TRY THIS FOR THE 2GO MANUAL CONFIGURATION.

Settings Name = MTN MMS
Home page = http://10.199.212.8/servlets/mms
Proxies = Enable
Primary Proxy = 10.199.212.2
Port = 8080
Session Mode = Permanent
Data bearer = GPRS

For bearer settings, use the settings that was used to setup GPRS for phone
GPRS Access Point = web.gprs.mtnnigeria.net
IP Address = 10.199.212.2
Authentication type = Normal
User name = web
Password = web