Proceed to http://mms.vipnet.hr/servlets/mms for MMS retrieval.
If you need the MMS gateway setting, refer below:
VIPNet mms.vipnet.hr. 188.8.131.52 http://mms.vipnet.hr/servlets/mms
Quoted from Wikipedia:
Since its arrival, VIPnet has broken the monopoly of CRONET (since renamed to T-Mobile Hrvatska, and owned by Hrvatski Telekom) and introduced many new services unknown before – SMS, prepaid and others. At that time the penetration rate in Croatia was just 4.6%, and by the end of March 2008 it reached 117%.
Today VIPnet is still best known for its mobile network. It is a 900 MHz GSM and 2100 MHz 3G (WCDMA) network which supports GPRS,MMS, EDGE, UMTS and HSDPA technologies. They were the first to introduce a number of these technologies to the Croatian market and remain a technological leader in the field.
VIPnet has 2.5 million customers as of end of 2008, up 14.1% compared to end of 2007. Its market share is 42.2%, down from 43% share at the end of 2007