Xiaomi Mobile Data Not Working on Telekom Germany

Xiaomi Mobile Data Not Working on Telekom Germany – Fix

If your Xiaomi, Redmi, or POCO device connects to Telekom's network but mobile data doesn't work—while calls and SMS may still function—this guide explains why and how to fix it.

Quick Answer:
Mobile data issues on Telekom Germany are usually caused by temporary network glitches, APN configuration problems, SIM provisioning issues, or 5G Standalone compatibility on some Xiaomi devices. Start by checking your APN is set to internet.telekom. If 5G+ (5G SA) is causing problems, try disabling it in the Telekom customer portal or switching to 4G only. If the issue persists, restart your phone or test your SIM in another device.

Why This Happens

Several factors can cause mobile data problems on Telekom Germany with Xiaomi devices:

  • Incorrect APN settings – Incorrect APN settings can prevent mobile data from working. Telekom usually configures APN settings automatically, but they can become incorrect after a factory reset, ROM change, or manual edits.
  • 5G Standalone (5G+) compatibility issues – Telekom's 5G SA network can cause connectivity problems on some Xiaomi devices. Disabling 5G+ typically restores stability.
  • Weak signal or network congestion – Data speeds and connectivity depend on location and network conditions.
  • Data allowance exhaustion – If you're using prepaid, check that you still have available data.
  • SIM issues – Faulty or outdated SIM cards can cause connectivity problems. Some users have reported that converting to an eSIM resolved network issues on Telekom.
  • Temporary network glitches – Restarting the phone or toggling Airplane mode often resolves these.

Check Telekom Network Status

Before troubleshooting your phone, check if there's a network issue in your area:

  • Check Telekom's coverage map at telekom.de/netz.
  • Check if there are known outages in your area. Telekom occasionally performs network modernisation work that can affect service.

If another Telekom customer nearby is also having issues, the problem is likely network-related.

Check Your Data Balance

Before troubleshooting your phone, check whether you've used all your data allowance:

  • Open the MeinMagenta app or log in at telekom.de.
  • If your data is exhausted, mobile data will stop working. If you're using prepaid, check that you still have available data.

Test Your SIM in Another Phone

This quick test helps determine whether the issue is with your Xiaomi or your Telekom SIM:

  • Insert your Telekom SIM into another phone.
  • If mobile data works on the other phone, the issue is likely with your Xiaomi.
  • If mobile data also fails on the other phone, the issue is likely with your Telekom account, SIM, or network coverage.
  • If another Telekom SIM also fails in your Xiaomi, the issue is likely device-related.

Quick Fixes to Test First

Try these quick actions in order. Check if mobile data works after each step.

1. Toggle Airplane Mode

Switching Airplane mode on and off forces your phone to disconnect and reconnect to nearby towers. This can resolve temporary network glitches.

  1. Swipe down to open Quick Settings.
  2. Enable Airplane mode.
  3. Wait 30 seconds.
  4. Disable Airplane mode.
  5. Test mobile data.

2. Restart Your Xiaomi

Restarting clears temporary software glitches and refreshes network connections.

  1. Hold the Power button.
  2. Select Restart.
  3. Wait for the phone to fully boot.
  4. Test mobile data.

3. Check Mobile Data is Enabled

Ensure mobile data is turned on in your phone settings.

  1. Settings → SIM cards & mobile networks → [Telekom] SIM.
  2. Ensure Mobile data is toggled ON.
  3. Settings → Network & internet → Data Saver → Ensure it's OFF.

Battery Saver may restrict background data on some Xiaomi devices, but it rarely prevents mobile data from working entirely. Temporarily disabling it for testing can help rule out any restrictions.

APN Configuration Check – Telekom Germany

Incorrect APN settings can prevent mobile data from working. Telekom usually configures APN settings automatically, but they can become incorrect after a factory reset, ROM change, or manual edits. Manually verifying them can help if settings were changed or reset.

Telekom Official APN Settings

Setting Value
Name Telekom Internet (or any name)
APN internet.telekom
Username telekom (if required)
Password tm (if required)
Proxy Not set / Leave blank
Port Not set / Leave blank
MCC 262
MNC (Leave as default)
Authentication type PAP or CHAP
APN type default,supl
APN protocol IPv4/IPv6
APN roaming protocol IPv4

Leave all unspecified fields at their default values. If your phone connects successfully without entering a username and password, leave them blank.

To verify or update your APN:

  1. Settings → SIM cards & mobile networks → [Telekom] SIM → Access Point Names.
  2. Select the active APN or tap the + icon to create a new one.
  3. Enter the values from the table above exactly.
  4. Save and select the APN. If the new APN isn't selected after saving, tap it manually so the radio button becomes active before testing.
  5. Toggle Airplane mode ON for 30 seconds, then OFF.
  6. Restart your phone to activate the settings.

