Hi again John,
The IEMI is a PITA to enter and is always 15 numercial digits long. Did you dial *#06# rather than try and read the printed numbers ?
I'm not sure if any of the settings have become corrupted but maybe make sure you have the correct APN settings for and data and mms - taken from the excellent sticky post by teabag APN-settings
It's basically the same info listed for all mobiles phones that would be sent to your phone, even though your mobile is no longer shown in the lists.
Internet & MMS APN.
Name: WEB
APN: goto.virginmobile.uk
MMSC: http://mms.virginmobile.co.uk:8002
MMS proxy: 193.30.166.2
MMS port: 8080
MCC: 234
MNC: 38
Authentication type: CHAP
APN type: *
APN Protocol: IPv4
APN Roaming Protocol: IPv4
Leave all other options blank/Not set
Dave
The Service you do for others is the rent you pay for your room here on Earth - Muhammad Ali