Xiaomi VoLTE Not Working on DNA Finland

Xiaomi VoLTE Not Working on DNA Finland (2026 Fix)

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

  • ✓ Enable VoLTE in Settings: Settings → SIM cards & mobile networks → Your SIM → toggle Use VoLTE ON.
  • ✓ Try the Xiaomi code: Dial *#*#86583#*#* to toggle the VoLTE carrier check on supported devices.
  • ✓ Ensure LTE/4G is enabled: Settings → SIM cards & mobile networks → Preferred network type → select a mode that includes LTE/4G.
  • ✓ Check your plan: DNA offers 4G calling (VoLTE) for compatible devices and subscriptions. Support can vary by provider, including MVNOs.
  • ✓ Test your SIM in another phone – to isolate device vs. plan or provisioning issues.

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 DNA Finland, this guide covers common troubleshooting steps. This issue can affect both 4G and 5G connections, and is particularly important now as Finland's 3G networks have been fully shut down.

Before You Start – Quick Checks

  • Check your device compatibility – DNA supports VoLTE on most modern 4G/5G devices. However, some imported Xiaomi variants (e.g., China or India models) may have limited compatibility.
  • Check your plan – DNA offers 4G calling (VoLTE) for compatible devices and subscriptions. Support can vary by provider, including MVNOs.
  • Ensure LTE/4G access is available – VoLTE normally relies on the carrier's IMS voice configuration and LTE access. Make sure your selected network mode allows the phone to connect to LTE/4G.
  • Toggle Airplane Mode – Turn on briefly, then off to refresh network registration.
  • 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 DNA – DNA supports VoLTE on compatible 4G/5G devices. However, 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 – DNA offers 4G calling (VoLTE) for compatible devices and subscriptions. Support can vary by provider, including MVNOs.
  • Software or configuration issues – Incorrect network settings or outdated system software can prevent VoLTE from working.
  • 3G shutdown – Finland's 3G networks have been shut down. VoLTE is required for reliable calling on 4G/5G networks.

Quick Diagnostic Table

  • VoLTE option missing → Device compatibility, carrier provisioning, Xiaomi carrier check, or plan/provider support
  • 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 is unavailable after reboot → Possible registration, carrier-configuration, or device software issue

Check DNA VoLTE Support

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

  • DNA VoLTE (4G-puhelut) – DNA offers 4G calling (VoLTE) for compatible devices and subscriptions.
  • MVNO plans – VoLTE support can vary between providers, including MVNOs that use another operator's network. Check your provider's current service information.
  • 3G shutdown – Finland's 3G networks are now shut down. VoLTE is necessary for calls on 4G/5G networks.
  • Device compatibility list – DNA supports VoLTE on most modern 4G/5G devices, but compatibility can vary by model and firmware version.

Important: Carrier Check

  • If your Xiaomi model is not on DNA's compatibility list for VoLTE, the feature may not work even if you enable it in settings.
  • Contact DNA directly to confirm whether your specific device model is supported for 4G-puhelut.

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 DNA SIM into another phone that supports VoLTE.
  • Make a test call and check whether the phone falls back to a legacy network. The exact VoLTE or IMS status indicator varies by device.
  • 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 DNA.

Step 2: Enable VoLTE in Settings

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

  • Settings → SIM cards & mobile networks
  • Tap your DNA 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 DNA, or the VoLTE carrier check may be blocking it.
  • Try the hidden diagnostic code in Step 3.

If the option is enabled but VoLTE still doesn't work, move to Step 3.

Step 3: Check VoLTE with the Hidden Xiaomi Code

Why this matters: Xiaomi devices have a hidden diagnostic code that can toggle the VoLTE carrier check. In some cases, this check blocks VoLTE even when the network supports it.

  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 4.

Step 4: Check Preferred Network Mode

Why this matters: Your phone must be able to use the carrier's supported IMS voice configuration. Make sure the selected network mode includes LTE/4G.

