I seem to be unable to send or receive MMS messages.
I get a message telling me I have an MMS but when I hit 'download' it just sits there 'downloading' forever.
SMS works fine, internet works fine.

APN Settings:-
Name: 3
APN: three.co.uk
Proxy: mms.three.co.uk
Port: 8799
Username: <Not set>
Password: <Not set>
Server: mms.um.three.co.uk:10021/mmsc
MMSC: mms.um.three.co.uk:10021/mmsc
MMS proxy: mms.three.co.uk
MMS port: 8799
MCC: 234
MNC: 20
APN type: <Not set>