Three Call Forwarding Code on Samsung Galaxy
What this means: Three Call Forwarding Code on Samsung Galaxy means this feature is not working correctly. Follow the steps below to diagnose and fix the issue on your Samsung Galaxy with Three.
- Dial the forward code followed by your voicemail/target number
- Confirm format: **21*[number]# for unconditional forwarding
- Check forwarding is not already active — dial ##21# to clear
- Contact carrier if codes fail — some require account-level activation
ℹ️ About Three — Call Forwarding Code
Three operates on the Three (own network). Three's Feel At Home roaming covers 71 destinations. iD Mobile and SMARTY also use Three's network.
Known Samsung Galaxy considerations: 5G coverage mainly in city centres. eSIM supports dual-SIM on compatible devices.
- Support number: 333 (from your Three SIM)
- Support page: https://www.three.co.uk/support
- Network status: Check Three network status
Three Call Forwarding Codes for Samsung Galaxy
Check device settings
Go to Settings → Connections → Mobile networks and verify all settings are correct.
Toggle Airplane mode
Enable Airplane mode for 30 seconds then disable — resets network connection.
Restart device
Power off completely, wait 10 seconds, power back on.
Reinsert SIM
Remove and reinsert the SIM card to refresh network registration.
Check APN settings
Go to Settings → Connections → Mobile networks → Access Point Names and confirm APN is set to three.co.uk.
Reset network settings
Go to Settings → General management → Reset → Reset network settings to clear corrupt network configuration.
Update software
Go to Settings → Software update and install any pending updates.
Contact Three
Call Three on 333 if issue persists after all steps above.
⚡ Three APN Settings Reference
| Setting | Value |
|---|---|
| APN | three.co.uk |
| Username | (leave blank) |
| Password | (leave blank) |
| MMSC | http://mms.um.three.co.uk:10021/mmsc |
| Three Support | 333 |
Frequently Asked Questions
What is the best way to fix Call Forwarding Code on Samsung Galaxy?
Start by toggling Airplane mode, then restarting the device. If that doesn't work, check the APN at Settings → Connections → Mobile networks → Access Point Names — confirm it is set to three.co.uk. If still failing, reset network settings and contact Three on 333.
Do I need to contact Three to fix this?
Most Call Forwarding Code issues on Samsung Galaxy can be resolved by following the steps above without contacting Three. If the problem persists after all steps, call Three on 333 — they can check for account-level or network-side issues.
Will a network reset help with Three on Samsung Galaxy?
Yes — a network reset at Settings → General management → Reset → Reset network settings clears corrupted APN settings and network configurations. Remember to note your Wi-Fi passwords first as they will be cleared. Re-enter the Three APN (value: three.co.uk) after the reset.
📞 When to Call Three
If all steps above have not resolved the issue, call Three on 333 (free from Three). Ask them to check data provisioning, account status, and any local network events.