O2 APN Settings - United Kingdom Configuration 2026

Configure O2 mobile data settings on Android and iOS

Set up O2 APN settings to fix mobile internet and MMS issues in the UK. O2 requires the APN 'mobile.o2.co.uk' along with a username and password to authenticate on their network. Use this guide to manually configure your device for O2's 4G and 5G networks.

O2 APN Settings

Use these settings to configure your O2 mobile data connection.

SettingValue
APNmobile.o2.co.uk
MCC234
MNC10
AuthenticationPAP
APN Typedefault,supl,mms
Usernameo2web
Passwordpassword

How to Configure O2 APN on Android

  1. 1 Navigate to Settings > Connections > Mobile networks > Access Point Names.
  2. 2 Add a new APN.
  3. 3 Name it 'O2 Internet'.
  4. 4 Enter 'mobile.o2.co.uk' for the APN.
  5. 5 Enter 'o2web' for Username and 'password' for Password.
  6. 6 Fill in MMSC, MMS Proxy, and Port for picture messaging.
  7. 7 Save and select the O2 Internet profile.

How to Configure O2 APN on iPhone/iOS

  1. 1 Go to Settings > Mobile Data > Mobile Data Network.
  2. 2 Enter 'mobile.o2.co.uk' in the APN fields.
  3. 3 Enter 'o2web' for Username and 'password' for Password.
  4. 4 Restart your device to activate the settings.

Troubleshooting

Common issues and solutions when configuring O2 APN settings.

Data works but MMS fails
O2 MMS requires the exact MMSC URL (http://mmsc.mms.o2.co.uk:8002) and Proxy (82.132.254.1). Double check for typos.
Slow internet speed
Ensure you are using the 'mobile.o2.co.uk' APN. Older APNs like 'payandgo.o2.co.uk' may still work but offer slower speeds.
Authentication error
Verify Authentication Type is set to 'PAP' and that you have entered the username 'o2web' and password 'password' correctly.

O2 APN Settings FAQ

What are the O2 APN settings for Pay Monthly?

The APN 'mobile.o2.co.uk' works for both Pay Monthly and Pay As You Go customers on modern 4G/5G plans.

What is the O2 username and password for APN?

Username: 'o2web', Password: 'password'. These are required fields for O2 configuration.

How do I manual roam on O2?

If roaming isn't working, check that 'Data Roaming' is enabled in settings. The APN settings usually remain the same, but ensure your plan covers the destination country.

Why can't I edit my O2 APN?

Some phones lock the APN settings when a major carrier SIM is inserted. If you can't edit, try adding a new APN instead.

What are the MCC and MNC for O2 UK?

O2 UK uses MCC 234 and MNC 10. These values are typically pre-programmed on your SIM card and should not be changed unless they are incorrect.