Note: Some users have reported that using APN internet.v6.telekom works better for newer devices supporting IPv6, but internet.telekom is the standard recommended APN.

5G+ (5G Standalone) Issues on Xiaomi

Telekom's 5G Standalone network can cause connectivity problems on some Xiaomi devices. Some Xiaomi users, including reports from Xiaomi 13T Pro users, have reported that 5G+ causes connection drops, handover issues, and instability.

Signs of 5G+ issues:

  • Mobile data works but disconnects regularly.
  • Connection drops when switching between Wi-Fi and mobile data.
  • 5G signal disappears and doesn't return until toggling Airplane mode.

What to do:

  1. Disable 5G+ – Log in to the Telekom customer portal and deactivate 5G+ (5G Standalone).
  2. Switch to 4G only – Settings → SIM cards & mobile networks → [Telekom] SIM → Preferred network type → Select 4G (LTE) only.
  3. Test stability – If the problem stops, the issue is 5G+ related. You can keep 4G enabled until Telekom's 5G SA network becomes more stable in your area.

Some users have also reported that converting from a physical SIM to an eSIM on Telekom resolved network issues.

Using Dual SIM?

If you're using two SIM cards:

  • Make sure Telekom is selected as the mobile data SIM.
  • Try temporarily disabling the second SIM.
  • If available, toggle Preferred Data Switching off.
  • Restart the phone and test mobile data again.

Travelling Near Borders?

If you're travelling near the German border, your phone may connect to a foreign network. Ensure Data Roaming is enabled if your plan supports it:

  1. Settings → SIM cards & mobile networks → [Telekom] SIM.
  2. Toggle Data Roaming ON if needed.

Check Preferred Network Type

If 5G+ (5G SA) is causing issues, switching to 4G only can restore stability.

  1. Settings → SIM cards & mobile networks → [Telekom] SIM.
  2. Tap Preferred network type.
  3. Try switching between options (e.g., 5G/4G/3G/2G auto, 4G only).
  4. Wait 30 seconds after each change.

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. Re-enter your Telekom APN settings if required.
  5. Note: You'll need to reconnect to Wi-Fi networks afterwards.

Contact Telekom

Contact Telekom if:

  • Mobile data issues persist after completing all steps above.
  • Your SIM works fine in another phone but not in your Xiaomi.
  • You suspect a network provisioning issue with your account.
  • You've used all your data and need to top up.

What to ask Telekom: Ask Telekom to verify that your SIM is correctly provisioned for mobile data services, confirm your account is not barred, and check whether there are any local network issues in your area.

How to contact Telekom:

  • Call Telekom customer service
  • Visit a Telekom store
  • Use the MeinMagenta app

Final Verdict

If calls and SMS work normally but only mobile data fails, the issue is usually configuration-related rather than a hardware fault. In most cases, mobile data issues on Telekom Germany with Xiaomi devices are caused by temporary network glitches, APN configuration problems, SIM provisioning issues, or 5G Standalone compatibility on some Xiaomi devices. Start by verifying your APN is set to internet.telekom. If you're experiencing drops on 5G+, try disabling 5G+ in the Telekom customer portal or switching to 4G only. If the issue persists, test your SIM in another phone or contact Telekom to verify your account provisioning.

Frequently Asked Questions

What APN should I use for Telekom Germany on Xiaomi?
The correct APN for Telekom Germany is internet.telekom. Username and password are only required if your device specifically asks for them.

Why does my Xiaomi mobile data keep disconnecting on Telekom?
This is often caused by 5G Standalone (5G+) issues on Telekom. Some Xiaomi users, including reports from Xiaomi 13T Pro users, have reported that 5G+ causes connection drops and instability. Try disabling 5G+ in the Telekom customer portal or switching to 4G only.

Does Telekom 5G+ work on Xiaomi?
It works on many Xiaomi devices, but some users have reported stability issues with 5G+ enabled. While devices like the Xiaomi 13T Pro support all required 5G SA bands, some users have reported instability with 5G+ enabled.

Why does my Xiaomi show 5G but no internet on Telekom?
If your phone shows 5G but data doesn't work, the issue may be with your APN settings or 5G+ connectivity. Check your APN is set correctly and try switching to 4G only. If the problem persists, contact Telekom.

Can an eSIM fix Telekom data issues on Xiaomi?
Some users have reported that converting from a physical SIM to an eSIM on Telekom resolved network connectivity issues, including poor signal and data problems.

Why does my Telekom data stop working near the border?
If you're near the German border, your phone may connect to a foreign network. Ensure Data Roaming is enabled if your plan supports it.

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