Xiaomi 5G Not Working on 3 Denmark

Xiaomi 5G Not Working on 3 Denmark (2026 Fix)

If your Xiaomi, Redmi, or POCO phone only shows 4G/LTE on 3 Denmark, the first thing to determine is whether the problem follows the SIM or stays with the phone. Test the 3 SIM in another 5G phone at the same location. If 5G works there, focus on your Xiaomi's network settings, regional variant, supported 5G bands, and software. If it doesn't, check your 3 plan, SIM, coverage, or account provisioning.

Diagnose the Issue First

Before making changes, determine the pattern of your 5G issue:

• No 5G at all? – Does the phone only show 4G/LTE, even in areas with known 5G coverage? Check 3's coverage map for your exact location.
• 5G drops or switches to 4G? – Does the connection frequently switch between 4G and 5G? This can happen when moving between different coverage areas or when the phone struggles with band switching.
• Location-specific? – Does 5G work in some areas but not others? 5G availability varies by location, and building materials can block signals indoors.
• Does your plan include 5G? – Check your plan details before troubleshooting device settings.
• Test your SIM in another 5G-capable phone – This is the quickest way to identify if the issue is your Xiaomi device, your SIM, or the network.

Why This Happens

• 5G coverage limitations – 5G availability varies by location. 3 currently covers 99% of the Danish population with 5G, but local variations exist.
• Preferred network type misconfiguration – If your phone is configured to use LTE/4G only, or a network mode that excludes 5G, it will not connect to 5G.
• Device compatibility – Not all Xiaomi devices support all of 3 Denmark's 5G bands. Imported China or India variants may lack key bands used by 3.
• Plan or account provisioning – Your plan may not include 5G access, or your account may not be properly provisioned for 5G.
• Software or configuration issues – System updates or incorrect settings can affect 5G connectivity.

Check 5G Coverage (3 Denmark)

Before troubleshooting your device, verify 3's 5G coverage:

• Check 3's coverage map – 3 currently covers 99% of the Danish population with 5G, but coverage can vary by exact location.
• Important note: 3's 5G network is available nationwide, but actual coverage can vary by location and local conditions.
• Check 3's network status page for any current outages or maintenance in your area.
• If there is a confirmed outage or maintenance, 5G may be restored automatically within a few hours.

Step 1: Test SIM in Another Phone

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

• Insert your 3 SIM into another 5G-capable phone that is known to work on 3 Denmark.
• Check if 5G works on the other phone in the same location.
• If 5G 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 5G also doesn't work on the other phone, the problem is more likely related to the SIM, plan, network, or local coverage conditions – contact 3.

Step 2: Check Preferred Network Type

Why this matters: If your phone is configured to use LTE/4G only, or a network mode that excludes 5G, it will not connect to 5G.

• Settings → SIM cards & mobile networks
• Tap your 3 SIM
• Tap Preferred network type
• Select the network mode that automatically uses 5G and 4G/LTE when available. Menu names vary by Xiaomi model and HyperOS version. Look for options like "5G/4G Auto" or "5G/4G/3G/2G Auto".
• Avoid selecting "5G only" – this can cause the phone to lose signal entirely outside 5G coverage.
• Wait 30 seconds and check if 5G appears in the status bar.

Note: Menu names may vary slightly between HyperOS and MIUI versions. Look for options containing "5G" or "NR" (New Radio).

If 5G still doesn't appear, move to Step 3.

Step 3: Check Device Compatibility

Why this matters: Not all Xiaomi devices support all of 3 Denmark's 5G bands. This is particularly important for imported China or India variants.

3 Denmark's 5G bands: One important compatibility check is whether your Xiaomi supports the 3.5 GHz (n78) band used by 3 Denmark. Imported variants can have different 5G band combinations, so check the exact model and regional variant before assuming the phone is compatible.

Check your device model:

• European/Global variants – Generally support 3's 5G bands. For example, the Xiaomi Redmi Note 11S 5G Global variant supports n78 (3500 MHz) and other 5G bands used in Denmark.
• Imported China or India variants – May have limited 5G band support. Check your device's specifications to confirm which bands it supports.
• Check your device's specifications – Look up your exact model on the manufacturer's website or use apps like Network Cell Info to see which bands your device supports.

Important: If your device does not support the 5G bands used at your location, it may fall back to 4G instead of connecting to 5G.

If your device is a European/Global variant and 5G still doesn't work, move to Step 4.

Step 4: Check for System Updates

Why this matters: Software updates often include modem firmware and carrier configuration improvements that can enable or improve 5G connectivity.

1. Settings → About phone → Check for updates
2. Install any available updates
3. Restart your phone and check if 5G works

If you're already on the latest version and 5G still doesn't work, move to Step 5.

Step 5: 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 5G connectivity.

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. Give the phone a few minutes to reconnect to the network
6. Check if 5G appears

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

If 5G still doesn't work, move to Step 6.

Step 6: Check APN Settings (Only if 5G Shows but Data Fails)

Why this matters: Incorrect APN settings can affect mobile data connectivity. This step is only relevant if your phone shows a 5G connection but mobile data does not work. If 5G never appears, skip this step.

Before manually changing anything:

• Do not change the APN unless it is missing or clearly incorrect.
• Start by resetting APNs to the carrier defaults.

3 Denmark APN settings commonly used for mobile data:

Note: APN settings are mainly relevant when 5G is connected but mobile data does not work correctly. They are usually not the reason a compatible phone cannot register on 5G.

1. Settings → SIM cards & mobile networks → Access Point Names
2. Tap the menu icon (three dots) and select Reset to default
3. If that doesn't work, manually create a new APN with the settings above
4. Restart your phone and check if 5G works

Important note: Some Xiaomi devices may have issues saving APN settings. If you experience problems, contact 3 for the correct APN settings.

If 5G still doesn't work, contact 3 or Xiaomi support.

Decision Box – What to Do Next?

Contact Carrier (When Required)

Contact 3 Denmark if:

• Your SIM has no 5G in other 5G-capable phones as well (network or account issue).
• You've tried all steps above and 5G still doesn't work.
• You need to verify that your plan includes 5G access.
• You need to check that your SIM and account are properly provisioned for 5G.

Contact Xiaomi Support if:

• You've tried all steps above and 5G still doesn't work.
• You've tested your SIM in another phone and it works normally.
• Your device is a European/Global variant but 5G should be supported.
• You suspect a hardware fault with the 5G antenna or modem.

Final Verdict

If your Xiaomi won't connect to 5G on 3 Denmark, start by testing your SIM in another 5G-capable phone – this is the quickest way to determine if the issue is your device, your plan, or the network. If the SIM works normally elsewhere, check that 5G is enabled in your preferred network settings and avoid selecting "5G only". One important compatibility check is whether your Xiaomi supports the 3.5 GHz (n78) band used by 3 Denmark – imported variants can have different 5G band combinations. If the issue persists, reset network settings and check for system updates. APN settings are only relevant if 5G shows but mobile data fails. Contact 3 to verify your account provisioning and to check for any local network conditions.

Frequently Asked Questions