im also using tmo usa and it works perfect...sending and reciving.. ive even been lucky enough to get and view short vids.... using latest version to my knowledge...1.3.4. i experienced not being able to see version there once and just uninstalled and reinstalled and that seemed to do the trick... also i did have lots of issues getting to work.....the trick for me was uninstalling....doing a purge after..the reinstalling and following the wiki closely. theres a point where it says connect as polite using internet connections by selecting mms from the list..so connect there and send and recieve to yourself. if it works...go into fmms setgs and change to havoc... that worked for me try it.