What Are APN Settings | UK Mobile Guide

Diagnosing your network APN settings do and when you need them

Step	Action	What It Fixes
1	Check your network status	Confirms if issue is network-wide
2	Toggle aeroplane mode on/off	Re-registers SIM on your network
3	Restart your phone	Clears temporary network errors
4	Check your network APN settings	Fixes incorrect data configuration
5	Re-insert SIM card	Fixes poor SIM contact issues
6	Contact your network support	Resolves account or SIM faults

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If your internet connection is slow or mobile data is not working properly, this What Are APN Settings | UK Mobile guide will help you configure everything correctly.

For a UK phone acting up, configuration, signal and data issues are covered here.

This What Are APN Settings guide explains the common causes, the safest settings to check, and the simple fixes to try first. It is written for UK mobile network users who need a fast internet setup, correct SIM settings, roaming settings, cellular data, MMS settings and reliable 4G or 5G service.

Most no-service, slow-data, hotspot, SIM-lock, roaming or APN cases are covered by the basics below.

Let re-registration finish post-reboot before running another test.

Make sure the SIM's active status pairs with cellular data and roaming being on, per the plan.

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Troubleshooting checklist

These follow a deliberate order — keep going if one doesn't fix it

Step 1Check APNStep 2Select APNStep 3Toggle flight modeStep 4Restart phoneStep 5Test data

Correct your network APN values for internet and MMS (What Are APN Settings)

Check the APN within Mobile Network or Cellular Data settings, save, reboot, and confirm browsing, MMS and hotspot function.

Internal guides to check next

UK APN Settings Troubleshooting Why Is My Mobile Data Not Working How to Reset APN Settings APN Settings Explained What Is eSIM and How It Works How Roaming Works Back to full blog order

Frequently Asked Questions About What Are APN Settings

What is your network APN name?

Your network APN name is shown in the settings table above. On most your network SIMs in the UK, the APN is pre-configured automatically when you insert your SIM.

Why is my your network mobile data not working after entering the APN?

After entering your network APN settings, restart your phone to apply the changes. If data still does not work, check you have selected the correct APN and that your network plan includes mobile data.

Do I need to enter APN settings manually on your network?

Most your network devices configure APN settings automatically when you insert your SIM. You only need to enter them manually if your internet or MMS stops working after a factory reset or SIM swap.

What is your network MMS APN for picture messages?

Your network MMS APN settings are included in the table above. Make sure the MMSC, MMS Proxy and MMS Port values are entered exactly as shown.

Can I use the same APN settings for 4G and 5G on your network?

Yes, your network APN settings work for both 4G and 5G connections. You do not need a separate APN for 5G — the network upgrades automatically where 5G coverage is available.