Why Is My APN Not Saving | UK Mobile Guide

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Solving 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

Publishing order: 493 • Cluster 43: Semantic Support

If your internet connection is slow or mobile data is not working properly, this Why Is My APN Not Saving | UK Mobile guide will help you configure everything correctly.

This guide covers configuration issues, data drops, weak signal and general settings.

Run through the basics first — they resolve most no-service, slow-data, hotspot, SIM-lock, roaming and APN problems.

Post-reboot, give re-registration time to complete before checking again.

Check that the SIM, data and roaming settings line up with the plan's actual terms.

Mobile internet settings can confirm whether the APN is missing or wrong.

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Troubleshooting checklist

Easy fixes lead the list; more involved ones follow further down

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

Correct your network APN values for internet and MMS (Why Is My APN Not Saving)

Review the APN entry under Mobile Network or Cellular Data, save, reboot, then verify browsing, picture messages and hotspot.

Internal guides to check next

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

Frequently Asked Questions About Why Is My APN Not Saving

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.