibility with Telenor, try the hidden diagnostic toggle (Step 5), or check if your device is an imported variant.
  • ✓ VoLTE works temporarily but is unavailable after reboot? → If VoLTE becomes available again after toggling Airplane Mode, the issue may involve network registration or carrier configuration. If the problem repeats, contact Telenor.
  • ✓ Nothing works? → Contact Telenor to check account provisioning and device compatibility.

Contact Carrier (When Required)

Contact Telenor Denmark if:

  • Your SIM has no VoLTE in other phones as well (plan or provisioning issue).
  • You've tried all steps above and VoLTE still doesn't work.
  • You need to verify that your plan includes 4G Calling (VoLTE).
  • You need to confirm whether your specific Xiaomi model and subscription are supported for VoLTE.

Telenor Support (Denmark)

  • Call 72 100 100. Check Telenor's official contact page for current opening hours.
  • Telenor Help Centre: telenor.dk/kundeservice
  • Telenor App: Mit Telenor (available on Google Play Store)

Contact Xiaomi Support if:

  • You've tried all steps above and VoLTE still doesn't work.
  • Telenor confirms that your subscription is provisioned correctly and your exact device variant should support VoLTE, but the feature still fails after basic troubleshooting.
  • You suspect a software or hardware issue with your device.

Xiaomi Support

Final Verdict

If your Xiaomi won't use VoLTE on Telenor Denmark, follow this diagnostic flow:

  1. Enable VoLTE in Settings – Turn on VoLTE or 4G Calling if the option is available.
  2. Refresh network registration – Toggle Airplane Mode on for 30 seconds, then off.
  3. Check LTE availability during a call – If the phone drops to a legacy network during calls, VoLTE is not active.
  4. Check device compatibility – Some imported Xiaomi variants may not have the required VoLTE profiles for Telenor.
  5. Try the Xiaomi diagnostic code – *#*#86583#*#* toggles the VoLTE carrier check on supported devices.
  6. Test your SIM in another compatible phone – to isolate SIM/account issues.
  7. Check IMS status if available – *#*#4636#*#* may provide diagnostic information on some devices.
  8. Reset network settings – As a last-resort device configuration step.
  9. Check for system updates – May contain modem or carrier fixes.

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

Frequently Asked Questions

Does Telenor Denmark support VoLTE on Xiaomi?

Telenor Denmark supports VoLTE on compatible devices. Telenor launched VoLTE as the first operator in Denmark and continues to support it on compatible devices. However, compatibility can depend on the device model and regional variant. Some imported Xiaomi variants may not have the required VoLTE profiles for Telenor.

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

If the option is missing, your Xiaomi model may not support VoLTE on Telenor, or the VoLTE carrier check may be blocking it. Try the hidden diagnostic code *#*#86583#*#* to toggle the carrier check.

What is the Xiaomi VoLTE carrier-check code?

*#*#86583#*#* toggles the VoLTE carrier check on supported Xiaomi devices. It can enable the VoLTE option if it was previously hidden. It does not activate VoLTE on your Telenor account.

How do I check if my phone is using VoLTE during a call?

One practical test is to make a call and check whether your phone remains connected to 4G/LTE or 5G rather than falling back to a legacy network. This can indicate that an IMS-based calling service is active, although the exact network indicator varies by phone and carrier configuration. The VoLTE icon itself is not always displayed, so the network remaining on LTE during the call can be a more useful practical check.

Why is VoLTE unavailable after I restart my Xiaomi?

This can be due to network registration timing or carrier settings reloading at startup. Toggle Airplane mode on/off after reboot to force the phone to re-register on the network. If the problem repeats, contact Telenor to check provisioning.

Do these fixes work on EU Xiaomi devices?

The general troubleshooting steps apply to Xiaomi, Redmi and POCO phones in Denmark and the EU, although menu names and available options can vary by model and software version.

Can imported Xiaomi devices use VoLTE on Telenor Denmark?

Imported devices (China or India variants) may not have the required VoLTE profiles for Telenor. Some imported models may use different modem firmware, carrier profiles, or supported frequency bands, which can affect IMS and VoLTE availability.

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

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