This guide will show you how to set up MMS manually on your Windows Phone. NOTICE: SCREEN IMAGES MAY DIFFER FROM YOUR ACTUAL DEVICE.
MMS problems should be solved at this point. Please continue the guide if you still cannot send/receive MMS.
Gamma
three.co.uk
Note: Only the values that are highlighted in yellow should be changed.
mms.three.co.uk
8799
http://mms.um.three.co.uk:10021/mmsc
Your phone has now been set up to MMS.