How to open APN settings on Samsung Galaxy (O2)
| 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 — Access Point Name — tells the phone how to reach O2 for internet, MMS and hotspot. An incorrect one leaves the SIM connected but unable to browse or send MMS.
Here are O2's recommended APN values across Android and iPhone — name, username, password, MMSC, MMS proxy, port. When data connects but nothing loads, start with these.
Entering O2 APN values on Samsung Galaxy
Current Android builds put O2's APN list under Settings → Network & Internet → Mobile Network → Access Point Names (Samsung: Connections). Plus icon for new, tap for existing.
Samsung: Settings → Connections → Mobile Networks → Access Point Names. Xiaomi and Redmi differ, using Settings → SIM cards & Mobile Networks → Access Point Names.
Troubleshooting checklist
Getting to O2's APN settings on Android, field by field
APN settings greyed out on Samsung Galaxy (O2)
With iOS 16 or later, check Settings → Mobile Data → Mobile Data Network. If it doesn't show, O2 is configuring the APN for you. A network settings reset (Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings) puts O2's defaults back.
Certain new iPhones lock the APN field via O2's carrier bundle; O2 support must push a profile update.
Troubleshooting checklist
The iPhone route to O2's APN screen, and why certain fields can't be edited
Testing your O2 connection after saving APN (O2 APN Settings Samsung Galaxy)
Enter each O2 value below on the APN screen, skipping anything not shown. After saving, restart and choose the new profile.
Troubleshooting checklist
O2's APN settings on Android, walked through field by field
Troubleshooting O2 APN issues (Samsung Galaxy)
No data despite correct O2 APN values? Work through these:
1. Aeroplane mode first. Ten seconds on, then off, prompting the phone to reconnect to O2 and re-register the APN profile.
2. Power the handset right down and back up — this resolves short-lived faults and activates the O2 profile.
3. Start the APN from scratch — remove the entry and retype every value, since a stray character stops data working.
4. Reset networking to defaults — Android through Settings → General Management → Reset → Reset Network Settings, iPhone through Settings → General → Reset → Reset Network Settings. Saved pairings are lost; O2's defaults return.
5. Confirm nothing's wrong account-side: SIM activated, account active, allowance not exhausted. The O2 hub or customer services can tell you.
Troubleshooting checklist
For O2, working through these in order usually resolves things early on
• 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 Galaxy)
O2 handles MMS through distinct APN fields: MMSC, MMS proxy and MMS port. Sending or download problems usually start there, and some Android phones require a dedicated MMS APN alongside the internet one.
MMS setup checklist
Keep O2's MMSC on http:// — an accidental https:// stops MMS from working at all
Frequently Asked Questions About O2 APN Settings Samsung Galaxy
Will changing APN settings delete anything?
No, the rest of the phone is unaffected. This setting only handles the O2 connection for internet and MMS, and resetting to defaults is always possible.
Do I need to enter APN settings on an eSIM?
eSIM profiles from O2 generally include the right APN automatically. If mobile data is dead regardless, enter the values manually as described above.
Why is my O2 APN greyed out?
Depending on device and SIM type, O2 may lock APN editing. Android users should look for reset APNs in Settings → Network & Internet → Mobile Network; iPhone users need O2 to update the carrier bundle.