SMARTY APN Settings

Set up SMARTY APN settings to fix mobile internet and MMS issues on your device. SMARTY uses the APN 'mob.asm.net' with no username or password required. SMARTY is a sub-brand of Three UK that operates on Three's 4G and 5G network (MCC 234, MNC 20), offering SIM-only plans with no contract commitments.

Use these settings to configure your SMARTY mobile data connection.

Setting	Value
APN	`mob.asm.net`
MCC	`234`
MNC	`20`
Authentication	None
APN Type	`default,supl,mms`
APN Protocol	IPv4/IPv6
Username	Not required
Password	Not required

How to Configure SMARTY APN on Android

1 Open Settings on your Android device
2 Go to Network & Internet or Connections
3 Tap Mobile Network or Mobile Data
4 Select Access Point Names (APN)
5 Tap the + icon or Menu to add a new APN
6 Set Name to 'SMARTY Internet' and APN to 'mob.asm.net'
7 Leave Username and Password blank
8 Set MMSC to 'http://mms.um.three.co.uk:10021/mmsc'
9 Set MMS Proxy to 'mms.three.co.uk' and MMS Port to '8799'
10 Tap Save and select the new SMARTY APN from the list

How to Configure SMARTY APN on iPhone/iOS

1 Open Settings on your iPhone
2 Tap Cellular or Mobile Data
3 Select Cellular Data Options
4 Tap Cellular Network or APN Settings
5 Enter 'mob.asm.net' for APN
6 Leave Username and Password blank
7 Restart your iPhone to apply changes

Troubleshooting

Common issues and solutions when configuring SMARTY APN settings.

MMS messages fail on SMARTY: SMARTY uses Three's MMS infrastructure with MMSC URL http://mms.um.three.co.uk:10021/mmsc, proxy mms.three.co.uk, and port 8799. These values are the same as Three's MMS settings. Ensure all three are entered correctly in your APN profile.
No data connection on SMARTY: Verify the APN is 'mob.asm.net' and not the Three APN 'three.co.uk'. SMARTY has its own dedicated APN even though it runs on Three's network. No username or password is needed. Restart your device after saving the settings.
SMARTY APN not appearing after SIM insert: Some devices may not auto-detect SMARTY settings. Manually create a new APN with the value 'mob.asm.net'. Set MCC to 234 and MNC to 20. If settings keep disappearing, check that these network codes match your SIM card values.

SMARTY APN Settings FAQ

What is the APN for SMARTY?

The APN for SMARTY is 'mob.asm.net'. No username or password is required. SMARTY uses a different APN from its parent network Three, which uses 'three.co.uk'. The 'asm' in the APN stands for the technical platform SMARTY uses. Using Three's APN on a SMARTY SIM will not work correctly.

Is SMARTY the same as Three?

SMARTY is a sub-brand of Three UK that uses the same 4G and 5G network infrastructure. Both share MCC 234 and MNC 20, and SMARTY uses Three's MMS servers. However, SMARTY has its own unique APN 'mob.asm.net' instead of Three's 'three.co.uk'. SMARTY focuses on simple SIM-only plans with no long-term contracts.

What are the SMARTY MMS settings?

SMARTY MMS settings use Three's MMS infrastructure with MMSC URL http://mms.um.three.co.uk:10021/mmsc, MMS Proxy mms.three.co.uk, and MMS Port 8799. These are the same MMS server settings used by Three. Without these values, internet browsing works but picture messages will not send or receive.

Does SMARTY need a username and password?

No, SMARTY does not require a username or password for its APN settings. Leave both fields completely blank when configuring the APN on your device. The authentication type should be set to None. This is the same as Three, which also does not require authentication credentials for its APN.

Can I use Three APN settings on SMARTY?

No, Three's APN 'three.co.uk' will not work correctly on a SMARTY SIM card. You must use SMARTY's dedicated APN 'mob.asm.net' for proper data connectivity. While the MMS settings are identical between SMARTY and Three, the data APN must match the specific brand of your SIM card.