if anyone interested, this talks about the same problem as the WP7 had and still got
Nokia Support Discussions - Lumia 900 MMS Settings (Where is Network Pofile Ap... - Page 31 - Nokia Support Discussions
still no network setup app for unlocked phones
Nokia Support Discussions - Lumia 900 MMS Settings (Where is Network Pofile Ap... - Page 31 - Nokia Support Discussions
still no network setup app for unlocked phones