These are the settings for an android powered phone for T-Mobile in Hungary. However the link at the end of this post could help with a lot more countries and mobile operators.

Android settings for T-Mobile (Hungary):

Name: T-Mobile H
APN: internet
Proxy: 212.051.126.002
Port: 8080
Username: <Not set>
Password: <Not set>
Server: <Not set>
MMSC: http://mms.t-mobile.hu/servlets/mms
MMS Proxy: 212.051.126.010
MMS Port: 8080
MCC: 216
MNC: 30
APN type: <Not set>

Every setting above is available from your network operator (in Hungary the T-Mobile website contains a lot of documents about how to set up various phones to use in their network. If your operator has them too, just look at the settings of a fairly recent 3G capable phone for this information).

The only thing you won’t find is the setting for MCC and MNC (these are Mobile Country Code and Mobile Network Code) these two values are unique for every country and every operator (MCC: 216 for Hungary, MNC: 30 for T-Mobile in Hungary [01 for Pannon, 70 for Vodafone]).

But there is a really good list on Wikipedia: Mobile Network Code