  • Settings → SIM cards & mobile networks
  • Tap your DNA SIM
  • Tap Preferred network type
  • Make sure your phone is allowed to connect to LTE/4G. Depending on your Xiaomi model, choose a preferred network mode that includes LTE or 4G. Examples may include:
    • 5G/4G/3G/2G (Auto)
    • Prefer 5G
    • Prefer 4G
    • LTE/3G/2G
  • Avoid forcing the phone into 2G-only or another mode that prevents LTE connectivity.
  • Wait 30 seconds and check if VoLTE works.

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

Step 5: Check IMS Registration Status (If Available)

Why this matters: The IMS status can provide diagnostic information about whether the phone is registered for IMS voice services, although the available information varies by device and software version.

  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 the menu is available and shows IMS or VoLTE as unavailable or not registered, this can indicate a registration or provisioning problem, but the diagnostic menu alone does not identify the exact cause.

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.

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 6.

If IMS registration fails, move to Step 6.

Step 6: 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 7.

Step 7: 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 DNA 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 DNA (plan or provisioning issue).
  • ✓ SIM works elsewhere but not on your Xiaomi? → Device-specific issue (continue troubleshooting above).
  • ✓ VoLTE option is missing? → Check device compatibility with DNA, try the hidden diagnostic toggle (Step 3), or check if your device is an imported variant.
  • ✓ VoLTE is unavailable after reboot? → Toggle Airplane mode once after reboot. If VoLTE returns, the issue may be related to network registration or carrier/device configuration.
  • ✓ Nothing works? → Contact DNA to check account provisioning and device compatibility.

Contact Carrier (When Required)

Contact DNA Finland 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-puhelut.
  • You need to check whether your Xiaomi model is on DNA's VoLTE compatibility list.

DNA Support (Finland)

  • DNA Help Centre: dna.fi/kundservice
  • DNA App: DNA Omia (available on Google Play Store)
  • Check DNA's official contact page for the latest support number and hours.

Contact Xiaomi Support if:

  • You've tried all steps above and VoLTE still doesn't work.
  • You've tested your SIM in another phone and it works normally.
  • Your device is a European/Global variant but VoLTE still fails.
  • You suspect a software or hardware issue with your device.

Xiaomi Support

Final Verdict

If your Xiaomi won't use VoLTE on DNA Finland, follow this diagnostic flow:

  1. Test your SIM in another compatible phone – This helps separate a device issue from a SIM, plan, or provisioning problem.
  2. Check your plan and device compatibility – Confirm that your provider and exact Xiaomi variant support the required IMS voice service.
  3. Enable VoLTE in Settings – Turn on VoLTE or 4G Calling if the option is available.
  4. Check the Xiaomi carrier-check toggle – Try *#*#86583#*#* on supported devices.
  5. Make sure LTE/4G is included in the network mode – You do not necessarily need to disable 5G.
  6. Check IMS status if available – *#*#4636#*#* may provide diagnostic information on some devices.
  7. Reset network settings – If the configuration appears corrupted.
  8. Install available system updates – Updates can include connectivity, modem, or carrier-related fixes.

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

Frequently Asked Questions

Does DNA Finland support VoLTE on Xiaomi?

DNA offers 4G calling (VoLTE) for compatible devices and subscriptions. DNA offers 4G calling (VoLTE) for compatible devices and subscriptions. Support can vary by provider, including MVNOs, and may depend on the device model and regional variant.

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

If the option is missing, your Xiaomi model may not support VoLTE on DNA, 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 DNA account.

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

During a call, check whether the phone falls back to a legacy network. If it remains on the carrier's supported LTE/5G voice configuration, VoLTE or IMS voice may be active. The exact status icon varies by Xiaomi model and software version.

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.

Do these fixes work on EU Xiaomi devices?

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

Can imported Xiaomi devices use VoLTE on DNA?

Imported devices (China or India variants) may not have the required VoLTE profiles for DNA. Some imported models may use different modem firmware, carrier profiles, or supported frequency bands. Missing LTE bands can affect coverage, while missing carrier configuration can affect IMS and VoLTE availability.

Is 3G still available on DNA Finland?

No. DNA shut down its 3G network completely between October 2023 and January 2024. VoLTE is required for reliable calling on 4G/5G networks.

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

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