Which O2 APN profile gives fastest data speeds?
| Setting | Value |
|---|---|
| APN Name | mobile.o2.co.uk |
| Username | vertigo |
| Password | password |
| MMSC | http://mmsc.mms.o2.co.uk:8002 |
| MMS Proxy | 82.132.254.1 |
| MMS Port | 8080 |
| Authentication Type | PAP |
| APN Type | default,supl,mms |
The APN is the configuration string a phone uses to talk to O2's network for data, MMS and hotspot — wrong values mean signal without working internet.
O2's suggested APN values for Android and iPhone follow — covering name, username, password, MMSC, MMS proxy and port. Mobile data connected with no internet points straight at the APN.
Comparing O2 APN settings for different use cases
The path on modern Android is Settings → Network & Internet → Mobile Network → Access Point Names, or Connections on Samsung devices. Use plus to create, tap to edit.
On Samsung it's Settings → Connections → Mobile Networks → Access Point Names; Xiaomi and Redmi phones use Settings → SIM cards & Mobile Networks → Access Point Names instead.
Troubleshooting checklist
Navigating to O2's APN list on Android, values explained
Optimising your O2 APN for 4G and 5G
iOS 16 or newer: Settings → Mobile Data → Mobile Data Network. No such option generally means O2 supplies the APN automatically. To restore O2 defaults, use Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings.
On some recent iPhones, O2's carrier bundle disables APN editing — an O2-side carrier settings update is the only fix.
Troubleshooting checklist
Getting to O2's APN settings on iPhone, plus an explanation of greyed-out fields
When to use O2 internet APN vs MMS APN
Type these values into the O2 APN screen and leave unlisted fields empty. Save, reboot, then pick the new profile.
Troubleshooting checklist
Finding the O2 APN list on Android, with each value explained
Troubleshooting O2 APN issues (fast-internet setups)
APN correct on O2 but nothing loading? Run through these in order:
1. Flip aeroplane mode on and off after roughly ten seconds — enough to force a fresh O2 connection and APN re-registration.
2. Restart the handset completely, clearing transient faults and applying the new APN.
3. Delete the profile and rebuild it. One wrong character in the O2 APN name or MMSC is enough to break data entirely.
4. Wipe the network settings. Android: Settings → General Management → Reset → Reset Network Settings. iPhone: Settings → General → Reset → Reset Network Settings. This clears saved Wi-Fi and Bluetooth, restoring O2's default APN.
5. An account problem is worth ruling out. Check SIM activation, account status and data usage through the O2 hub or customer services.
Troubleshooting checklist
Move to the next step if one doesn't help — they're meant to be tried in order
• 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 (fast-internet setups)
O2's MMS runs through its own fields inside the APN profile — MMSC, MMS proxy and MMS port. If picture messages won't send or download, check those first. Some Android phones need a dedicated MMS APN entry apart from the main internet one.
MMS setup checklist
O2's MMSC needs entering character for character — http:// only, never https://
Frequently Asked Questions About Best O2 APN Settings for Fast Internet
Will changing APN settings delete anything?
Nothing else is affected. APN settings purely determine how the handset reaches O2 for data and picture messaging, and they're reversible.
Do I need to enter APN settings on an eSIM?
Normally the O2 eSIM brings its own correct APN configuration. Should data fail anyway, the manual steps above will set it.
Why is my O2 APN greyed out?
The APN field arrives locked on some O2 devices and SIM types. Android has a reset-APNs option under Settings → Network & Internet → Mobile Network; on iPhone the carrier bundle rules, meaning O2 must push the change.