I can not get the mms to work on my new Nokia 6600 for O2 UK.
I have tried the Nokia site settings and various other sites even spoke to O2'dont know much about new phones' customer services at 50p a minute and went through them step by step with conflicting settings to the Nokia site!

I've also tried settings for 3650 but it shows a setting for default gateway which the 6600 doesn't have!

Does anyone know the complete settings for O2 MMS?

Visit the following link and Nokia will send them to you...

http://www.nokia.co.uk/nokia/0,,41887,00.html

...Good luck with MMS on O2, 75% of messages sent never arrive for me, plus GPRS connection availability and reliability is poor.

I am in the same situation as you nadman.

I can GPRS WAP no probs but I cannot get the POP3 email working and the GPRS internet connection working.

Like you i found the Gateway IP address bit missing in my 6600 ( i got the settings for the 7650) even in the advanced settings there is no space for the gateway IP address.

When you use GPRS 'Net you dont need a gateway IP, just your DNS servers and (on the 6600 only) a proxy server address. The settings are on this forum already a couple of times.