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O2 APN Settings Samsung

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Exact O2 APN settings for Samsung — internet, MMS and data values. Step-by-step setup guide for Samsung UK, updated 2026.

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Finding APN settings on Samsung (O2 APN Settings Samsung)

Setting Value
APN Namemobile.o2.co.uk
Usernamevertigo
Passwordpassword
MMSChttp://mmsc.mms.o2.co.uk:8002
MMS Proxy82.132.254.1
MMS Port8080
Authentication TypePAP
APN Typedefault,supl,mms

APN stands for Access Point Name — the configuration a phone relies on to reach O2's network for internet data, MMS and hotspot. Without it set correctly, the SIM can connect yet still fail to load pages or send picture messages.

Below are O2's recommended APN values for both Android and iPhone — APN name, username, password, MMSC, MMS proxy and port. A 'connected but no internet' state usually means the APN needs checking.

Entering O2 APN values on Samsung

On Android 10 and up, get to O2's APN list via Settings, Network & Internet (or Connections on Samsung), Mobile Network, then Access Point Names — the plus icon adds a profile, tapping an existing one edits it.

Samsung Galaxy: Settings → Connections → Mobile Networks → Access Point Names for O2. Xiaomi and Redmi route through Settings → SIM cards & Mobile Networks → Access Point Names.

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Troubleshooting checklist

Android's menu path to the O2 APN screen and its required values

Step 1Check APNStep 2Select APNStep 3Toggle flight modeStep 4Restart phoneStep 5Test data
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Saving an APN does not activate it — you must select it
On Android, after tapping Save the new APN appears in the list but is not yet active. Tap the radio button (empty circle) next to it so it becomes filled. The profile is only active when the circle is filled. Then toggle aeroplane mode or restart.

Samsung APN field locked or greyed out (O2 APN Settings Samsung)

iOS 16 and up keeps it at Settings → Mobile Data → Mobile Data Network. Missing? O2 probably configures the APN automatically. Resetting via Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings brings back O2's defaults.

Some newer iPhones running O2's carrier bundle grey the APN field out entirely — O2 support has to push a carrier settings update.

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Troubleshooting checklist

Getting to the O2 APN screen on iPhone, and why some fields show greyed out

Step 1Check APNStep 2Select APNStep 3Toggle flight modeStep 4Restart phoneStep 5Test data
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APN field greyed out? Here is why
On Android: the field is locked by a carrier profile. Go to Settings → Network & Internet → Mobile Network → Access Point Names and tap Reset to Default (three-dot menu). On iPhone: the carrier bundle controls the APN — it cannot be edited manually. Contact your network to push an updated carrier profile, or insert the SIM in another phone to test.
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APN values are case-sensitive — enter them exactly
Type every character exactly as shown — no spaces before or after, no capital letters unless listed. One wrong character stops mobile data from working. After saving on Android, tap the radio button (filled circle) next to the new profile to activate it.

Testing your O2 connection after saving APN (O2 APN Settings Samsung)

Enter O2's values on the APN screen and leave unlisted fields empty, then save, restart and select the profile.

After saving your APN settings, always restart your phone and test a website before making further changes. If you have multiple APN profiles, make sure the correct one is selected (shown with a filled circle on Android).
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Troubleshooting checklist

The Android menu route to O2's APN screen, values included

Step 1Check APNStep 2Select APNStep 3Toggle flight modeStep 4Restart phoneStep 5Test data
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Fastest way to apply new APN settings
After saving, turn aeroplane mode ON for 10 seconds, then turn it OFF. This forces an immediate network re-registration — quicker than a full restart and equally effective.

Troubleshooting O2 APN issues (Samsung)

Data still not working after entering O2's APN values? Try these in sequence:

1. Cycle aeroplane mode for about ten seconds. The phone reconnects to O2 and re-registers its APN profile.

2. Give it a complete restart. That flushes temporary network glitches and locks in the O2 settings.

3. Rebuild the profile. Delete the O2 APN entry entirely and re-type it — a single wrong character in the name or MMSC field breaks data.

4. Do a full network settings reset — Android via Settings → General Management → Reset → Reset Network Settings, iPhone via Settings → General → Reset → Reset Network Settings. Wi-Fi and Bluetooth pairings are wiped, but O2's defaults come back.

5. Rule out an account issue: is the SIM activated, the account in good standing, and the allowance intact? The O2 hub or customer services will confirm.

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Troubleshooting checklist

On O2, the fix is usually found in the first step or two

Step 1Check APNStep 2Select APNStep 3Toggle flight modeStep 4Restart phoneStep 5Test data
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Common MMS mistakes that stop picture messages working
• The MMSC URL must begin with http:// — never https://
• The MMS Proxy field is an IP address only — no http:// prefix
• APN Type must contain mms (e.g. default,supl,mms)
• On Android, save then select the profile before testing

APN settings for MMS on O2 (Samsung)

Picture messaging on O2 uses its own fields inside the APN profile: MMSC, MMS proxy and MMS port. When MMS fails to send or download, start there. Some Android handsets require a dedicated MMS APN separate from the main one.

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MMS setup checklist

Type O2's MMSC field exactly as shown — it's http://, and swapping in https:// breaks picture messaging outright

Step 1Check MMSCStep 2Add MMS proxyStep 3Set APN typeStep 4Turn data onStep 5Send test MMS

Frequently Asked Questions About O2 APN Settings Samsung

Will changing APN settings delete anything?

No — contacts, messages and apps stay completely untouched. This setting only controls how the phone reaches O2 for data and MMS, and defaults can always be restored.

Do I need to enter APN settings on an eSIM?

An O2 eSIM profile usually brings correct APN settings automatically. If data still isn't working, entering them manually via the steps above may be needed.

Why is my O2 APN greyed out?

O2 locks the APN field on certain handsets and SIM types. Android users can check Settings → Network & Internet → Mobile Network for an option to reset APNs; on iPhone the carrier bundle is in charge, so O2 has to push the update.

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APN field greyed out? Here is why
On Android: the field is locked by a carrier profile. Go to Settings → Network & Internet → Mobile Network → Access Point Names and tap Reset to Default (three-dot menu). On iPhone: the carrier bundle controls the APN — it cannot be edited manually. Contact your network to push an updated carrier profile, or insert the SIM in another phone to test.

More O2 APN Settings Samsung Questions

What is the O2 APN name?
The O2 APN name is shown in the settings table above. On most O2 SIMs in the UK, the APN is pre-configured automatically when you insert your SIM.
Why is my O2 mobile data not working after entering the APN?
After entering the O2 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 O2 plan includes mobile data.
Do I need to enter APN settings manually on O2?
Most O2 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 the O2 MMS APN for picture messages?
The O2 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 O2?
Yes, the O2 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.

Related guides

O2 APN SettingsO2 APN Settings iPhoneO2 APN Settings AndroidO2 MMS SettingsO2 eSIM SetupO2 APN Settings for RoamingO2 APN Settings Not WorkingO2 5G APN Settings

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