Samsung's APN settings location (Three)
| Setting | Value |
|---|---|
| APN Name | 3internet |
| Username | (leave blank) |
| Password | (leave blank) |
| MMSC | http://mms.um.three.co.uk:10021/mmsc |
| MMS Proxy | 193.113.200.195 |
| MMS Port | 8799 |
| Authentication Type | None |
| APN Type | default,supl,mms |
APN — Access Point Name — is the string a phone uses to reach Three for data, MMS and hotspot. Wrong values leave the SIM connected but unable to load pages.
Below are Three's recommended APN values for Android and iPhone — name, username, password, MMSC, MMS proxy and port. A 'connected but no internet' state points at the APN.
Entering Three APN values on Samsung — Three APN Settings Samsung
On Android 10 and up, Three's APN screen sits at Settings → Network & Internet (Connections on Samsung) → Mobile Network → Access Point Names. Plus icon adds a profile; tap an entry to edit.
Galaxy handsets: Settings → Connections → Mobile Networks → Access Point Names. Xiaomi and Redmi use Settings → SIM cards & Mobile Networks → Access Point Names.
Troubleshooting checklist
Finding the Three APN screen on Android, and which values go where
Greyed-out APN on Samsung (Three)
On iOS 16 or later: Settings → Mobile Data → Mobile Data Network. If absent, Three likely pushes the APN automatically. A reset restores Three's defaults.
Newer iPhones on Three's carrier bundle may grey out the APN field — contact Three for a settings update.
Troubleshooting checklist
iPhone's APN settings location, plus greyed-out fields explained
Testing your Three connection after saving APN — Three APN Settings Samsung
Type Three's values into the APN screen, leaving unlisted fields blank. Save, restart, then select the profile.
Troubleshooting checklist
The Android path to Three's APN screen and its values
Troubleshooting Three APN issues (Samsung)
Still no data after entering Three's APN values? Work through these in order:
1. Toggle aeroplane mode — ten seconds on, then off — forcing a Three reconnect and APN re-registration.
2. Restart fully — this clears short-lived faults and applies the new Three values.
3. Rebuild the APN. Delete Three's entry and retype it — one wrong character breaks data.
4. Reset all network settings. Android: Settings → General Management → Reset → Reset Network Settings. iPhone: Settings → General → Reset → Reset Network Settings. Three's defaults return.
5. Check the Three account — SIM activation, standing and data allowance are all verifiable via the hub or customer services.
Troubleshooting checklist
On Three, most people are back online after the first couple of steps here
• 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 Three (Samsung)
Three's MMS uses dedicated APN fields — MMSC, MMS proxy and MMS port. Check those first when picture messages fail.
MMS setup checklist
The MMSC field needs http://, not https:// — a frequent typo that kills MMS entirely
Frequently Asked Questions About Three APN Settings Samsung
Will changing APN settings delete anything?
No. Contacts, messages and apps stay as they are — the APN only sets how the phone reaches the network, and it's reversible.
Do I need to enter APN settings on an eSIM?
A Three eSIM profile usually brings correct APN settings automatically. If data fails, enter them manually via the steps above.
Why is my Three APN greyed out?
Three locks the APN field on some devices and SIM types. Greyed out on Android? Look for reset APNs under Settings → Network & Internet → Mobile Network. On iPhone the carrier bundle controls it — ask Three for an update.